# SDR CALA2026092319687

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2026
- Submitted: September 23, 2026
- Operation: Air carrier
- Aircraft: [N37281](https://openairdocs.org/aircraft/N37281), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31599
- Aircraft time: 66,303 hours, 24,574 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: LD
- 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/CALA2026092319687

## Discrepancy

CREW REPORTS ODOR IN CABIN ON APPROACH AND LANDING TO SFO. LANDING WAS A BLEEDS OFF LANDING DUE TO MEL 2101A APPLIED.  APU BLEED ON, ENG BLEEDS OFF, LT PACK OFF, RT PACK ON, DURING DESCENT AT 10K FT IAW MM 05-51-26-800-801-C1, STEP 1C(2)(D).  INSPECTED APU COMPARTMENT & TAILPIPE, FOUND NO DISCREPENCIES. APU OIL CORRECT LEVEL. INSPECTED RT PACK, FOUND NO DISCREPENCIES. OPS PACKS WITH APU BLEED FOR 5 MIN., NO ODOR NOTED. CONTINUED OPS CHK WITH ENGINE BLEEDS ON AT DIFFERENT POWER SETTINGS, NO ODOR PRESENT, NO PREVIOUS HISTORY CONTINUED OPS CHK WITH ENGINE BLEEDS ON AT DIFFERENT POWER SETTINGS, NO ODOR PRESENT,  ACCOMPLISHED MM 05-51-26-800-801-C1 STEP 1C(1) (A-F), & 1C(2) (A-C). NO SIGNS, OR BURNING OF SMOKE ODOR.

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