# SDR AALA202309080319

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 5, 2023
- Submitted: September 8, 2023
- Operation: Air carrier
- Aircraft: [N90024](https://openairdocs.org/aircraft/N90024), registered now
- Make and model: Airbus A319-115
- Registry model: [Airbus A319-115](https://openairdocs.org/model/airbus-a319-115) (OpenAirDocs)
- Aircraft serial: 6384
- Aircraft time: 24,758 hours, 11,356 cycles
- System (JASC): [2100 · Air Conditioning System](https://openairdocs.org/jasc/2100)
- Part: Thermostat
- Part number: 342B050000
- Condition: Defective
- Location: Zone 400 - Nac/P
- Stage of operation: DE
- 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/AALA202309080319

## Discrepancy

AIRCRAFT WAS GROUNDED: FUMES ONLY ON FLIGHT DECK DURING DESCENT AND INITIAL POWER REDUCTION AT EACH STEP DOWN. FLIGHT CREW TURNED OFF ENGINE #2 BLEED. FUMES DID NOT RE-OCCUR. ODOR SMELLED LIKE A HEATER USED FOR A 1ST TIME. MAINTENANCE FOUND THE #2 ENGINE FAN AIR VALVE THERMOSTAT SENSE LINE CHAFFED AND HAD A HOLE IN IT. MAINTENANCE REPLACED THE SENSE LINE PER AMM 36-11-13. (AALA202309083815) MAINTENANCE ALSO REPLACED #2 ENGINE FAN AIR VALVE THERMOSTAT 7170HM2 PER AMM 36-11-43. (AALA202309080319) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.