# SDR ASMF2016072600007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2016
- Submitted: July 26, 2016
- Operation: Air carrier
- Aircraft: [N997AM](https://openairdocs.org/aircraft/N997AM), registered now
- Make and model: Boeing 737-76Q
- Registry model: [Boeing 737-76Q](https://openairdocs.org/model/boeing-737-76q) (OpenAirDocs)
- Aircraft serial: 30283
- Aircraft time: 46,106 hours, 25,748 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Engine
- Condition: Making Metal
- Location: Apu
- Component: Apu
- Component part number: 38007021
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF2016072600007

## Discrepancy

DURING TRANSIT CHECK, THE APU SHUTDOWN SUDDENLY, THE APU FAIL LIGHT TURNED ON AND FAILURE CODE 49-94299. MAINTENANCE PERSONNEL PERFORMED FIM 49-90 TASK 809 PROCEDURE, REVISION TO CHIP DETECTOR IAW AMM 49-91-81-200-801, DETECTING SILVER COLOR PARTICLES, THIS CONDITION WAS NOT PERMITTED; SO THE APU WAS DEFERRED IAW MEL 49-1 CAT C. AT MEX, THE APU WAS REPLACED IAW AMM 49-11-00, TESTED CORRECT AND THE REPORT WAS CLOSED.

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