# SDR ASAA2014050607705

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2014
- Submitted: May 7, 2014
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 28,585 hours, 8,539 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Nozzle
- Part number: 38304161
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014050607705

## Discrepancy

APU CT5ATP EGT DATA SHOWS EGT IS TRENDING TOWARDS ESTABLISHED THRESHOLD. ACFT GROUNDED.  REPLACED 10 EA APU FUEL NOZZLES AND SHROUD IAW: MM 49-31-14-400-801, STEP F 1, A THROUGH G.  ACCOMPLISHED STEP G: FUEL NOZZLE INSTALLATION TEST IAW MM 49-31-14-400-801. NO LEAKS NOTED.

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