# SDR ASAA2021042334667

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2021
- Submitted: May 4, 2021
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 53,676 hours, 15,725 cycles
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Indicator
- Condition: No Indication
- Location: Overheat Light
- Stage of operation: NR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021042334667

## Discrepancy

DURING OVHT/FIRE WARNING CHECK, ENGINE NO. 1 FIRE WARNING SWITCH DOES NOT ILLUMINATE IN 'B' CONFIGURATION. GROUNDED - YES. PERFORMED ENGINE FIRE DETECTION OPERATIONAL TEST PER B737-800 AMM 26-11-00-710-801. OPS CHECK GOOD AND BITE TEST ON THE ENGINE AND APU FIRE DETECTION CONTROL MODULE GOOD AT THIS TIME AND NO FAULTS PRESENT AT THIS TIME.

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