# SDR HALA2018071600322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2018
- Submitted: July 17, 2018
- Operation: Air carrier
- Aircraft: [N399HA](https://openairdocs.org/aircraft/N399HA), registered now
- Make and model: Airbus A330-243
- Registry model: [Airbus A330-243](https://openairdocs.org/model/airbus-a330-243) (OpenAirDocs)
- Aircraft serial: 1496
- Aircraft time: 20,094 hours, 3,131 cycles
- System (JASC): [7530 · Compressor Bleed Control](https://openairdocs.org/jasc/7530)
- Part: Control Unit
- Part number: 43753390001
- Part serial: 13469
- Condition: Defective
- Location: Vsv
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HALA2018071600322

## Discrepancy

ETOPS SIGNIFICANT SYSTEM - ENG 2 CTL SYS FAULT. PERFORMED TSM 75-33-00-810-808-A BETWEEN STEPS 4A(2)THRU(4)(C)1. CONTINUITY AND INSULATION RESISTANCE CHECK OK. PERF TSM 75-33-00-810-808-A1-4A(1) AND STEP 5 NR 2 ENGINE VSV CTL UNIT REQUIRES REPLACEMENT. REPLACED VSV CTL UNIT PER AMM 75-33-51-400-801-A. LEAK AND OPS CHECK DUE. LEAK AND OPS CHK GOOD PER AMM 71-00-00-700-827-A. 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.