Flashcards in 700/900 Flight Controls Deck (25):
Do the primary FCs have flutter dampers? Do the ailerons?
What is the SSCU? How many are there?
Spoiler stabilizer control unit
2 separate, redundant, independent systems
What does the SSCU control?
INBD/OTBD GLD panels
Horizontal stab trim
What is the RTL? What is it a function of on the ground? In the air?
Rudder Travel Limit, prevents over stressing of vertical stabilizer
WOW, airspeed, slat/flap position, engine state
Airspeed, flap ops, engine operation
What are the programmed limits of the RTL? How can you tell if it’s failed?
Variable/full travel limits of AFCS page: travel outside the goal posts
What does a RTL status msg mean? A caution msg?
Redundancy is gone
QRH directed, cannot respond to inputs
What are the secondary FCs? What is their primary purpose? Secondary?
Multifunction spoilers, horizontal stab indications, slats/flaps
1st: Assist in roll response @ low air speeds
2nd: act as flight spoilers
How many PCU do the MFS have? Which system runs the inboard? Outboard?
MFS have 1 PCU per panel
Inboard: HYD 3
Outboard: HYD 2
How is the HST controlled?
SSCU 1 and SSCU 2
What is the T/O range for the HST?
How is the SSCU tested?
Is it continuously monitored?
3 levels of auto testing:
CPOST, SPOST 1, SPOST 2
What does SPOST 2 check?
Integrity of MFS/GRND SP/ HST/ RTL/ and prox sensors
Do the 7/9 have slats? The 2?
What replaces the torque tubes in the 7/9 flaps?
Where are the leading edge slats? Are they anti-iced?
Leading edge of wing, 3 panels per wing
Yes, with bleed air
Which slat is the largest? Smallest?
INBRD slat largest
How many slat extensions are there? When are they used?
Flaps 1/8/20 = 20
Flaps 30/45 = 25
Which extends first, slats or flaps? Which retracts first?
Slats extend first
Flaps retract first
Are the slats linked together? What happens if an actuator breaks?
The adjacent flaps will drag the other slat into place
What happens if there is an asymmetric slat?
Slat brakes are applied to lock the slats into the failed position
What does the EMER FLAP switch provide? How much flap control do you have? Is there a speed restriction?
Limited flap selection if there is a mechanical failure
Slats 20 degrees
Flaps 20 degrees
EMER FLAP inhibited above 230 KIAS
How is airborne lift dumping accomplished?
2 MFS panels per wing
The MFS are powered by how many hydraulic systems?
2 : HYD 2 out HYD 3 in
Which flight condition does the RTL limit rudder travel?
in flight only