# SDR ASAA2019120931537

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 9, 2019
- Submitted: December 10, 2019
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 24,302 hours, 7,871 cycles
- System (JASC): [4930 · APU Engine Fuel and Control](https://openairdocs.org/jasc/4930)
- Part: Nozzle
- Part number: 38304161
- Condition: Failed
- Location: Apu Fuel Inject
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019120931537

## Discrepancy

APU TREND DATA SHOWS CT5ATP TEMP IS AT OR ABOVE THE THRESHOLD 605 DEGREES. GROUNDED - YES. REPLACED FUEL NOZZLES, P2, T2, PT, & DP SENSORS. LEAK CHECK GOOD. NO FAULTS. MONITORING CT5ATP CONTINUED. PER TECH SERVICES CT5ATP TEMP HAS RETURNED TO NORMAL.

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