Mach Trim Fail light
Could some one please clarify a point in regards to the pre flight checks on the 737NG. More specifically the Mach Trim Fail light
The Ops Manual (dated March 28th 2005 NP.21.11) states that the light should be extinguished whilst carrying out the pre flight checks (with no mention of the Electric Hydraulics Pumps)
Asking around, the thought is that the light will only be extinguished once the Electric Hydraulics Pumps have been switched on.
This would seems to be the case in previous Ops manuals where the pumps are switched on prior to the walk round.
Unfortunately I could not find the place where it specifies the pumps are to be switched on within the new procedures
Any thoughts on this matter would be greatly appreciated.
Thanks.