# SDR CALA2026030414301

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2026
- Submitted: March 4, 2026
- Operation: Air carrier
- Aircraft: [N36280](https://openairdocs.org/aircraft/N36280), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31598
- Aircraft time: 64,353 hours, 23,906 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026030414301

## Discrepancy

APU HAD A SLIGHT FUEL ODOR WHEN FUNNING PACKS WITH APU AS AIR SOURCE.  REQUESTING MEL 4901A.  OK TO PLACE APU ON MEL 4901A.  CURRENTLY UNABLE TO LOCATE SOURCE ON APU.  APU ON MEL FOR SLIGHT FUEL ODOR ON PACK START UP WITH APU AS SOURCE,   INSPECTED APU AND BOTH PACKS WITH NO DEFECTS NOTED,  UPON CLEARING MEL,  PERFORMED T/S IAW TSM 49-55 TASK 802, NO FAULTS FOUND AT THIS TIME.  RAN LT & RT PACKS ON FULL HOT FOR ONE HOUR IAW AMM 05-51-26-800-801-C1 STEP (E). NO FUMES NOTED.  REPLACED LT & RT RECIRC FILTERS AS PRECAUTION.

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