# SDR ABXA9800110

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N812AX
- Make and model: Doug DC-8-63F
- Registry model: [Doug DC-8-63F](https://openairdocs.org/model/mcdonnell-douglas-dc-8-63f) (OpenAirDocs)
- Aircraft serial: 46126
- Engine: Pwa JT3D7
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: D5020
- Condition: Defective
- Location: Nr 4 Engine
- Stage of operation: CR
- Nature of condition: N
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA9800110

## Discrepancy

NR 4 ENGINE FIRE WARNING BELL SOUNDED INTERMITTENTLY.  ALL FOUR ENGINES WERE TESTED.  NR 4 WOULD NOT TEST.  NR 4 ENGINE WAS SECURED.  CSD WAS DISCONNECTED AND NR 4 FIRE BOTTLE WAS DISCHARGED.  NR 4 ENGINE FIRE LOOP ELEMENT WAS FOUND TO BE DEFECTIVE.  REPLACED FIRE LOOP ELEMENT IAW DC8 MM 26-10-1.

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