Stuff to do with the Landing Gear Flashcards
Max alt landing gear extension speed
175 KCAS
Normal gear extension speeds
225 to extend, 250 once extended
If the landing gear fails to retract inflight, you should:
NOT RETARD the throttles to idle in flight
UNARM the Ground Spoilers
If the landing gear fails to retract, what action must be performed to prevent landing with 400 lbs of applied brake pressure?
Press and Hold the DUMP valve for three (3) seconds
Which “Down and Locked Indication” has precedence over the other, The Landing Gear Control Panel OR the Landing Gear indication on the Flight Control Synoptic?
The Landing Gear Control Panel
Is there an Alternate Landing Gear Extension procedure?
YES, Emergency blow down
What is the Emergency Lander Gear Nitrogen Bottle Pressure?
3100 PSI
What does the illuminated GEAR HANDLE light mean during dear retraction?
The Landing Gear AND/OR the Gear Doors are NOT retracted (up and locked)
When will the GEAR HANDLE light extinguish on gear extension?
When all three gear are down and locked (gear door position is NOT considered)
If the LANDING GEAR is not extended, when will the Landing Gear Warning Horn Sound?
> Any time the Flaps are selected more than 22°
> Aircraft Altitude <350’ AGL and either throttle is positioned to IDLE (may be muted)
Anti-skid braking is available from which hydraulic system(s)?
L HYD / PTU / AUX
What is the min accumulator pressure to set the parking brake?
1700 PSI
What change occurs to the BRAKE PRESSURE display on the BRAKE synoptic when ANTISKID is selected OFF?
The PRESSURE scale changes a MAX of 800 PSI and a amber line appears at 400 PSI
In order to obtain a valid BREAK WEAR INDICATION
The PARKING BRAKE must be set
The DIGITAL ANTISKID CONTROL UNIT ALSO supplies wheel speed input in knots to which other mechanisms?
Ground Spoilers and Thrust reverses
Below ___kts ground speed, TILLER STEERING can provide how many degrees of steering?
18 kts, 80° left and right
RUDDER PEDAL STEERING normally provides how many degrees of steering?
7°
If TILLER STEERING FAIL CAS displayed - 16°
You experience an AMBER WOW FAULT in flight. What should you do?
Turn off Ground Spoilers and refer to checklist
What is required of the combined WOW to be in the AIR mode?
ONE main gear WOW is AIR mode.
Under which conditions on the ground will the landing gear warning horn sound?
Aircraft in Ground WOW mode, Air Data System indicates less than 60 kts, and the gear handle is up.
This can also happen in the air with WOW and ADS malfunctions
Where can pilots find recommendations regarding landing with less than all three gear down and locked?
AFM, emergency procedures section
The anti-skid system compares wheel speed to _____ in order to evaluate if a wheel is in a skid condition
IRS ground speed
What does pulling the emergency landing gear T-handle do
It repositions the dump valves allowing fluid to be returned to the reservoir and releases the nitrogen to extend the landing gear
What does pressing the DUMP VALVE switch do?
It resets the dump valves so that the landing gear can operate normally
The landing gear door or landing gear uplock can be repositioned on the ground by:
Installing the door control valve pins, and opening the doors by operating the ground service valve
What is the travel authority of the tiller steering?
Variable rate steering installed; 80° < 18 kts, decreasing to approx 16° as IRS speed increases.
The over-travel indicator will pop up on the nose wheel steering collar at approximately how many degrees of travel?
80 to 84 degrees
If an amber “ANTI-SKID FAIL” message is displayed in flight, should the ANTI-SKID system be turned OFF? Why?
No, the anti-skid system has backup paired wheel protection
What are the three condition for the Landing Gear Warning Horn?
Can any of them be silenced?
- Throttle resolver angle less than 5°, gear not down and locked below 350’AGL and Flaps <22° (Can be silenced)
- Flaps extended beyond 22° with Gear not down and locked
- Landing gear handle UP while aircraft is on the ground
What is the brake accumulator precharge pressure?
1200PSI - will not hold brakes.
Decrease 25 PSI for every 10° above or below 70°F
Does crew have anti skid with only AUX pump operating?
Yes
Can you take-off on a wet runway with Anti-skid inop
No.
Limitation:
Must have dry runway, 20° flaps, and cowl and wing anti-ice turned off.
What does the Anti-skid control unit use to determine hydroplaning or locked wheel?
IRS 1 and 2 references are used to compare wheel speeds, along with individual wheel speed sensors.
Compares same wheel on opposite gear.
On landing, when does the anti-skid control unit activate to low. speed braking?
When the aircraft decelerates below 10 kts.
