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Old 10th October 2008, 20:42   #1 (permalink)
goksunkurkcu
 
Join Date: Aug 2008
Location: turkey
Age: 27
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737 stabilizer trim

why is there a 0.5 unit difference in the stabilizer trim wheel of captain's and first officer's? all help is welcomed!!!

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Old 11th October 2008, 01:00   #2 (permalink)
Warning Toxic!
Disgusted of Tunbridge
 
Join Date: Jan 2005
Location: Hampshire, UK
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The left and right side indicators have got out of alignment! They are not really accurate to more than about half a division anyway.
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Old 11th October 2008, 09:45   #3 (permalink)
 
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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.
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Old 11th October 2008, 10:07   #4 (permalink)
 
Join Date: Mar 2007
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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!
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Old 11th October 2008, 11:02   #5 (permalink)
 
Join Date: Apr 2004
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B737CL
Horizontal Stabilizer Trim System Test (TASK 27-41-00-735-013)
Quote:
(3) Do the stabilizer manual travel limits test:
····(a) Turn the captain's stabilizer trim wheel counterclockwise until the stabilizer trim jackscrew comes to its limit.
·········1) Make sure the B dimension is 45.84 +/-0.05 inches.
·········2) Make sure the two stabilizer trim indicators show 0.0 +/-0.5 units of trim.
····(b) Turn the captain's stabilizer trim wheel clockwise until it comes to its limit.
·········1) Make sure the B dimension is 21.32 +/-0.05 inches.
·········2) Make sure the two stabilizer trim indicators show 17.0 +/-0.5 units of trim.
····(c) Make sure the difference between the two position indicators is less than 0.5 unit of trim at all positions.
/Quote
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Old 12th October 2008, 15:12   #6 (permalink)
Flight Detent
 
Join Date: Jan 2002
Location: Brisbane, Australia
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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...

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Old 12th October 2008, 15:25   #7 (permalink)
A37575
 
Join Date: Apr 2005
Location: Australia
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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

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