7- Engines Flashcards
apu maint Blue ng only
maint problem exist
apu can be used (lo oil qtdy)
apu door. max only
not in commanded position
open when apu is off
ground not in gnd position
flight not in flight position
apu low oil pressure
max and ng
normal during start
lo oil press causes a auto-shutdown
if light come on when shutoff apu light stays on for 5min
apu fault max and ng
what is it?
what if on sw off?
inhibit when?
a malfunction exist
caused a shutdown
if came on when spu sw is set off, stays 5min
light disarmed when sw is off
max to egt for max and ng
max cont egt for max and ng
1038 / 950. 5min
1013 / 925 cont
apu overspeed. max and ng
overspeed caused an auto shutdown
ovrspd protect failed self test during shutdown
if light come on on sw off stays for 5 min
disarmed when sw is off
TCMA
thrust control management accommodation
protect against unacceptable high pwr assymmetric and eec shut off the fuel for the engine
electronic overspeed sys
protect against exceedance n2 overspeed eec shutoff the fuel
reverser air gnd
reverser air ground logic failed
reverser will deploy if commanded inflight
reverser command
inflight only
reverser is not on down position while inflight
reverser. - ng
- isolation valve or thrust reverser control valve is not in commanded position
- one or more thrust reverser sleeves are not in commanded state
- auto–restow circuit has been activated
- a failure has been detected in synchronization shaft lock circuitry.
reverser limited
reverser may not deploy, OR
if deployed will be limited to idle power
start valve open
on du
valve failed to close air is been supplied to starter
engine control ng max
inhibit?
not dispatchable fault on eec
inhibited:
eng off,
above 80kt to 30s after tchdn
eng oil filter bypass
on du
impending bypass of scavenge filter
all engine crew alerts will blink for…
when is inhibited?
10 sec than stays steady. inhibited blnk from : 80kt to 400ft OR 80kt +30 sec below 200ft til tchdwn
during inhibit will be steady
eng lo oil pressure
on DU
oil press below red line
13 psi ng
17 psi max
fuel flow
msg on du max
abnormal high ff than expected by fmc
+15% in 5 min
thtust msg
on du. max
thrust is more or less than commanded thrust
also n1 command sector become amber
nnc applicable than go to eng limit surge stall 7.2
eng fail alert
start lever idle and
n2 less than
63 % max and
50% ng
eng lo oil temp. max
no message
limitation of min 31 degrees for takeoff
A/T limit
a/t computer using degraded n1limit
engine low oil quantity
wy dispatch 15
no nnc
check parameters pressure and temperature
eng start sw - off
normally off both igniters activated if start lever Idle and: uncomanded rapid decrease on n2 n2 between 65 and to 50% or (57-50 max) inflight n2 between idle and 5%
