# SDR ASAA2023073044327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2023
- Submitted: August 3, 2023
- Operation: Air carrier
- Aircraft: [N594AS](https://openairdocs.org/aircraft/N594AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35191
- Aircraft time: 54,641 hours, 16,179 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023073044327

## Discrepancy

APU FAILED TO START, FAULT LIGHT ILLUMINATED. GROUNDED - YES. UNDER THE AUTHORIZATION OF SEAMC PHIL, MEL 49-99A CLEARED. T/S NOTES 7/30/23: SERVICED OIL APU. ATTEMPTED START. NO ROTATION. MAINTENANCE MSG 49-41012 PRESENT. STEVE LARSON 55146 07/30/2023. PERFORMED RESET OF AIRCRAFT AND STARTED APU. APU PLACED ON DEFERRAL 49-99A  APU CONTINUOUS OPERATION. SEAMC ARNIE AUTHORIZED. CN: 30051594. PLACCARD INSTALLED. REF LOGPAGE 60556949 FOR APU OIL SERVICE. T/S NOTES 8/2/23: ACARS MESSAGE AC- 594AS FLT- 3 FROM - DCA TO- SEAA/C: 594AS CSSP 380 MELOKAY TO RMV MEL

---
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.