# SDR HALA0600608

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 22, 2006
- Submitted: August 23, 2006
- Operation: Air carrier
- Aircraft: N586HA
- Make and model: Boeing 767-300
- Registry model: [Boeing 767-300](https://openairdocs.org/model/boeing-767-300) (OpenAirDocs)
- Aircraft serial: 24259
- Aircraft time: 77,842 hours, 14,748 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Check Valve
- Part number: 3230303
- Part serial: 769
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HALA0600608

## Discrepancy

ETOPS SIGNIFICANT SYSTEM, APU AUTO SHUT DOWN, INTERROGATED ECU FOUND REVERSE FLOW FAULT.  PER FIM 49-11-00 APU CHECK VALVE BAD , REPLACED APU CHECK VALVE PER M/M 36-11-11.

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