Landing gear Flashcards
Which system control landing gear extension, retraction and sequencing of the doors?
Two LGCIUs (Landing Gear Control and Interface Units)
When is control switched from one LGCIU to the other?
- In case of failure
- At the completion of one complete gear cycle at retraction.
Which hydraulic system actuates the landing gear and doors?
Green
When does the safety valve close?
> 260kts or with the MLG on the ground
How many sets of proximity sensors are there?
One set for each LGCIU
What happens when turning the gravity extension crank?
- Landing gear hydraulics isolated from green system
- Door and landing gear unlocked
- Gravity drops the gear in to extended position
Will the doors close following gravity extension?
No
Which LGCIU is connected to the Landing Gear Indicator Panel?
LGCIU 1
What is the significance of the red UNLK light?
Gear is not locked in the selected position
What is the max nose wheel steering angle?
+/-6° from rudder pedals
+/-75° from hand wheel
Which hydraulic system actuate the NWS?
Yellow
When does the NWS receive hydraulic pressure?
- A/SKID NWS switch ON
- Towing lever in normal position
- One engine running
- On the ground
Which hydraulic system is used for the normal brakes?
Green
Which hydraulic system is used for the alternate brakes?
Yellow, backed up by hydraulic accumulator
Can the MAX autobrake setting be used on ground and in flight?
Only on ground