Archive > Questions and Answers
Light procedures
EHM-0654 Murray:
[strike]I think that it's block-to-block for the NAV lights, regardless of engine state, but as always, don't quote me.
I've certainly never picked up a penalty from FSP for NAV lights, and I normally turn them on before engine start, off after shutdown.[/strike]
Well, half an hour skimming and searching through my "Big Boys and Girls Fun Book of Boeing 737's" (thanks again for that P-F) gives the following:
"Position (navigation) lights are to be ON any time the aircraft is powered."
In fact, the US airline whose AOM it is says the pilot should turn on the Pos lights prior to the external check (which for the 737 is, like, the first thing the FO is expected to do)
Can't get much more equivocal than that, I think.
EHM-1617 Iain:
OK, cheers.
EHM-0654 Murray:
*nudge for edit*
EHM-1617 Iain:
So now you're saying basically even before the beacon? Basically any time that the aircraft is doing anything at all?
EHM-0654 Murray:
If the aircraft has power (battery, ground, APU or engine), turn the POS/NAV lights on. ;)
And for information only, said US carrier also mandates that at night the logo light is to be ON any time the aircraft is below 18,000ft and moving :)
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