What was found
HEAVY VIBRATION 5 HRS INTO FLIGHT. SPARKS OBSERVED BY DEADHEADING PILOTS FROM TAIL CONE. ALL ENG PARAMETERS DISPLAY NORMAL ON EICAS, HOWEVER, WHEN POWER REDUCED TO 65% N1 VIBRATION CEASED. REPLACED NR 1 ENG IAW AMM 71-00-02 PG 401.
- Difficulty date
- March 31, 2016
- Submitted
- March 31, 2016
- Operation
- Air carrier
- Aircraft
- N218UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30222
- Aircraft time
- 64,346 hours, 7,621 cycles
- Engine
- Pwa PW40903
- Engine time
- 44,764 cycles
- System (JASC)
- 7200 · Engine (Turbine/Turboprop)
- Part
- Engine
- Condition
- Vibration
- Location
- Nr 1
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- E, B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.