SDR UIEA2020102902334

Service difficulty report · Accelerometer · Boeing 76736N

Difficulty date: October 28, 2020
Submitted: November 2, 2020
Operation: Air carrier
Aircraft: N1093A
Make and model: Boeing 76736N
Aircraft serial: 30111
Aircraft time: 82,583 hours, 12,056 cycles
Engine: Ge CF680C2B7F
System (JASC): 7732 · Engine Vibration Analyzer
Part: Accelerometer
Part number: CA115M101
Part serial: VBRBE865
Condition: Malfunctioned
Location: Lt Engine
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

IN FLIGHT LEFT VIB INDICATOR ERRATIC INDICATIONS FROM .5-5.0 NO ACTUAL VIB FELT. ALL OTHER INDICATIONS NORMAL. TRANSFERRED TO MDDR 136877, IAW DDG 77-31-01 CAT "C", DUE 08NOV20. INSTALLED ALTERNATE/EXTERNAL NR 1 ACCELEROMETER, IAW AMM 77-31-01 (LT ENGINE). PERFORMED OPERATIONS CHECK, IAW AMM 77-31-00. OPERATIONS CHECK GOOD. THIS CLEARS DMI 136877. PLACARD REMOVED, MCC NOTIFIED.

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