Free FAA ATP Single-Engine Practice Test
This is a free FAA ATP Single-Engine practice test — a full 90 questions in the same format as the real ATS knowledge test, scored at 70%. ATS is the single-engine ATP used by part 135 on-demand operators, so this bank weights what that job turns on: the 135 approach ban and takeoff alternate rules, 135 VFR minimums and flight-time limits, the autopilot that stands in for a second in command, single-pilot IFR workload management, turboprop systems, and approach procedures. Original questions with a real reference on every one.
ACS-aligned study questions written by ATIS Alerts — not actual FAA test questions.
92 practice questions · 60 flashcards · 90-question test · 70% to pass
The somatogravic illusion during a night takeoff or go-around can cause a pilot to —
A new question every day at 0000Z.
Your progress
Saved on this device — no account needed.
Study by topic
Tap a topic to start a focused 10-question quiz on it.
The ATS knowledge test at a glance
These are the FAA’s own numbers for the Airline Transport Pilot Single-Engine Airplane knowledge test, from the Airman Knowledge Testing Matrix. Our practice test matches them.
| FAA test code | ATS |
|---|---|
| Questions | 90 |
| Time allowed | 2.5 hours |
| Passing score | 70% (63 correct) |
| Minimum age to test | 21 |
| Administered by | PSI, at an FAA-approved testing center |
Sample ATP Single-Engine practice test questions
A few examples of the 92 ACS-aligned questions in this bank — correct answer marked.
A narrower-than-usual runway on approach will tend to make a pilot —
- A. believe the aircraft is lower than it actually is, leading to a high approach.
- B. believe the aircraft is higher than it actually is, leading to a lower-than-normal approach. ✓
- C. misjudge the crosswind component.
- D. flare too high above the runway.
A narrow runway looks like a wider one seen from farther away and higher up, so the natural correction is to descend. A wide runway does the opposite, producing a high flare and a hard landing. Upsloping terrain and rain on the windscreen add the same low-approach bias.
Reference: PHAK ch.17; AIM 8-1-5
A part 135 flight crewmember assigned to unscheduled operations must be given a rest period of at least —
- A. 8 consecutive hours in every case.
- B. 9 consecutive hours, reducible to 8 by mutual agreement.
- C. 10 consecutive hours before being assigned to any duty, when scheduled for 8 hours or less of flight time. ✓
- D. 12 consecutive hours before every duty period.
Ten consecutive hours of rest precedes an assignment of up to 8 hours of flight time, and the required rest grows as scheduled flight time increases. Rest means free of all duty and all present responsibility for work.
Reference: 14 CFR 135.267
A TAF is normally valid for —
- A. 6 hours, issued hourly, for the airport surface only.
- B. 12 hours, issued twice daily, for a 25-mile radius.
- C. 24 or 30 hours, issued four times daily, for the area within 5 statute miles of the airport. ✓
- D. 48 hours, issued twice daily, for the terminal area.
The 5-statute-mile radius is the detail that catches people out: a TAF describes the airport vicinity, not the route or a nearby field. For anything between terminals you need area forecasts, prog charts, and PIREPs.
Reference: AIM 7-1
An airplane weighs 8,500 pounds with a CG at 152.0 inches. Moving 200 pounds of cargo from station 200 to station 120 will move the CG —
- A. 0.94 inch forward.
- B. 1.88 inches aft.
- C. 1.88 inches forward. ✓
- D. 3.76 inches forward.
CG change = (200 × 80) ÷ 8,500 = 16,000 ÷ 8,500 = 1.88 inches, and the load moved forward so the CG moves forward — to 150.12 inches. Total weight is unchanged by a shift.
Reference: FAA-H-8083-1
To serve as pilot in command in part 135 IFR operations, a pilot must hold at least —
- A. a commercial certificate with no instrument rating if a second pilot is carried.
- B. an airline transport pilot certificate in every case.
- C. a commercial pilot certificate with an instrument rating and meet the 135.243 experience requirements. ✓
- D. a private pilot certificate with an instrument rating.
135.243 sets a floor of a commercial certificate with an instrument rating plus 1,200 hours total time, including 500 cross-country, 100 night, and 75 instrument. An ATP is required for larger operations such as those using aircraft with 10 or more passenger seats.
Reference: 14 CFR 135.243
About the ATP Single-Engine written test
The Airline Transport Pilot Single-Engine Airplane knowledge test (ATS) is 90 multiple-choice questions with a time limit of 2.5 hours, administered by PSI at approved testing centers. You need 70% — 63 of 90— to pass, and the questions are drawn from the FAA Airman Certification Standards. Bring a valid photo ID and your instructor’s endorsement (or an approved equivalent), and plan to keep your test report — you’ll review any missed areas with your instructor before the practical test. Knowledge test results are valid for 24 calendar months.
From study to the real sky
Weather is a big slice of every airplane written — and it stays useful long after you pass. Practice on the real thing:
Practice weather knowledge, then watch it live
Track any airport with ATIS Alerts and get a Telegram message when the ATIS changes or conditions drop — free, no app to install.
Free FAA ATP Single-Engine practice test FAQ
How many questions are on the FAA ATP single-engine written test?
90 questions, with 2.5 hours to complete them. You need 70% — 63 correct — to pass.
What is the FAA code for the ATP single-engine airplane test?
ATS. It is often called the part 135 single-engine ATP.
Who takes the ATS test instead of the ATM?
Pilots seeking an ATP certificate with an airplane single-engine class rating, typically for part 135 on-demand and commuter operations flown in single-engine aircraft.
What is the minimum age for the ATP single-engine certificate?
23 for an unrestricted ATP. The minimum age to take the knowledge test under the FAA testing matrix is 21.
Does this practice test cover part 135 operating rules?
Heavily. It covers the approach ban based on reported visibility, the takeoff alternate requirement, IFR fuel, 135 day and night VFR minimums, flight-time and rest limits, and the single-pilot IFR autopilot requirement in 14 CFR 135.105.
How does the ATS test differ from the ATM test?
The airmanship core is similar, but ATS is 90 questions rather than 125 and is weighted toward part 135 operations and single-pilot IFR, while ATM covers transport-category performance, turbine systems, and part 121 air carrier operations.
Other FAA written tests
Every course on ATIS Alerts is free and works the same way — a full-length practice test in the real FAA format, topic quizzes, and flashcards.
- Free FAA Sport Pilot Practice TestSPA · 40 Q
- Free FAA Recreational Pilot Practice TestRPA · 50 Q
- Free FAA Private Pilot Practice TestPAR · 60 Q
- Free FAA Instrument Rating Practice TestIRA · 60 Q
- Free FAA Commercial Pilot Practice TestCAX · 100 Q
- Free FAA ATP Multiengine Practice TestATM · 125 Q
- Free FAA Part 107 Drone Practice TestUAG · 60 Q
More: test prep hub · practice test · flashcards · free pilot tools