LDG ALT (NNOs)
Hello,
Humble question once more from me at the depths of airline flying, this time regarding the checklist following a smoke detection/fire warning in the cargo hold (any one), onboard the 747.
In the QRH, it says to, if above 8,000ft:
LDG ALT switch... MAN
LDG ALT selector... Set ther landing altitude to between 8,000 and 8,500ft to command cabin altitude to 8,000ft.
May I simply ask what LDG ALT is exactly, what purpose it serves and how it has anything to do with the procedure following a smoke/fire detection?
Further down, it says in the Deferred Items checklist, under Before descent: LDG ALT switch... AUTO. I'd have thought that knowing you will land at the nearest suitable airfield, you're automatically put in a 'Before descent' situation, making the former checklist items irrelevent! (setting to MAN, putting 8,000).
Thanks in advance!
TP.
Last edited by Tonic Please; 27th June 2012 at 19:05.