# SDR 2021F00345

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2021
- Submitted: December 16, 2021
- Operation: General aviation
- Aircraft: XAAMA
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 36700
- Aircraft time: 36,638 hours, 13,314 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Unknown
- Part number: 144187000011
- Part serial: EM590779F
- Condition: Vibration
- Location: Lt Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2021F00345

## Discrepancy

LEFT ENGINE REACHED 4.1 UNITS OF VIBRATION, CAPTAIN REPORTED THAT DURING CLIMB, THE LEFT ENGINE REACHED 4.1 UNITS OF VIBRATION; SO FLIGHT CREW ACCOMPLISHED THE QRH 7.26 PROCEDURE AND THE VIBRATION WAS STABILIZED IN 3.5 UNITS. MAINTENANCE PERSONNEL PERFORMED A LEFT ENGINE VIBRATION, VIBRATION HIGH SYSTEM CHECK IAW FIM 71-05 TASK 808 PROCEDURE, NO DAMAGES WERE FOUND; SO TRIM BALANCE WAS PERFORMED IAW AMM 71-00-00 TASK 71-00-00-750-803 WITH 0.4 UNITS AND 96% N2 AND TEST NUMBER 7 VIBRATION SURVEY WAS PERFORMED IAW AMM 72-00-00, TESTED CORRECT.

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