# SDR ABXA9800432

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N812AX
- Make and model: Doug DC-8-62
- Registry model: [Doug DC-8-62](https://openairdocs.org/model/mcdonnell-douglas-dc-8-62) (OpenAirDocs)
- Aircraft serial: 46126
- Engine: Pwa JT3D7
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: 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/ABXA9800432

## Discrepancy

FIRE WARNING ON NR 4 ENGINE.  SECURED ENGINE AND DISCHARGED FIRE BOTTLE.  MASTER FIRE WARNING CAME ON MOMENTARILY WITH NO LIGHT IN ANY LEVER OR ON FLIGHT ENGINEER PANEL.  TESTED EACH ENGINE FIRE WARNING SYSTEM, NR 4 ENGINE WOULD NOT TEST. MASTER WARNING FLASHED ON AND OFF.  AFTER ENGINE WAS SECURED FIRE WARNING TESTED OK.  FOUND BROKEN PIN IN NR 4 LOWER LOOP CONNECTOR.  REPLACED LOWER LOOP.  FIRE WARNING TESTED GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.