# SDR UIEA00045

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2000
- Submitted: November 27, 2000
- Operation: Air carrier
- Aircraft: [N808MC](https://openairdocs.org/aircraft/N808MC), registered now
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21048
- Engine: Ge CF650C2
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Duct
- Condition: Leaking
- Location: Nr 4 Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA00045

## Discrepancy

MIA/BOG -ATB - FLT GT063/06 - ENGINE A-LOOP FIRE WARNING FLUCTUATED, B-LOOP READ 4-5 STEADY.  ENGINE SHUT DOWN AND FLIGHT RETURNED TO MIA.  MIA MAINTENANCE FOUND PRESSURE REGULATOR VALVE AND DUCT LEAKING.  REPLACED BOTH PRV, DUCT AND CLAMPS.  OPERATIONAL CHECK OF B-LOOP SATISFACTORY.  A-LOOP STILL SPIKES AND DEFERRED PER DDPG.  AIRCRAFT RELEASED FOR FLIGHT.  ADDITIONAL PART INFO:  PN 65B94813-2.  (X)

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