# SDR 97ZZZX4746

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N464AT
- Make and model: Boeing 737-2L9
- Registry model: [Boeing 737-2L9](https://openairdocs.org/model/boeing-737-2l9) (OpenAirDocs)
- Aircraft serial: 21278
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Warning Light
- Part number: 693735211
- Condition: Malfunctioned
- Location: Cargo Door
- Stage of operation: CL
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX4746

## Discrepancy

ABL - FLT 501 - AFTER T/O AT 8,000 FEET, NR 2 T/R C/B TRIPPED.  (BLOWER NORMAL, NR 1 BUS T/R).  CABIN STARTED TO CLIMB AT 2,000 FEET/MIN.  DOOR ANNUNCIATOR 'AFT CARGO PIT' WARNING LIGHT CAME ON.  PILOT RETURNED TO ALB.  MECH RESET C/B'S, RAN NR 1 ENG AND LOADED GEN.   C/B FOR NR 1 T/R TRIPPED AGAIN.  SECURED NR 1 GEN AND PUT APU ON LINE; LOADED UP SYS ELECTRICALLY AND PROBLEM DID NOT RETURN.  THIS INDICATED NR 1 GEN FAILED.  VERIFIED APU HAS FUEL HEATER AND DEFERRED NR 1 ENG GEN (MEL 24-1).  AFT CARGO PIT WARNING SYS WAS INDICATION PROBLEM ONLY;   ITEM DEFERRED (MEL 52-3).  DOOR VERIFIED CLOSED AND LOCKED.  REMOVED AND REPLACED NR 1 GEN AND DOOR WARNING ANNUNC.  CLEARED MEL.  REF:  OPER CNTRL NR ZZDA2424497.

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