SDR ASAA2015083012961

Service difficulty report · Servo · Boeing 737890

Difficulty date: August 30, 2015
Submitted: September 1, 2015
Operation: Air carrier
Aircraft: N590AS
Make and model: Boeing 737890
Aircraft serial: 35687
Aircraft time: 29,404 hours, 8,955 cycles
System (JASC): 2230 · Auto Throttle System
Part: Servo
Part number: 305RAA1
Part serial: AS09165
Condition: Not Reported
Location: Autothrottle
Part time: 4,898 hours, 1,402 cycles
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

AUTOTHROTTLE WILL NOT ARM. ACFT GROUNDED. ACCOMPLISHED AUTOTHROTTLE SYSTEM OPS TEST, NO FAULTS NOTED, REF MM 22-31-00. DURING AUTOTHROTTLE SYS FAULT REVIEW FOUND 1 FLIGHT LEG WITH 24 INSTANCES OF MAINT MESSAGE 22-31501. AS PRECAUTION, REPLACED NR 1 AUTOTHROTTLE SERVO MOTOR, INSTALLATION TEST PASSED, REF MM 22-31-91.