INSTR SWITCH

[canadaclipper]

Hello Captains. I purchased this wonderful aircraft on the weekend and absolutely love it. I noticed today that the INSTR SWITCH light just above the Captain's altimeter is lit. Can anyone tell me what this indicates? Thanks in advance.

[mmerelles]

The instrument transfer switches are out of the normal position.

There are 2, EFI & IRS, make sure both are set to normal position

You can find them on the overhead panel, left side above the fuel pumps

[Litjan]

hi canadaclipper,

and welcome to (exclusive!) club of 737 Classic pilots!

mmerelles has the answer - here is a picture.

This switch will only be used if a "symbol generator" (think graphics card) of the FO or the CPT fails. In this case he/she can regain instrumentation (EADI and ESHI) by switching to "both on left" or "both on right". The light is there to remind him, because obviously redundancy is lost in that case.

Cheers, Jan

[canadaclipper]

Thanks for your quick answer. Much appreciated.