Flaps Flashcards
1
Q
What powers the alternate flaps?
A
electric motors
2
Q
Does alternate flaps provide asymmetry protection?
A
no
3
Q
When would you use alternate flaps?
A
“Flap Control” EICAS message (lose the flap control computers or flap lever is INOP)
4
Q
How many flap control units are there and what are their purpose?
A
3
- sequencing and monitoring of flap operation
- primary control, secondary control indication and annunciation
- TE flap asymmetry protection in primary and secondary modes
- flap load relief in primary mode only
- flap position information to EICAS and other systems
5
Q
Where do you read the flap display?
A
primary EICAS
6
Q
What is the difference between the alternate flap mode of operation and the secondary flap mode of operation?
A
while electric motors are used in both modes, the sequencing is different
- in the alternate mode LE and TE extend together
- in secondary mode, inboard and midspan LE extend when flap lever is set at flaps 1, the outboard LE extend when flap lever set at flaps 5
7
Q
what does an X in one of the expanded flap indicators mean?
A
sensor for that particular flap position indicator is not powered
