# SDR CALA2026042315646

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2026
- Submitted: April 23, 2026
- Operation: Air carrier
- Aircraft: [N38479](https://openairdocs.org/aircraft/N38479), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 62817
- Aircraft time: 28,114 hours, 10,666 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: CL
- 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/CALA2026042315646

## Discrepancy

CHEMICAL ODOR TAKEOFF AND CLIMB  RETURNED  BRIEFLY DURING DESCEN T DEBRIEF CAPT/FO ODOR WAS IN FLIGHT DECK. PERFORM INITIAL EVAL. REF: AMM 21-00 TASK 806. NO EVIDENCE OF ANY BIRD STRIKES. FOUND 'A' SYST HYD OVER SERVICED. MOVE EXCESS HYD FLUID FROM A.  A AT 96,  B AT 96. IAW SUB TASK 12-12-00-610-801. RAN BOTH PACKS IN ALL POSITIONS. NO ODOR NOTED. NO HISTORY LAST 90 DAYS FOR ATA CHAPTERS 21,36 OR 71. WILL CHK WITH TOMC IF HI POWER RUN IS NEEDED.   THIS A/C DID HAVE ENG WASH DONE ON RON LAST NIGHT IN BNA (21APR26    21APR26   BNA ?0479  INSP-WASH E1 *EXTN X1*) SDR REF LP 8642630, NO ODORS NOTICED DURING RUNS

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