# SDR AMTA200600377

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 2, 2006
- Submitted: June 9, 2006
- Operation: Air carrier
- Aircraft: N550TZ
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32584
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Switch
- Part number: 38760483
- Condition: Unserviceable
- Location: Apu
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AMTA200600377

## Discrepancy

APU FAULT LIGHT ILLUMINATED AND APU SHUTDOWN.  PERFORMED BITE CHECK ON APU ECU AND READ (FILTER SW (GEN))LIGHT.  IAW FIM, REMOVED AND REPLACED DELTA P SWITCH IAW MM.  NO FAULTS NOTED.  (K)

---
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.