Service difficulty report · Autothrottle Sys · Boeing 737990

Difficulty date
December 23, 2012
Submitted
December 26, 2012
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990
Aircraft serial
41731
Aircraft time
53 hours, 26 cycles
Part
Autothrottle Sys
Condition
Malfunctioned
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AUTOTHROTTLE WILL NOT ENGAGE. FYI - T/O DATA AT PUSH BACK CALLED FOR 27K MAX N1S 102. ACCOMPLISHED AUTOTHROTTLE BITE TEST REF AMM 22-31-00-710-801. ACCOMPLISHED DFCS BITE TESTS 32 & 49. ACCOMPLISHED HGS SENSOR TEST FOR FCC/AT. ALL TESTS PASSED GROUND VERIFICATION SUCCESSFUL. AC IS CAT IIIA AUTOLAND HGS QUALIFIED. MOVED LWMP PLACARD STATUS SCREW TO REFLECT SAME.