Service difficulty report · Autothrottle Sys · Boeing 737890

Difficulty date
June 15, 2013
Submitted
June 18, 2013
Operation
Air carrier
Aircraft
N536AS
Make and model
Boeing 737890
Aircraft serial
35203
Aircraft time
5,694 hours, 1,640 cycles
Part
Autothrottle Sys
Condition
Inoperative
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AUTOTHROTTLES WILL NOT STAY ENGAGED. ACFT GROUNDED. COULD NOT DUPLICATE, GROUND FUNCTIONAL TEST OK. A/T FAULT REVIEW LOGGED NR 1 ASM FAULT NR 22-31687 ON ONLY 1 FLT LEG OUT OF 40. ACCOMP FIM 22-32/819, A/T CURRENT STATUS CK & TORQUE CK NORMAL. ALSO ACCOMP SEVERAL TIMES SERVO MOTOR TEST REF MM22-31-00 STEP I, TEST NORMAL. NO HISTORY 30 DAYS.