MSU+FORMS Flashcards
(34 cards)
4790/80?
Rework request
4790/3?
Maintenance requirement cards
4790/66?
TPDR / technical publication deficiency report
4790/60?
Maintenance action forms
4790/64?
Transaction report (receipt for checked out gear)
4790/102?
SE yellow license
4790/108?
Misuse and abuse
4790/12?
CDI recommendation (takes 10 days)
4790/51?
SE history record
4790/52?
SE pre-op documentation card
What does BITE stand for regarding the MSU?
Built in test equipment
What are the failure / testing %s on the MSU?
5%
55%
70%
98%
How many times does a failure have to occur, before the MSU initiates a service failure?
Twice with no successful start In between
What is the maximum exhaust gas temperature of the MSU?
1328°F
What type of lubricating oil is used with the MSU?
MIL-PRF- 7807 or MIL-PRF-23699
What is the maximum oil temperature of the MSU?
5L or 1.3gal
The MSU feeder tank initiates a unit shutdown when the level in the tank lowers to what %?
30% of full fuel level
The fuel control valve on the MSU is controlled by?
The FADEC
How long is the pneumatic starter duct on the MSU?
30 ft long
How many operating modes does the MSU have?
4
No load
MES- main engine start
ECS- environmental control systems
Cold crank
What operating mode does the MSUs FADEC suppress almost all safety shutdown features ?
During MES mode
Main engine start mode
How long does it take for the MSU to switch to ECS mode when a fault is present?
After 180 seconds in MES mode with an appropriate fault
What are the appropriate faults that will take the MSU out of MES mode during aircraft start up?
Over speed
Under speed
Low fuel
Failure of the speed sensor
The MSU turbine reaches its rated speed after approximately how long?
35 seconds
