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Chapter 13-2

Landing Gear and Brakes

QuestionAnswer
18. What 2 situations can the landing gear aural warning not be silenced? a) SLAT/FLAP lever in the 0, 1, 2, 3, or 4 position *** Radio altitude below 700 ft AGL, and *** Thrust lever is set below a predetermined mid-range position b) Or, SLAT/FLAP lever in a landing position (5 or FULL) Regardless of thrust lever position and radio altitude
19. What keeps the gear down and locked in position? a) Downlock springs
20. What color is the in transit indication for landing gear on the EICAS? a) Amber
21. What color is the Up and locked indication for landing gear on the EICAS? a) White
22. What color is the Down and locked indication for landing gear on the EICAS? a) Green
23. What color is the Gear position and lever disagreement indication on the EICAS? a) Red (20 second grace period)
24. What does a red icon indicate on the landing gear position indicator? a) A discrepancy between the landing gear lever position and the respective landing gear position, or b) Landing gear kept in transit and is not locked in the commanded position
25. How do the landing gear doors actuate? a) Mechanically, during landing gear extension or retraction
26. How is the landing gear extended and retracted? a) Electrically commanded and hydraulically activated
27. What are three landing gear extension modes? a) Normal, Electrical Override and Alternate gear extension
28. Describe the normal landing gear extension mode: a) Landing gear lever down releases hydraulic pressure for the uplocks and retraction actuators
29. When would you use the Alternate gear extension procedure? a) If hydraulic pressure is not available for gear operation or the electrical system fails
30. Describe the Alternate gear extension mode: a) Relieves hydraulic pressure in the lines and releases all uplocks, gear extends by freefall (gear handle must be down to get 3 green on EICAS)
31. When would you use the Electrical Override switch? a) When the landing gear lever control box fails, bypassing the PSEM (Proximity Sensor Electronics Module) and commands gear extension in the same sequence as normal
32. When is the LG WRN INHIB switch used? a) To inhibit the landing gear warning in the event of a dual radio altimeter failure
33. Can the landing gear aural warning be silenced by pushing the " LG WRN INHIB " button? a) Only if both radio altimeters have failed and flaps set 0-4
34. What is the purpose of the DN LOCK RLS button on the landing gear lever? a) Manually releases the landing gear lever lock if gear won't retract on takeoff and terrain is imminent b) Lock protects against inadvertent landing gear retraction when weight-on-wheels
Created by: lglippig
 

 



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