# SDR CALA2016033195236

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2016
- Submitted: March 31, 2016
- Operation: Air carrier
- Aircraft: [N218UA](https://openairdocs.org/aircraft/N218UA), registered now
- 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)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Vibration
- Location: Nr 1
- Stage of operation: IN
- How discovered: O
- Nature of condition: E, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2016033195236

## Discrepancy

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.

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