Service difficulty report · Autothrottle Sys · Boeing 737890

Difficulty date
November 13, 2010
Submitted
November 16, 2010
Operation
Air carrier
Aircraft
N590AS
Make and model
Boeing 737890
Aircraft serial
35687
Aircraft time
10,629 hours, 3,313 cycles
Part
Autothrottle Sys
Condition
Malfunctioned
Location
Engine
Stage of operation
CL
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

AUTO THROTTLE DISENGAGED ON TAKEOFF. A/T BITE INFLT FAULTS LOGGED 3 OCCURRENCES OF MAINT MSG22-31687 ASM1 RATE MONITOR FAULT ON LEGS 01 AND 03. PERF A/T CURRENT STATUS BITE TEST REF FIM 22-31 TASK 801 ASM TEST (MULTIPLE TIMES) REF FIM 22-31 TASK 805 AND DFCS LRU REPLACEMENT TEST FOR A/T REF FIM 22-11 TASK 802 ALL TESTS PASSED. NO FAULTS NOTED.