# SDR ASAA2019011127756

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2019
- Submitted: January 15, 2019
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 38,235 hours, 11,368 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Control Module
- Part number: 6937307300
- Part serial: D02873
- Condition: Failed
- Location: Fire Detection
- Part time: 62,084 hours, 31,561 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019011127756

## Discrepancy

UPON NR 2 ENGINE SHUTDOWN WHEN START LEVER WAS PLACED IN CUTOFF, THE NR 2 ENGINE RAN FOR 10-12 SEC. BEFORE SLOWLY ROLLING BACK TO OFF. THE NR 2 ENG VALVE CLOSED FUEL VALVE CONTINUED TO BE ILLUMINATED BRIGHT BLUE AND STAYED ILLUMINATED BRIGHT BLUE. GROUNDED - YES. REMOVED AND REPLACED ENGINE/APU FIRE DETECTION CONTROL MODULE, ALL TESTS EXCEPT TWO PASSED. THE NR 2 ENGINE STOPPED PROPERLY USING START LEVER AND NR 2 FIRE HANDLE. ALL MAINTENANCE TESTS COMPLETED PER AMM 26-00-01-400-801 AND AMM 26-21-730-801.

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