Q&A Forum
1131 questions found
In a FADEC system, active control switchover occurs
- on engine startup only.
- when channels A and B are healthy.
- on shutdown.
I think the correct answer is ON SHUTDOWN.
I found the below explanation from a different site.
On the CF6 FADEC, each startup uses an alternative channel.But the switch-over occurs on shutdown of the previous run.The reason for this is that the switch-over at start up might interrupt the start-up sequence.
What is the pressure increase over one stage of a centrifugal compressor?
- 5:1
- 1.2:1
- 8:1
I think the answer is 8:1 because Jeppesen Gas Turbine Powerplant quotes the latest modern centrifugal compressor as having a pressure ratio of 10:1
An autotransformer is
- primary and secondary coils.
- primary coil only.
- primary and secondary coils on single bar.
Why
Mandatory markings for flight instruments, or placards are annotated in the
- Aircraft Maintenance Schedule.
- Flight manual or Certificate of Airworthiness.
- Aircraft Maintenance Manual.
Are in maintenance manual ATA 11 "PLACARDS AND MARKINGS", or not?
When is a Noise Certificate required to be carried aboard the aircraft?
- At all times.
- When flying in UK airspace only.
- When flying in UK or any EU member state airspace.
Why not at all times?