• 185 questions

Part 135 Regulations Practice Test with a Printable Key Facts Sheet

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What flight time does section 135.265(a) allow a scheduled-operations pilot in one calendar month?

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Key facts sheet: Part 135 limits by subpart made to print

Part 135 regulations: key facts by subpart

Each row is a limit copied from 14 CFR part 135 with its section, read in the eCFR text dated September 29, 2026. Unofficial study sheet. It is not an operator's manual or operations specifications, and the rule text itself governs.

Subpart A: general

  • Report after an emergency deviation Within 10 days, not counting Saturdays, Sundays and Federal holidays (135.19(c))
  • Copy of the manual At least one copy at the principal base of operations (135.21(b))
  • Exclusive use At least one aircraft that meets the requirements for at least one kind of authorized operation (135.25(b))

Subpart B: flight operations

  • Records kept Aircraft list at least 6 months. Pilot and flight attendant records at least 12 months (135.63(b))
  • Load manifest Multiengine aircraft, in duplicate, before each takeoff (135.63(c))
  • Pilot oxygen, unpressurized Continuous use above 12,000 feet MSL, and from above 10,000 feet once more than 30 minutes are spent there (135.89(a))
  • Pilot oxygen, pressurized Above 35,000 feet MSL at least one pilot at the controls wears a mask. Above 25,000 feet MSL, if one pilot leaves, the other puts on a mask (135.89(b))
  • Autopilot enroute Not below 500 feet, or twice the AFM altitude loss, or an altitude the Administrator specifies, whichever is greater (135.93(c))
  • Second in command by seats Required with a passenger seating configuration of ten seats or more (135.99(b))
  • Critical phases of flight Taxi, takeoff and landing, and all other flight below 10,000 feet except cruise flight (135.100(c))
  • Autopilot in place of a second in command Commuter pilot in command needs at least 100 hours as pilot in command in the make and model (135.105(a))
  • Flight attendant Required with a passenger seating configuration of more than 19 (135.107)
  • Oxygen briefing Passengers are briefed on oxygen if the flight involves operations above 12,000 feet MSL (135.117(a)(7))

Subpart C: aircraft and equipment

  • Cockpit voice recorder Multiengine turbine-powered, six or more passenger seats, two pilots required (135.151(a))
  • Terrain awareness and warning Turbine-powered airplane: Class A with 10 or more passenger seats, at least Class B with 6 to 9 (135.154)
  • Passenger oxygen, unpressurized Above 10,000 through 15,000 feet MSL: 10 percent of occupants for the part of the flight longer than 30 minutes. Above 15,000 feet MSL: each occupant (135.157(a))
  • Passenger oxygen, pressurized Above 25,000 feet MSL: at least a 10-minute supply for each occupant other than the pilots (135.157(b)(1))
  • Single-engine IFR standby power 150 percent of the emergency electrical load for at least one hour (135.163(f)(2))
  • Shoulder harness Turbojet aircraft, or 10 or more passenger seats: one at each flight crewmember station (135.171(a))
  • Traffic alert and collision avoidance Turbine powered airplane with 10 to 30 passenger seats (135.180(a))
  • One engine inoperative climb At least 50 feet a minute at the MEAs or 5,000 feet MSL, whichever is higher (135.181(a)(2))
  • Weighing Multiengine aircraft: actual weighing within the preceding 36 calendar months (135.185(a))

Subpart D: VFR and IFR limits and weather

  • VFR minimum altitude, airplane Day: 500 feet above the surface and 500 feet horizontally from any obstacle. Night: 1,000 feet above the highest obstacle within 5 miles, 2,000 feet in designated mountainous terrain (135.203(a))
  • VFR minimum altitude, helicopter 300 feet above the surface over a congested area (135.203(b))
  • VFR visibility, airplane Uncontrolled airspace with a ceiling under 1,000 feet: at least 2 miles (135.205(a))
  • VFR fuel Airplane: 30 minutes by day, 45 minutes at night. Helicopter: 20 minutes (135.209)
  • Takeoff alternate Within 1 hour's flying time at normal cruising speed in still air (135.217)
  • IFR fuel Destination, then alternate, then 45 minutes at normal cruising speed. Helicopters 30 minutes (135.223(a))
  • No alternate fuel needed Ceiling at least 1,500 feet above the lowest circling MDA and visibility at least three miles, or two miles above the lowest minimum, from one hour before to one hour after arrival (135.223(b))
  • Pretakeoff contamination check Completed within 5 minutes prior to beginning takeoff (135.227(b)(1))

Subpart E: flight crewmember requirements

  • Pilot in command, VFR 500 hours as a pilot, with 100 hours cross-country, 25 of them at night (135.243(b)(2))
  • Pilot in command, IFR 1,200 hours as a pilot, with 500 cross country, 100 night and 75 instrument, 50 of those in actual flight (135.243(c)(2))
  • Commuter operating experience Single engine 10 hours. Multiengine reciprocating 15. Multiengine turbine 20. Turbojet 25 (135.244(a))
  • Recent experience Three takeoffs and three landings in the preceding 90 days. Night period: 1 hour after sunset to 1 hour before sunrise (135.247(a))

Subpart F: flight time limits and rest

  • Scheduled operations 1,200 hours a calendar year, 120 a calendar month, 34 in 7 consecutive days (135.265(a))
  • Scheduled rest 9 hours for under 8 hours of scheduled flight time, 10 for 8 to under 9, 11 for 9 or more (135.265(b))
  • Unscheduled one- and two-pilot crews 500 hours a calendar quarter, 800 in two consecutive quarters, 1,400 a calendar year (135.267(a))
  • Unscheduled daily flight time 8 hours for one pilot, 10 hours for two pilots, in any 24 consecutive hours (135.267(b))
  • Unscheduled rest At least 10 consecutive hours in the 24 hours before planned completion. 13 rest periods of 24 hours each calendar quarter (135.267(d) and (f))
  • Rest after exceeding the daily limit Over by up to 30 minutes: 11 hours. By 30 to 60 minutes: 12 hours. By more than 60 minutes: 16 hours (135.267(e))

Subpart G: crewmember testing

  • Knowledge test Written or oral, since the beginning of the 12th calendar month before service (135.293(a))
  • Instrument proficiency check Pilot in command under IFR: since the beginning of the 6th calendar month before service (135.297(a))
  • Line check Since the beginning of the 12th calendar month: at least one flight over one route segment (135.299(a))
  • Grace month A test or check done in the calendar month before or after the due month counts as done in the due month (135.301(a))

Subpart H: training

  • Initial and recurrent training Since the beginning of the 12th calendar month before service. Not for a holder that uses only one pilot (135.343)
  • Recurrent flight training A section 135.293 check within the preceding 12 calendar months may be substituted (135.351(c))

Subpart I: airplane performance

  • Destination landing distance Large transport category, turbine engine powered: full stop within 60 percent of the effective runway length, from 50 feet (135.385(b))
  • Alternate landing distance 70 percent for turbo-propeller-powered airplanes, 60 percent for turbojets. Eligible on-demand operators 80 percent (135.387)

Subpart J: maintenance

  • Which maintenance rules Nine passenger seats or less: parts 91 and 43. Ten seats or more: a maintenance program (135.411(a))
  • Mechanical interruption summary Before the end of the 10th day of the following month, multiengine aircraft (135.417)
  • Single engine IFR oil analysis Each 100 hour interval or the manufacturer's interval, whichever is more frequent (135.421(c)(2))

Subpart K: hazardous materials training

  • Recurrent training Every 24 months (135.501(b)(3))
  • New hire Up to 30 days under direct visual supervision before initial training is complete (135.505(b))
  • Training records Training of the preceding three years, kept while the person does the job and 90 days after (135.507(a))

Subpart L: helicopter air ambulance

  • Local flying area Not more than 50 nautical miles in any direction. Pilot examination within the 12 calendar months before use (135.609(b) and (c))
  • IFR to VFR transition Missed approach point 3 NM or less from the landing area: 600-foot ceiling with 2 statute miles by day, 3 at night (135.613(a)(2))
  • VFR obstacle clearance 300 feet by day, 500 feet at night (135.615(b))
  • Operations control center Required with 10 or more helicopter air ambulances on the operations specifications (135.619(a))
  • Medical personnel training Within the preceding 24 calendar months: at least 4 hours of ground training and 4 hours in and around the helicopter (135.621(b))

Source: 14 CFR part 135 at https://www.ecfr.gov/current/title-14/part-135 , eCFR text dated 2026-09-29, read 2026-10-04. Checked October 4, 2026.

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All 185 questions

General (Subpart A) 9

  • A flight crewmember holds a crewmember certificate issued under section 135.43 for international operations. When must it be surrendered for cancellation? 14 CFR § 135.43(b)
  • A pilot in command deviates from a Part 135 rule to meet an emergency. How soon must the report of that deviation be sent to the responsible Flight Standards office? 14 CFR § 135.19(c)
  • Apart from the exception in paragraph (d), what registration does section 135.25(a) require of an aircraft operated under Part 135? 14 CFR § 135.25(a)
  • How many aircraft must a Part 135 certificate holder have the exclusive use of? 14 CFR § 135.25(b)
  • In an emergency involving the safety of persons or property, which Part 135 rules may the pilot in command deviate from? 14 CFR § 135.19(b)
  • Section 135.19(a) lets the certificate holder itself deviate in an emergency. From which Part 135 rules? 14 CFR § 135.19(a)
  • Under section 135.21(c), a certificate holder's manual must not be contrary to which of these? 14 CFR § 135.21(c)
  • Where must a Part 135 certificate holder keep at least one copy of its manual? 14 CFR § 135.21(b)
  • Which certificate holder is left out of the general Part 135 requirement to prepare and keep current a manual? 14 CFR § 135.21(a)
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Flight operations (Subpart B) 37

  • A certificate holder with an approved certificate verification plan gives a pilot a temporary document in place of an airman certificate. For how long may it be carried on flights within the United States? 14 CFR § 135.95(b)
  • A child on a Part 135 flight may be held by an adult in an approved seat instead of having a separate seat and belt. Until what age? 14 CFR § 135.128(a)
  • A commuter operation uses an approved autopilot in place of a second in command. How much pilot in command time in the make and model must the pilot in command have? 14 CFR § 135.105(a)
  • A mechanical irregularity comes to the pilot in command's attention during flight time. What does section 135.65(b) require? 14 CFR § 135.65(b)
  • A passenger flight will operate above 12,000 feet MSL. What must the oral briefing before takeoff then cover, under section 135.117(a)(7)? 14 CFR § 135.117(a)
  • A pilot in command learns of airport conditions that are a hazard to safe operations. What does section 135.69(a) require? 14 CFR § 135.69(a)
  • A pressurized aircraft is above 25,000 feet MSL and one pilot leaves the pilot duty station. What must the remaining pilot at the controls do? 14 CFR § 135.89(b)
  • Above which altitude must at least one pilot at the controls of a pressurized aircraft wear an oxygen mask, secured and sealed, whatever kind of mask the aircraft has? 14 CFR § 135.89(b)
  • Above which altitude must each pilot of an unpressurized aircraft use oxygen continuously, however short the time? 14 CFR § 135.89(a)
  • Above which passenger seating configuration, excluding any pilot seat, must a flight attendant crewmember be on board? 14 CFR § 135.107
  • An aircraft carries passengers under IFR. Unless the exception in section 135.105 applies, what does section 135.101 require? 14 CFR § 135.101
  • An FAA inspector on an inspection presents an Aviation Safety Inspector credential, FAA Form 110A, to the pilot in command. What must the inspector be given? 14 CFR § 135.75(a)
  • An unpressurized aircraft cruises at 11,000 feet MSL. After how long at that altitude must each pilot use oxygen continuously? 14 CFR § 135.89(a)
  • Before beginning a flight, what must the pilot in command determine under section 135.71? 14 CFR § 135.71
  • Before each flight, what must the pilot in command determine about the maintenance log, if the pilot does not already know it? 14 CFR § 135.65(b)
  • Besides an authorized safety representative of the Administrator, who may manipulate the flight controls during a Part 135 flight? 14 CFR § 135.115(a)
  • Cargo is carried in the cabin under section 135.87(c), outside an approved rack, bin or compartment. Where may it not be carried? 14 CFR § 135.87(c)
  • The certificate holder designates a pilot in command for a flight. For how long does that pilot remain pilot in command? 14 CFR § 135.109(b)
  • Enroute, section 135.93(c) sets a floor for autopilot use that is the greatest of three figures. Which fixed height is one of them? 14 CFR § 135.93(c)
  • For how long must a certificate holder keep its current list of aircraft used or available for Part 135 operations? 14 CFR § 135.63(b)
  • For how long must a Part 135 certificate holder keep the individual record of each pilot it uses? 14 CFR § 135.63(b)
  • For which aircraft does section 135.63(c) make the certificate holder responsible for a load manifest prepared before each takeoff? 14 CFR § 135.63(c)
  • In flight a pilot meets a potentially hazardous weather condition that the pilot considers essential to the safety of other flights. What does section 135.67 require? 14 CFR § 135.67
  • Section 135.79 requires flight locating procedures. For which flights? 14 CFR § 135.79(a)
  • To whom does the Part 135 ban on carrying a deadly or dangerous weapon on board not apply? 14 CFR § 135.119(b)
  • Under section 135.122, when may an aircraft not be moved on the surface, take off or land? 14 CFR § 135.122(a)
  • Until when must flight locating information be retained? 14 CFR § 135.79(b)
  • What must a certificate holder list in its manual about operational control? 14 CFR § 135.77
  • What must an autopilot be able to do before the Administrator authorizes it in place of a second in command? 14 CFR § 135.105(c)
  • Where must the certificate holder describe the emergency functions assigned to each category of required crewmember? 14 CFR § 135.123(b)
  • Which aircraft must have an emergency cockpit checklist under section 135.83(a)(2)? 14 CFR § 135.83(a)
  • Which of these does section 135.100 count as a critical phase of flight? 14 CFR § 135.100(c)
  • Which of these procedures must every cockpit checklist hold? 14 CFR § 135.83(b)
  • Which operation always needs a second in command under section 135.111? 14 CFR § 135.111
  • Which passenger seating configuration, excluding any pilot seat, makes a second in command required by section 135.99(b)? 14 CFR § 135.99(b)
  • Which person may be carried under section 135.85 without complying with the passenger-carrying requirements of Part 135? 14 CFR § 135.85(b)
  • Who must ensure that all passengers have been orally briefed before each takeoff of a Part 135 passenger flight? 14 CFR § 135.117(a)

Aircraft and equipment (Subpart C) 31

  • A liferaft for extended overwater operations is equipped item by item, not with a survival kit. How much emergency food does section 135.167(b) list for each person? 14 CFR § 135.167(b)
  • A multiengine aircraft carries passengers in IFR conditions. With the critical engine inoperative, what climb must its weight allow at the MEAs of the route or 5,000 feet MSL, whichever is higher? 14 CFR § 135.181(a)
  • A pressurized aircraft is operated above 25,000 feet MSL. How much supplemental oxygen must be available for each occupant other than the pilots, for a descent after loss of cabin pressure? 14 CFR § 135.157(b)
  • A single-engine aircraft carries passengers under IFR with one primary electrical generating source and a standby battery. How much of the emergency electrical load must the standby source supply, and for how long? 14 CFR § 135.163(f)
  • A turbine-powered airplane has 10 or more passenger seats, excluding any pilot seat. Which class of terrain awareness and warning system does section 135.154 require? 14 CFR § 135.154(a)
  • Above which altitude must an unpressurized aircraft carry oxygen for each occupant other than the pilots? 14 CFR § 135.157(a)
  • Above which passenger seating configuration must an aircraft have a public address system and a crewmember interphone system? 14 CFR § 135.150
  • Airborne thunderstorm detection equipment required by section 135.173 becomes inoperative en route. How must the aircraft then be operated? 14 CFR § 135.173(d)
  • An aircraft has a passenger seating configuration of more than 19 seats. How must its crash axe be carried? 14 CFR § 135.177(a)
  • An aircraft's type certification operating limitations do not require two pilots. What may then be used in place of two control wheels? 14 CFR § 135.147
  • An instrument is required by an airworthiness directive to be in operable condition, and the directive provides no relief. May it be included in the Minimum Equipment List? 14 CFR § 135.179(b)
  • An unpressurized aircraft flies for an hour at 13,000 feet MSL. Besides the pilots, how many of the occupants must oxygen be available for? 14 CFR § 135.157(a)
  • Before flight, what access must the flight crew have to the approved Minimum Equipment List? 14 CFR § 135.179(a)
  • During which part of a flight must the cockpit voice recorder required by section 135.151(a) be operated? 14 CFR § 135.151(a)
  • Except as section 135.179 provides, what condition must the required instruments and equipment in a Part 135 aircraft be in? 14 CFR § 135.143(b)
  • For night flights carrying passengers under VFR, which flashlight does section 135.159(f) require? 14 CFR § 135.159(f)
  • For which passenger seating configurations does section 135.155(c) require at least one hand fire extinguisher in the passenger compartment? 14 CFR § 135.155(c)
  • In addition to two gyroscopic bank-and-pitch indicators at the pilot stations, what does section 135.149(c) require on turbojet airplanes? 14 CFR § 135.149(c)
  • In extended overwater operations, what must each occupant's approved life preserver be equipped with? 14 CFR § 135.167(a)
  • Section 135.151(a) requires a cockpit voice recorder on a multiengine, turbine-powered airplane or rotorcraft for which two pilots are required. From how many passenger seats? 14 CFR § 135.151(a)
  • Section 135.180 requires a traffic alert and collision avoidance system on a turbine powered airplane with how many passenger seats, excluding any pilot seat? 14 CFR § 135.180(a)
  • What does section 135.163(c) require for each airspeed indicator of an aircraft carrying passengers under IFR? 14 CFR § 135.163(c)
  • Which aircraft in passenger-carrying operations must have approved airborne weather radar installed under section 135.175(a)? 14 CFR § 135.175(a)
  • Which aircraft must have an approved shoulder harness at each flight crewmember station under section 135.171(a)? 14 CFR § 135.171(a)
  • Which altimeter does section 135.149(a) require on every aircraft? 14 CFR § 135.149(a)
  • Which of these does section 135.159 list for a passenger flight under VFR over-the-top? 14 CFR § 135.159(d)
  • Which of these may always be operated on board under section 135.144(b), with no determination by the certificate holder? 14 CFR § 135.144(b)
  • Which receivers does section 135.165(a)(3) require on an aircraft used for IFR operations? 14 CFR § 135.165(a)
  • Who determines that some other portable electronic device will not interfere with the navigation or communication system of the aircraft? 14 CFR § 135.144(c)
  • With 6 to 9 passenger seats, what is the least terrain warning equipment a turbine-powered airplane must carry? 14 CFR § 135.154(a)
  • Within how many calendar months must a multiengine aircraft have been actually weighed for its current empty weight and center of gravity? 14 CFR § 135.185(a)

VFR and IFR limits and weather (Subpart D) 21

  • A helicopter flies under VFR in Class G airspace at 1,200 feet or less above the surface. What visibility does section 135.205(b) require at night? 14 CFR § 135.205(b)
  • A helicopter flies VFR under Part 135. What reserve must remain on reaching the first point of intended landing? 14 CFR § 135.209(b)
  • A landing area is marked by flare pots or lanterns for a night passenger operation. What does section 135.229(c) require? 14 CFR § 135.229(c)
  • A passenger-carrying airplane lands at night. How must the limits of the landing area be shown under section 135.229(b)? 14 CFR § 135.229(b)
  • A rotorcraft alternate airport has a published instrument approach. What ceiling and visibility must be forecast for it under section 135.221(b)(1)? 14 CFR § 135.221(b)
  • An airplane operates under VFR in uncontrolled airspace where the ceiling is less than 1,000 feet. What flight visibility does section 135.205(a) require? 14 CFR § 135.205(a)
  • Apart from the exceptions in paragraphs (b) and (j), what must an airport have before a pilot may begin an instrument approach to it under section 135.225(a)? 14 CFR § 135.225(a)
  • At night under VFR, outside designated mountainous terrain, how high above the highest obstacle within 5 miles of course must a Part 135 airplane fly? 14 CFR § 135.203(a)
  • Before an IFR takeoff, what must the latest weather reports or forecasts show for the next airport of intended landing at the estimated time of arrival? 14 CFR § 135.219
  • Conditions are such that frost, ice or snow may reasonably be expected to adhere to the airplane. Within how long before beginning takeoff must a pretakeoff contamination check be completed? 14 CFR § 135.227(b)
  • The destination has a standard instrument approach with a circling approach authorized. To leave out alternate fuel under section 135.223(b), what ceiling must be forecast from one hour before to one hour after arrival? 14 CFR § 135.223(b)
  • Except for takeoff and landing, how low may an airplane fly under VFR during the day under Part 135? 14 CFR § 135.203(a)
  • For a VFR flight, no approved weather report is available. What may the pilot in command use under section 135.213(a)? 14 CFR § 135.213(a)
  • How low may a helicopter fly under VFR over a congested area under section 135.203(b)? 14 CFR § 135.203(b)
  • How much fuel must an airplane carry beyond the first point of intended landing for a VFR flight at night under Part 135? 14 CFR § 135.209(a)
  • In IFR conditions an airplane must carry fuel to reach the first airport of intended landing, then the alternate, and then to fly for how long at normal cruising speed? 14 CFR § 135.223(a)
  • On an ILS final approach a pilot receives a later weather report below minimums. From which point may the approach continue under section 135.225(d)? 14 CFR § 135.225(d)
  • To be authorized for IFR routes outside controlled airspace, a certificate holder must show the crew can hold an intended track within what tolerance? 14 CFR § 135.215(b)
  • To leave out alternate fuel under section 135.223(b), what visibility must be forecast at the destination? 14 CFR § 135.223(b)
  • Weather at the departure airport is at or above takeoff minimums but below authorized IFR landing minimums. How close must an alternate airport be? 14 CFR § 135.217
  • With FAA authorization, where may frost remain on an aircraft at takeoff under section 135.227(a)? 14 CFR § 135.227(a)

Flight crewmember requirements (Subpart E) 11

  • Apart from a helicopter under VFR, what must a Part 135 second in command hold at the least? 14 CFR § 135.245(a)
  • Before designation as pilot in command in a commuter operation, how much operating experience does section 135.244 require in a turbojet-powered airplane? 14 CFR § 135.244(a)
  • For which period does section 135.247(a)(2) require night takeoffs and landings before a pilot in command carries passengers? 14 CFR § 135.247(a)
  • How far may the operating experience hours of section 135.244 be reduced by substituting one additional takeoff and landing for each hour of flight? 14 CFR § 135.244(b)
  • How many hours as a pilot does section 135.243(c) set for a pilot in command under IFR? 14 CFR § 135.243(c)
  • Of the 75 hours of actual or simulated instrument time an IFR pilot in command needs under section 135.243(c)(2), how many must have been in actual flight? 14 CFR § 135.243(c)
  • Outside the cases that need an airline transport pilot certificate, how much total time as a pilot must a Part 135 pilot in command have under VFR? 14 CFR § 135.243(b)
  • To carry passengers as pilot in command under Part 135, what must the pilot have done within the preceding 90 days? 14 CFR § 135.247(a)
  • To serve as second in command under IFR, how many instrument approaches must a pilot have logged within the 6 calendar months before the month of the flight? 14 CFR § 135.245(c)
  • Under whose supervision must the operating experience of section 135.244 be acquired? 14 CFR § 135.244(b)
  • Which certificate must the pilot in command of a turbojet airplane hold in Part 135 passenger-carrying operations? 14 CFR § 135.243(a)

Flight time limits and rest (Subpart F) 17

  • A certificate holder requires a crewmember to travel to the airport where a trip begins, and the travel is not local in character. How does section 135.263(c) treat that time? 14 CFR § 135.263(c)
  • A scheduled-operations crewmember has 9 or more hours of scheduled flight time. How much consecutive rest must be scheduled in the 24 hours before the scheduled completion of a flight segment? 14 CFR § 135.265(b)
  • An assignment under section 135.267(b) must provide how much consecutive rest in the 24-hour period before its planned completion time? 14 CFR § 135.267(d)
  • Apart from the listed exceptions, what is the longest scheduled duty period section 135.273(b)(1) allows for a flight attendant? 14 CFR § 135.273(b)
  • Before reporting to the hospital for a helicopter hospital emergency medical evacuation service assignment, how much consecutive rest must a flight crewmember have? 14 CFR § 135.271(b)
  • During any 24 consecutive hours, what is the flight time limit of section 135.267(b) for an unscheduled crew of two qualified pilots? 14 CFR § 135.267(b)
  • For an unscheduled one- or two-pilot crew, what is the limit on a crewmember's total flight time in all commercial flying in any calendar quarter? 14 CFR § 135.267(a)
  • For an unscheduled three-pilot crew, what is the limit on duty hours in any 24 consecutive hours? 14 CFR § 135.269(b)
  • How many rest periods of at least 24 consecutive hours must an unscheduled-operations crewmember be given in each calendar quarter? 14 CFR § 135.267(f)
  • How much flight deck duty does section 135.269(b) allow a pilot in 24 consecutive hours? 14 CFR § 135.269(b)
  • In scheduled air transportation, how often must each flight crewmember be relieved from all further duty for at least 24 consecutive hours? 14 CFR § 135.265(d)
  • In scheduled Part 135 operations, what is the limit on a flight crewmember's total flight time in all commercial flying in any 7 consecutive days? 14 CFR § 135.265(a)
  • May a certificate holder assign a flight crewmember to other duty with the certificate holder during a required rest period? 14 CFR § 135.263(b)
  • Section 135.267(c) lets flight time fall inside a regularly assigned duty period. How long may that duty period be? 14 CFR § 135.267(c)
  • Weather makes an unscheduled crewmember exceed the daily flight time limit by 45 minutes. How much rest is required before the next flight time assignment? 14 CFR § 135.267(e)
  • What flight time does section 135.265(a) allow a scheduled-operations pilot in one calendar month? 14 CFR § 135.265(a)
  • What yearly cap does section 135.267(a) put on a pilot's commercial flying? 14 CFR § 135.267(a)

Crewmember testing and checks (Subpart G) 12

  • A crewmember completes a required test in the calendar month after the month in which it is due. How does section 135.301(a) treat it? 14 CFR § 135.301(a)
  • A pilot fails a required maneuver during a Subpart G check. What may the person giving the check do? 14 CFR § 135.301(b)
  • A pilot has not flown over a route and into an airport within the preceding 90 days. What must the certificate holder's procedure ensure before the flight? 14 CFR § 135.299(c)
  • How recently must a flight attendant crewmember have been tested under section 135.295? 14 CFR § 135.295
  • How recently must a Part 135 pilot have passed the written or oral knowledge test of section 135.293(a)? 14 CFR § 135.293(a)
  • How recently must the pilot in command of an aircraft under IFR have passed the instrument proficiency check of section 135.297? 14 CFR § 135.297(a)
  • The line check of section 135.299(a) must consist of at least what? 14 CFR § 135.299(a)
  • To use one type of nonprecision approach under IFR, a pilot who has not demonstrated that type in the period may instead have demonstrated what? 14 CFR § 135.297(b)
  • What extra knowledge area does section 135.293(a)(9) add for rotorcraft and powered-lift pilots? 14 CFR § 135.293(a)
  • What must the instrument approaches flown on a section 135.297 instrument proficiency check include? 14 CFR § 135.297(b)
  • Which of these is one of the knowledge areas of the section 135.293(a) test? 14 CFR § 135.293(a)
  • Who gives the written or oral test of section 135.293(a)? 14 CFR § 135.293(a)

Training (Subpart H) 10

  • Before a certificate holder implements its training program, what must it obtain? 14 CFR § 135.323(a)
  • How does section 135.321(b) define initial training? 14 CFR § 135.321(b)
  • How recently must a crewmember have completed the appropriate initial or recurrent training phase under section 135.343? 14 CFR § 135.343
  • On portable fire extinguishers, what does section 135.331(b)(2) ask emergency training to emphasize? 14 CFR § 135.331(b)
  • To which certificate holder does section 135.343 not apply? 14 CFR § 135.343
  • What is a check pilot (aircraft) under section 135.337(a)? 14 CFR § 135.337(a)
  • What may be substituted for recurrent flight training for pilots under section 135.351(c)? 14 CFR § 135.351(c)
  • Which emergency situation is on the section 135.331(b)(3) list of situations crewmember emergency training must cover? 14 CFR § 135.331(b)
  • Which of these is part of a crewmember's recurrent ground training? 14 CFR § 135.351(b)
  • Which training does section 135.329(a)(1) require for newly hired crewmembers? 14 CFR § 135.329(a)

Airplane performance limits (Subpart I) 6

  • A turbine engine powered large transport category airplane is planned to a destination under the general rule of section 135.385(b). Within what share of the effective runway length must a full stop landing be possible? 14 CFR § 135.385(b)
  • At an alternate airport, within what share of the effective runway length must a turbo-propeller-powered large transport category airplane be able to stop under section 135.387(a)? 14 CFR § 135.387(a)
  • For an eligible on-demand operator selecting an alternate airport, what share of the effective runway length does section 135.387(b) allow for the full stop landing? 14 CFR § 135.387(b)
  • For landing, where does the effective length of the runway start under section 135.361(b)? 14 CFR § 135.361(b)
  • From what height above the intersection of the obstruction clearance plane and the runway are the landing distances of sections 135.385 and 135.387 measured? 14 CFR § 135.387(a)
  • What slope does section 135.361(c) give the obstruction clearance plane? 14 CFR § 135.361(c)

Maintenance (Subpart J) 10

  • A single engine aircraft carries passengers under IFR on an FAA approved engine trend monitoring program. How often must the oil analysis be done? 14 CFR § 135.421(c)
  • After maintenance, what must be prepared before a certificate holder may operate the aircraft under section 135.443(a)? 14 CFR § 135.443(a)
  • An aircraft is type certificated for nine passenger seats or less. Under which rules does section 135.411(a)(1) say it is maintained? 14 CFR § 135.411(a)
  • By when must the mechanical interruption summary report for a month be mailed or delivered? 14 CFR § 135.417
  • From how many type-certificated passenger seats, excluding any pilot seat, must an aircraft be maintained under the maintenance program of sections 135.423 through 135.443? 14 CFR § 135.411(a)
  • Operations specifications are amended to require an approved aircraft inspection program. Unless the Administrator sets another period, how soon must the program be submitted? 14 CFR § 135.419(c)
  • Which of these goes in the mechanical interruption summary report of section 135.417? 14 CFR § 135.417(b)
  • Which record must a certificate holder keep under section 135.439(a)(2)? 14 CFR § 135.439(a)
  • Who carries the primary responsibility for the airworthiness of an operator's aircraft under section 135.413? 14 CFR § 135.413(a)
  • Who signs the airworthiness release or log entry of section 135.443? 14 CFR § 135.443(b)

Hazardous materials training (Subpart K) 6

  • A new hire has not yet completed initial hazardous materials training. For how long may that person load items for transport under direct visual supervision? 14 CFR § 135.505(b)
  • After a person stops performing a hazardous materials job function, how long must the training record still be kept? 14 CFR § 135.507(a)
  • How does section 135.501(b) define company material (COMAT)? 14 CFR § 135.501(b)
  • How far back must the hazardous materials training record of section 135.507(a) reach? 14 CFR § 135.507(a)
  • How often is recurrent hazardous materials training required under Subpart K? 14 CFR § 135.501(b)
  • Which job function is on the section 135.501(a) list that Subpart K training covers? 14 CFR § 135.501(a)

Helicopter air ambulance (Subpart L) 15

  • A helicopter is flown empty to the site where a patient will be picked up. Is that flight a helicopter air ambulance operation under section 135.601? 14 CFR § 135.601(b)
  • Before a VFR helicopter air ambulance flight, what must the pilot in command identify and document under section 135.615(a)(2)? 14 CFR § 135.615(a)
  • Besides meeting section 135.243, what must the pilot in command of a helicopter air ambulance operation hold? 14 CFR § 135.603
  • By how much must terrain and obstacles along the route be cleared vertically in VFR helicopter air ambulance operations at night? 14 CFR § 135.615(b)
  • For an authorized helicopter air ambulance IFR operation at an airport with no weather reporting, how near must the weather reporting facility used be? 14 CFR § 135.611(a)
  • From how many helicopter air ambulances on its operations specifications must a certificate holder have an operations control center? 14 CFR § 135.619(a)
  • How does a pilot show familiarity with a local flying area before using it? 14 CFR § 135.609(c)
  • How far from a designated location may a local flying area extend under section 135.609(b)? 14 CFR § 135.609(b)
  • Medical personnel have completed the certificate holder's approved training program within the preceding 24 calendar months. How much training must that program hold at the least? 14 CFR § 135.621(b)
  • The missed approach point is 3 NM or less from the landing area and section 135.613(a)(1) does not apply. What are the VFR minimums at night on transitioning from IFR? 14 CFR § 135.613(a)
  • On a Point-in-Space approach with a "Proceed VFR" segment, the missed approach point is 1 NM or less from the landing area. What flight visibility applies on transitioning to VFR? 14 CFR § 135.613(a)
  • Over what span must the flight data monitoring system of section 135.607 be operated? 14 CFR § 135.607
  • When must the pilot in command conduct the preflight risk analysis and complete its worksheet? 14 CFR § 135.617(c)
  • Which human factor does section 135.617(a)(2) name for the preflight risk analysis? 14 CFR § 135.617(a)
  • Which system does section 135.605 require on a helicopter in helicopter air ambulance operations? 14 CFR § 135.605(a)

How this list was compiled: Written from 14 CFR part 135 (Operating Requirements: Commuter and On Demand Operations), read at https://www.ecfr.gov/current/title-14/part-135 in the eCFR text dated 2026-09-29, on 2026-10-04. Every question names the section its answer comes from and links to that section. Licence: Own work. Questions, answer choices and explanations were written for this site from the rule text, which is a US government work. Nothing is copied from an FAA knowledge test, from an operator's own test or manual, or from any prep company or other practice test.

How it works

This unofficial Part 135 regulations practice test asks 185 questions on 14 CFR part 135, grouped by subpart, each naming its section. A printable key facts sheet, the Part 135 regs cheat sheet people search for, sits under the questions.

Read the full guide

Answer, then read the section

Pick one of three answers and it is marked at once. The explanation names the section of part 135 behind the answer and links to it. The Start from menu follows the part's subparts, A to L; the helicopter air ambulance rules of Subpart L are a topic of their own.

Print the key facts sheet

Under the questions, open the key facts sheet and press Print this sheet: one line per limit, by subpart, each with its section.

What this bank is not

The FAA does not publish its knowledge test question bank, and these are not its questions. A section 135.293 test also covers the operator's own operations specifications, manual and aircraft, which no public page can hold.

  • Seat counts decide many answers: note where 10 or more passenger seats, or more than 19, changes the rule.
  • Subpart F sets separate flight time limits for scheduled flights, unscheduled one- and two-pilot crews, and three- and four-pilot crews.

Questions and answers

Is there a Part 135 regulations cheat sheet to print?

The key facts sheet under the questions lists 59 limits by subpart, each with its section number. Press Print this sheet, or choose Save as PDF in the print window. It is a study sheet; the rule text governs.

Are these the questions on a Part 135 knowledge test?

No. The FAA does not publish its question bank, and every question here was written for this site from the rule text. A section 135.293 test also covers the operator's own operations specifications, manual and aircraft, which are not here.

How often does a Part 135 pilot take the knowledge test?

Section 135.293(a) asks for a written or oral test passed since the beginning of the 12th calendar month before the pilot serves. Under section 135.301(a), a test completed in the month before or after the due month counts as completed on time.

Which subparts of Part 135 are covered?

All twelve, A to L: general rules, flight operations, equipment, VFR and IFR limits and weather, crew requirements, flight time and rest, testing, training, airplane performance, maintenance, hazardous materials training and helicopter air ambulance. The appendices are not covered.

Which edition of Part 135 was used?

The eCFR text of 14 CFR part 135 dated September 29, 2026, read on October 4, 2026. Rules change, and the current text at ecfr.gov is the final word.

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