Service difficulty report · Servo · Boeing 737890

Difficulty date
September 29, 2011
Submitted
October 3, 2011
Operation
Air carrier
Aircraft
N569AS
Make and model
Boeing 737890
Aircraft serial
35184
Aircraft time
17,272 hours, 5,638 cycles
Part
Servo
Part number
305RAA1
Part serial
AS04603
Condition
Faulty
Location
Autothrottle Sys
Part time
17,272 hours, 5,638 cycles
Stage of operation
TO
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

A/T DISENGAGED ON TAKEOFF WHEN TOGA PRESSED COULD NOT GET A/T TO ENGAGE AT ANYTIME DURING FLIGHT. A/T FFR SHOWS NUMEROUS ASM 2 RATE MONITOR FAULTS MSG 22 31688. REPLACED ASM 2 REF 22 31 91. PERFORMED A/T CURRENT STATUS TEST AS REQ'D PER SAME MM.