Qatar Airways pilot interview questions, with the answers that pass

100 questions written for Qatar Airways’s actual selection process. Below are 5 of them in full — the prompt, what the panel is really probing, a model answer, the red flags that fail it, and the follow-ups that come next. No account, nothing to sign.

These are our questions, written from Qatar Airways’s published process and from candidate reports labelled as such. They are not leaked interview material — nobody selling you that has it either.
Question 1 of 100·technical

Define the four forces in level flight and explain how each scales with airspeed.

What they are really probing: Aerodynamics 101 — they want you to demonstrate teaching ability.

Model answer

Lift, weight, thrust, drag. In level unaccelerated flight: lift = weight, thrust = drag. Lift scales with v² (L = ½ρv²S·CL); doubling speed quadruples lift at same AOA. Weight is constant (decreases as fuel burns). Drag: parasite drag ∝ v², induced drag ∝ 1/v² — total drag is U-shaped, minimum at L/Dmax. Thrust required = drag at the chosen speed; jet thrust available is roughly constant with airspeed at a given altitude (turbofan), prop thrust drops with speed. Tie to operations: at L/Dmax you're at max endurance for jets; max range for jets is at 1.32×L/Dmax due to specific fuel consumption. QR's A350 cruise speed is optimised on the OFP for these characteristics. End with a clean summary: 'In level flight, lift balances weight, thrust balances drag, and the relationship between drag and speed determines our optimum cruise.'

What fails this question

  • — Saying lift always increases with speed (only if AOA constant)
  • — Confusing thrust required and thrust available
  • — Not tying to operational cruise

Follow-ups they ask next

  • — What's L/Dmax for a 777?
  • — Why is max range faster than L/Dmax for a jet?
  • — What happens to drag at high Mach?
Question 2 of 100·technical

Explain Vmcg and Vmca. Which limits V1 and why?

What they are really probing: Engine-out aerodynamics.

Model answer

Vmcg (Minimum Control Speed on Ground): minimum speed on the ground at which the takeoff can be continued with the most critical engine inoperative, using only the rudder (no nosewheel steering) to maintain directional control within 30 ft of centreline. Vmca (Minimum Control Speed in Air): minimum speed in flight at which directional control can be maintained with the critical engine inoperative, with no more than 5° bank into the live engine. V1 is bounded below by Vmcg — you cannot abort below Vmcg because if you continue after engine fail you couldn't maintain centreline. V1 is bounded above by Vr and the runway length. On the 777-300ER at heavy weights, Vmcg typically 105-115 kts; on the A350-900, similar range. Tie to operations: short runway + heavy weight may make Vmcg the binding constraint, forcing higher V1 floor.

What fails this question

  • — Confusing Vmcg and Vmca
  • — Saying V1 = Vmcg always
  • — Not knowing bank-into-live-engine limit

Follow-ups they ask next

  • — What's the bank for Vmca?
  • — How does temperature affect Vmcg?
  • — Why no nosewheel steering for Vmcg?
Question 3 of 100·technical

What is the standard atmosphere and where is it used?

What they are really probing: Define cleanly.

Model answer

ISA (International Standard Atmosphere): sea level: pressure 1013.25 hPa, temperature 15°C, density 1.225 kg/m³. Temperature lapse rate: -1.98°C per 1000 ft to the tropopause (36,089 ft / 11 km), then isothermal at -56.5°C from tropopause to ~20 km. Above, temperature rises slowly. Used for: performance charts (TODA, climb gradient), aircraft certification, altitude reporting (above transition altitude, all aircraft fly to QNE based on ISA model). Real atmosphere often deviates — ISA+10 means 10°C warmer than standard. Higher temperature than ISA reduces engine thrust, reduces lift at same IAS, lengthens takeoff roll. QR ops in Doha often see ISA+15 to ISA+25 in summer — performance margins critical.

What fails this question

  • — Wrong sea-level values
  • — Wrong lapse rate
  • — Not knowing tropopause altitude

Follow-ups they ask next

  • — What's the tropopause altitude?
  • — What's ISA deviation at DOH in July?
  • — Why does ISA matter for takeoff?
Question 4 of 100·technical

Explain Mach buffet and how altitude affects margin.

What they are really probing: Tied to ULH and high-altitude cruise.

Model answer

Mach buffet: airframe vibration caused by shockwave formation on the wing's upper surface as local flow reaches sonic. Onset is gradual — feels like rough air. Cause: aerodynamic — at high subsonic speeds, the chord-wise pressure gradient creates supersonic flow over the curved upper surface even at subsonic free-stream. Altitude effect: at higher altitude, true airspeed for a given Mach is lower (cold air, slower speed of sound), but IAS for buffet onset reduces. The margin between low-speed (stall) buffet and high-speed (Mach) buffet narrows — coffin corner. Above optimum altitude, buffet margin shrinks below safe values (typically 1.3g operating limit). QR SOP: stay below max altitude for current weight + temperature, step climb as fuel burns. Highlight: the A350 has slightly higher buffet margin than the 777 at equivalent weight due to wing design.

What fails this question

  • — Confusing Mach buffet with stall buffet
  • — Saying altitude doesn't affect margin
  • — Forgetting temperature effect

Follow-ups they ask next

  • — How is max altitude computed?
  • — What's optimum altitude on the A350?
  • — Where's buffet margin published?
Question 5 of 100·technical

What's RNP, RNP-AR, and the difference between RNP 1.0 and RNP 0.3?

What they are really probing: PBN — QR uses extensively.

Model answer

RNP (Required Navigation Performance): a PBN navigation specification requiring the aircraft to remain within a defined lateral distance from track 95% of the time, with on-board performance monitoring. RNP 1.0 = 1.0 nm containment (typical terminal area); RNP 0.3 = 0.3 nm (final approach); RNP 0.1 (AR) = 0.1 nm (specific approaches with terrain constraints). RNP-AR (Authorization Required) is the most demanding: tight containment + RF (radius-to-fix) legs + obstacle clearance issues. Requires dedicated certification (aircraft, crew, operations). QR A350 is fully PBN-capable; RNP-AR approved on selected serial numbers for terrain-constrained airports (e.g., Innsbruck if QR served it). The OFP publishes the RNP value for each segment; pilot monitors the FMS RNP achievement vs required.

What fails this question

  • — Confusing RNP and RNAV
  • — Not knowing AR requires authorisation
  • — Saying all approaches are RNP

Follow-ups they ask next

  • — What's a radius-to-fix leg?
  • — What's RNAV vs RNP?
  • — When does QR file RNP-AR?

The other 95 questions

Same depth as the 5 above — model answer, red flags and follow-ups on every one. You just read a twentieth of the pack; if those five were not worth your time, the rest will not be either, and you should not buy it.

— Describe the A350 flight envelope protection in normal law.

— What is takeoff alternate, and when is one required?

— Explain anti-ice systems on the A350 and when to activate.

— What's the difference between IAS, TAS, and groundspeed?

— Brief decompression at FL400. What's the time of useful consciousness?

— Define stable approach for the A350 at QR. List the gates.

— What is asymmetric thrust on a twin and how do you trim for it?

— What is the A350 ECAM and how does it differ from EICAS?

— Explain ETOPS critical fuel for a Doha-Buenos Aires route.

— What is TAWS and how is it different from EGPWS?

See what the full prep includes Practise the aptitude stage free

Not affiliated with Qatar Airways. Process details are sourced and dated; candidate-reported detail is labelled as reported.