DA-42 NG: Landing Gear, Brakes & HydraulicsTechnical Specific — DGCA CPL practice questions
Question 1 of 12
The landing gear is:
All 12 questions — DA-42 NG: Landing Gear, Brakes & Hydraulics
Technical Specific · DGCA CPL. The correct option is marked on each.
Q1. The landing gear is:
- A.Fixed tricycle
- B.Retractable tricycle, hydraulically operated✓
- C.Retractable tailwheel
- D.Retractable, electrically screw-jacked
Why: Pressure comes from an electrically driven hydraulic pump.
Q2. A normal gear extension or retraction takes approximately:
- A.2 – 4 seconds
- B.6 – 10 seconds✓
- C.15 – 20 seconds
- D.30 seconds
Why: 6 – 10 seconds.
Q3. Three green lights beside the gear selector indicate:
- A.The gear is in transit
- B.Each leg is down and locked✓
- C.The hydraulic pump is running
- D.The gear is up and locked
Why: Always confirm three greens before landing.
Q4. The red gear warning light illuminates when the landing gear is:
- A.Down and locked
- B.Up and locked
- C.Neither fully up nor fully down and locked✓
- D.Selected up on the ground
Why: I.e. in transit or unlocked.
Q5. The landing gear is held in the retracted position by:
- A.Mechanical uplocks only
- B.Hydraulic pressure✓
- C.Spring tension
- D.Electrical solenoids
Why: An accumulator keeps that pressure steady so the pump does not cycle continuously in the cruise.
Q6. The aural gear warning horn sounds when the landing gear is retracted and a power lever is brought below approximately:
- A.10%
- B.20%✓
- C.35%
- D.50%
Why: A CHECK GEAR caution also appears. The same warning occurs if landing flap is selected with the gear up.
Q7. Emergency extension of the landing gear is achieved by:
- A.Pumping a manual hydraulic handle
- B.Releasing the hydraulic pressure and letting the gear fall by gravity✓
- C.An electrical backup motor
- D.A compressed-air bottle
Why: Since pressure holds the gear up, removing it lets gravity do the work.
Q8. The correct order for an emergency gear extension is:
- A.Pull the emergency lever, then select the gear DOWN
- B.Select the gear DOWN, then pull the emergency lever✓
- C.Pull the emergency lever only
- D.Cycle the gear selector three times
Why: Select the gear DOWN, then pull the emergency lever. Once used, the system must be checked by maintenance before the lever is pushed back in.
Q9. Inadvertent gear retraction on the ground is prevented by:
- A.A squat switch✓
- B.A mechanical pin
- C.The parking brake
- D.A circuit breaker
Why: It prevents the hydraulic valve from operating with weight on the wheels.
Q10. Nose wheel steering on the ground is by:
- A.A tiller
- B.The rudder pedals✓
- C.Differential power only
- D.A steering wheel
Why: A damper prevents shimmy, and the steering disconnects when the gear retracts.
Q11. When towing with a tow vehicle, the nose wheel must not be turned more than:
- A.20° either side
- B.30° either side
- C.40° either side✓
- D.60° either side
Why: Exceeding this damages the gear.
Q12. The wheel brakes are:
- A.Hydraulic disc brakes on the main wheels, operated by toe pedals✓
- B.Drum brakes on all three wheels
- C.Cable-operated brakes
- D.Electrically actuated brakes
Why: Individually, which also assists steering in a strong crosswind.