SDR IPXA2018040328112

Service difficulty report · Transmitter · Boeing 75724APF

Difficulty date: April 3, 2018
Submitted: April 4, 2018
Operation: Air carrier
Aircraft: N461UP
Make and model: Boeing 75724APF
Aircraft serial: 28265
Aircraft time: 33,388 hours, 16,308 cycles
System (JASC): 7730 · Engine Ignition Analyzer System
Part: Transmitter
Condition: False Activation
Location: Engine Vibration
Stage of operation: AP
How discovered: O
Nature of condition: E
Precautionary procedure: E

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

What was found

DURING FLIGHT, SHUTDOWN THE LT ENGINE, VIBRATION READS 5.0, ENGINE INDICATIONS NORMAL. VIBRATION REMAINED ABOVE 2.5 WITH THRUST LEVEL RETARDED TO IDLE. THE ENGINE WAS SHUT DOWN . NO VIBRATION WAS FELT. CHECKED CHIP DETECTORS. IAW MM 78-00-00/601. R & R THE LT VIBRATION TRANSMITTER IAW MM 77-31-01-404-022.

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