SDR ASMF20180927020

Service difficulty report · Monitor · Boeing 73776Q

Difficulty date: September 13, 2018
Submitted: September 27, 2018
Operation: Air carrier
Aircraft: N997AM
Make and model: Boeing 73776Q
Aircraft serial: 30283
Aircraft time: 54,135 hours, 29,577 cycles
System (JASC): 7732 · Engine Vibration Analyzer
Part: Monitor
Part number: 241280053013
Part serial: AA58208
Condition: Failed
Location: Rt Engine
Part time: 49,046 hours, 25,109 cycles
Stage of operation: TX
How discovered: O
Nature of condition: N
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 THAT DURING TAXING THE RT ENGINE VIBRATION REACHED 5.2 UNITS. MAINTENANCE PERSONNEL PERFORMED VIBRATION ANALYSIS IAW FIM 77-31 TASK 803 PROCEDURE, SHOWING FAILURE CODE 43 ON AVM. AVM WAS REPLACED IAW AMM 77-31-03, SHOWING FEWER THAN 4.0 UNITS WITHIN LIMITS, TESTED CORRECT.

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