# SDR AALA202603163323

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2026
- Submitted: March 16, 2026
- Operation: Air carrier
- Aircraft: [N871AY](https://openairdocs.org/aircraft/N871AY), registered now
- Make and model: Boeing 787-8
- Registry model: [Boeing 787-8](https://openairdocs.org/model/boeing-787-8) (OpenAirDocs)
- Aircraft serial: 65991
- Aircraft time: 21,384 hours, 3,130 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Humidifier
- Condition: Odor
- Location: Zone 100
- Stage of operation: CR
- 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/AALA202603163323

## Discrepancy

AIRCRAFT WAS GROUNDED: AT CRUZE FL400 APPROX 1 HOUR INTO THE FLIGHT, CA AND FO VOCALIZED UNKNOWN ODOR IN FLIGHT. MAINTENANCE PERFORMED GROUND TEST OF FLIGHT DECK HUMIDIFIER, AMM 21-71-02, HAD A SLIGHT ODER. REMOVED AND REPLACED HUMIDIFIER PAD, RAN TEST-NO ODERS, REF AMM 21-71-04. C/W SOF JC 78L00021001. ODER WAS CONTAINED TO FD ONLY.

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