Landing Gear & Brakes Flashcards
If the airplane is landed with 1200psi on the brake accumulator gauge (assuming proper pre-charge) and the normal brakes fail, will the emergency brake be available?
No, it must be charged to allow braking
What does the red light in the landing gear handle indicate?
If the handle is UP - at least one gear door is not closed
If the handle is DN - at least one landing gear is not down
What does the anti-skid system compare wheel speed to in order to evaluate if a wheel is in a skid condition?
Independent wheel speed sensors on each wheel
From what system can the parking / emergency brake system be charged?
Aux system
If the parking / emergency brake system is used to stop the aircraft, what type of anti-skid protection is available?
None
Where can the brake temperatures be read?
On the BRAKES synoptic page
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.
How are the landing gear handle and the landing gear selector valve connected?
Electrically
Explain how to set the parking brake.
Pull the brake handle UP, turn it 90 degrees, and ensure that the brake accumulator pressure reads at least 1700psi
How would a failure of a gear door to close after gear retraction be indicated on the flight deck?
Red light in the gear handle
What is the first action that should be taken if the WoW circuit fails to shift to the airborne mode after takeoff?
Turn off the ground spoiler arming switch
(VERY IMPORTANT - ground spoilers could extend if power brought to idle)
What is the function of the dump valve switch on the overhead panel?
It resets the dump valves to hydraulic operation so that the landing gear can operate normally
What is the correct accumulator pre-charge pressure for the parking / emergency brake?
1200 psi, increasing or decreasing by 25psi for each 10F above or below 70F
How are the landing gear doors opened for a preflight inspection?
Install the door control valve pins, and open the doors by operating the ground service valve
If a closed landing gear uplock is discovered during the preflight inspection, how can the uplock be opened?
Install the door control valve pins and open the uplock by operating the ground service valve
During the preflight inspection, what is the correct indication on the emergency landing gear extension bottle gauge?
3100psi @ 70F
What is the indication if the nose landing gear has been turned beyond its design limits with the torque link attached?
The nose wheel steering unit over-travel indication on the nose gear will trip, indicating that maintenance action is required
How can proper brake wear be determined?
By observing the landing gear brake wear indicators, with the parking brake set.
In flight, when should the brake accumulator be charged back to 3000psi?
Just prior to landing
Where in the cockpit can the emergency gear extension bottle pressure be read?
On the HYDRAULICS and SUMMARY synoptic pages
At approximately how many degrees of travel will the over-travel indicator pop up on the nose wheel steering collar?
80-84 degrees
At approximately what pressure will the main tire over-inflation safety plug release?
450psi
At approximately what temperature will any one of the four main fusible plugs melt and release pressure?
199 degrees C
What is the travel authority of the tiller steering?
Variable rate steering installed
+/- 80 degrees < 18 kts, decreasing to +/- 16 degrees as IRS speed increases
What is the normal pedal steering authority?
+/- 7 degrees
What is the pedal steering authority if the tiller steering should fail?
+/- 16 degrees
If an amber “ANTI-SKID FAIL” message is displayed in flight, should the ANTI-SKID system be turned OFF?
No, the anti-skid system may still be partially operative
What is the normal nose wheel tire pressure?
115 psi
What is the recommended maximum speed for use of the tiller steering?
60 KCAS
If the blue “NWS FIXED GAIN” CAS is displayed, what is the effect on the tiller steering?
IRS input to the tiller is lost, and the steering authority will be constant at all speeds
