# SDR ASAA2014072208647

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2014
- Submitted: July 25, 2014
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 10,017 hours, 2,899 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Warning Message
- Condition: False Activation
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014072208647

## Discrepancy

MAINTENANCE MESSAGE 49-37168 ON CURRENT STATUS PAGE.  ACFT GROUNDED. VISUALLY INSPECTED APU HARNESS AND AC WIRING.  DISCONNECTED AND INSPECTED P22 FCU.  MEASURED RESISTANCE PINS 4 TO 5 = 110 OHMS.  RECONNECTED P22 AND REACCOMPLISHED APU BITE-FAULT CLEARED.

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