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goksunkurkcu
10th Oct 2008, 19:42
why is there a 0.5 unit difference in the stabilizer trim wheel of captain's and first officer's? all help is welcomed!!!

Rainboe
11th Oct 2008, 00:00
The left and right side indicators have got out of alignment! They are not really accurate to more than about half a division anyway.

goksunkurkcu
11th Oct 2008, 08:45
are these indicators out of alignment in all 737 fleet? and also it writes in our sop that there's a 0.5 unit difference and the captain's side must be the one that should be set correctly.

CAT1 REVERSION
11th Oct 2008, 09:07
It is my understanding (737-300) that the F/O's side is the master side and if there is any miss-match the F/O's side should be set to required trim! (within limits of course!)........

I stby to be corrected!

IFixPlanes
11th Oct 2008, 10:02
B737CL
Horizontal Stabilizer Trim System Test (TASK 27-41-00-735-013)
Quote:
(3) Do the stabilizer manual travel limits test:
ииии(a) Turn the captain's stabilizer trim wheel counterclockwise until the stabilizer trim jackscrew comes to its limit.
иииииииии1) Make sure the B dimension is 45.84 +/-0.05 inches.
иииииииии2) Make sure the two stabilizer trim indicators show 0.0 +/-0.5 units of trim.
ииии(b) Turn the captain's stabilizer trim wheel clockwise until it comes to its limit.
иииииииии1) Make sure the B dimension is 21.32 +/-0.05 inches.
иииииииии2) Make sure the two stabilizer trim indicators show 17.0 +/-0.5 units of trim.
ииии(c) Make sure the difference between the two position indicators is less than 0.5 unit of trim at all positions.
/Quote

Flight Detent
12th Oct 2008, 14:12
Exactly...our B737-700s FCOM quotes a maximum of 0.5 units difference, and doesn't refer to either one specifically for trim setting!

Cheers...FD...:)

A37575
12th Oct 2008, 14:25
If the FCOM or FCTM makes no mention of which stab trim should be set as a master then there is no master. Amazing how chief pilots come up with these little gimmicks and opinion becomes fact