# SDR ASAA2023091145081

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2023
- Submitted: September 13, 2023
- Operation: Air carrier
- Aircraft: [N978AK](https://openairdocs.org/aircraft/N978AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43348
- Aircraft time: 4,659 hours, 1,365 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: TX
- 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/ASAA2023091145081

## Discrepancy

APU FAULT ON TAXI IN. LIGHT CLEARED WHEN APU SWITCH TURNED OFF. GROUNDED - YES. (RESOLVED ON W/O: 1969292 TASKCARD: N/R-00001 ) PERFORMED INITIAL EVALUATION OF IFIM 49-41254. FAULT INITIALLY SHOWED ACTIVE THEN CLEARED. STARTED APU MULTIPLE TIMES WITH NO DEFECTS NOTED. NO HISTORY 90 DAYS. CLEARS MEL 49-11-01. PLACARD REMOVED. SEAMC ASHRUF NOTIFIED.

---
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.