SDR ASMF2019010900003

Service difficulty report · Autothrottle Sys · Boeing 7878

Difficulty date: October 27, 2018
Submitted: January 9, 2019
Operation: Air carrier
Aircraft: N967AM
Make and model: Boeing 7878
Aircraft serial: 35312
Aircraft time: 20,650 hours, 2,483 cycles
System (JASC): 2230 · Auto Throttle System
Part: Autothrottle Sys
Condition: Malfunctioned
Stage of operation: TX
How discovered: O
Nature of condition: S
Precautionary procedure: D

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

What was found

AIRCRAFT RETURNED TO PLATFORM DUE TO AUTOTHROTTLES DID NOT ENGAGE. MAINTENANCE PERSONNEL PERFORMED AUTOTHROTTLE SYSTEM OPERATIONAL TEST IAW FIM DMC-B787-A-31-90-F8-01A-421B-A PROCEDURE, SHOWING FAILURE CODES 22-20060 AND 22-20050; SO THE FIM DMC-B787-A-31-90-F08-01A-421B-A WAS PERFORMED, NO CONFIRMING FAILURE, TESTED CORRECT.

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