# SDR HALA20240812220

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2024
- Submitted: August 12, 2024
- Operation: Air carrier
- Aircraft: [N380HA](https://openairdocs.org/aircraft/N380HA), registered now
- Make and model: Airbus A330-243
- Registry model: [Airbus A330-243](https://openairdocs.org/model/airbus-a330-243) (OpenAirDocs)
- Aircraft serial: 1104
- Aircraft time: 56,903 hours, 9,361 cycles
- Engine: Rroyce RB211TRENT77
- Engine time: 20,756 hours, 3,563 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Vibrates
- Stage of operation: CR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HALA20240812220

## Discrepancy

ETOPS - INFO TO MX: DURING LEVEL OFF FL390 ADV MESSAGE N1 VIBRATION PEAKED AT 4.2 UNITS. IN CRUISE DECREASED TO 1.2. DURING ENROUTE CLIMB VIB1 4.7 UNITS. PERFORMED SINGLE SHOT TRIM BALANCE SOLUTION PER POWER PLANT ENGINEERING, REMOVE TRIM BALANCE BOLTS INSTALLED AT POSITIONS 8, 9, 10, AND 11 AND INSTALLED STANDARD SCREWS (PN PSC738-6413) AT POSITIONS 8, 9, 10 AND 11 PER AMM 71-00-00-700-848-A STEP 4.C AND 4.D. ACCOMPLISHED ENGINE IDLE RUN. NO FAULTS NOTED. OK FOR SVC

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.