Service difficulty report · Autothrottle Sys · Boeing 737890

Difficulty date
September 3, 2012
Submitted
September 6, 2012
Operation
Air carrier
Aircraft
N596AS
Make and model
Boeing 737890
Aircraft serial
35688
Aircraft time
16,610 hours, 5,304 cycles
Engine
Cfmint CFM567B27
Part
Autothrottle Sys
Condition
Malfunctioned
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

AUTO THROTTLES WILL NOT ENGAGE. ACFT GROUNDED. PERFORMED A/T INFLT FAULTS - SHOWS A ASM2 RATE MONITOR FAULT. PERFORMED FIM 22-31 TASK 805. A/T BITE PROCEDURES CURRENT STATUS AND A/T SERVO TEST GOOD NUMEROUS TIMES. IAW FIM, INTERMITTENT FAULT. NO HISTORY LAST 90 DAYS.