SDR 02092301

Service difficulty report · Engine · Boeing 75728A

Difficulty date: September 20, 2002
Submitted: September 23, 2002
Operation: Air carrier
Aircraft: N551NA
Make and model: Boeing 75728A
Aircraft serial: 25621
Aircraft time: 46,523 hours, 13,157 cycles
Engine: Rroyce RB211535E4
Engine time: 35,809 hours, 10,251 cycles
System (JASC): 7732 · Engine Vibration Analyzer
Part: Engine
Part number: RB211535E4
Part serial: 30828
Condition: Vibrates
Location: Rt. Eng
Part time: 35,809 hours, 10,251 cycles
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

At FL 370, Rt. Eng. indicated 2.6-2.7 vib., aircraft returned to LAS. Further inspection revealed no defects as per RB211 M/M 72-31-13. (A tap test, blade lube, and power run were performed as per the noted M/M ref. Ops check good as per M/M Ref. noted. No other defects were noticed, aircraft was returned to service.

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