# SDR 97ZZZM562

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N477AU
- Make and model: Fokker F.28 MK4000
- Registry model: [Fokker F.28 MK4000](https://openairdocs.org/model/fokker-f-28-mk4000) (OpenAirDocs)
- Aircraft serial: 11226
- System (JASC): [2621 · Fire Bottle, Fixed](https://openairdocs.org/jasc/2621)
- Part: Fire Bottle
- Part number: 893456
- Condition: Depleted
- Location: Apu
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZM562

## Discrepancy

FLT 654 - CLT-ROA - ON CLIMB-OUT, THE APU FIRE WARNING LIGHT CAME ON AND BELL SOUNDED.  CAPTAIN FIRED ONE BOTTLE.  THE LIGHT DID NOT EXTINGUISH.  EMERGENCY WAS DECLARED.  FLIGHT RETURNED AND LANDED CLT WITHOUT FURTHER INCIDENT.  MAINTENANCE REPLACED THE FIRE SENSING ELEMENTS AND FIRE BOTTLE.  REFERENCE USAAF97034.

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