# SDR ASAA2013102296225

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2013
- Submitted: October 24, 2013
- Operation: Air carrier
- Aircraft: [N513AS](https://openairdocs.org/aircraft/N513AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35192
- Aircraft time: 19,411 hours, 6,040 cycles
- System (JASC): [4970 · APU Indicating System](https://openairdocs.org/jasc/4970)
- Part: Module
- Part number: 38762871
- Part serial: GE160
- Condition: Failed
- Location: Apu
- Part time: 4,268 hours, 7,394 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013102296225

## Discrepancy

DURING PRESSURIZATION CHECK, A LOUD NOISE WAS HEARD FROM APU AIR INLET.  ACFT  GROUNDED.  ACCOMPLISHED CHECK OF APU AND ACFT WIRING AND RESISTANCE CHECKS OF SAME. REF FIM TASK 49-70, TASK 806. ALL CHECKED OK. REPLACED DATA MEMORY MODULE. INSTALLATION TEST PASSES. NO CURRENT STATUS FAILURES. REF AMM 49-72-11/401.

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