SDR UIEA2020072001585

Service difficulty report · Indication Sys · Boeing 76736N

Difficulty date: July 16, 2020
Submitted: July 20, 2020
Operation: Air carrier
Aircraft: N1093A
Make and model: Boeing 76736N
Aircraft serial: 30111
Aircraft time: 81,891 hours, 11,829 cycles
System (JASC): 7732 · Engine Vibration Analyzer
Part: Indication Sys
Condition: False Indication
Location: Eng Vibration
Stage of operation: TX
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

DURING TAKEOFF AND CLIMBOUT THE LEFT VIBRATION INDICATOR PEGGED AT 5.0 UNITS FOR A COUPLE SECONDS THEN WENT AWAY, THEN CAME BACK, THEN WENT AWAY. PERFORMED TROUBLESHOOTING IAW FIM 71-05, FAULT TREE 852, AND PERFORMED AN ENGINE VIBRATION SURVEY IAW AMM 71-00-00/501 AND VIB FOUND NORMAL.

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