# SDR AALA202603024210

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2026
- Submitted: March 2, 2026
- Operation: Air carrier
- Aircraft: [N161AA](https://openairdocs.org/aircraft/N161AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7085
- Aircraft time: 29,683 hours, 11,782 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Part number: D2121001600041
- Condition: Blown
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202603024210

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAS DUE TO THE FLIGHT CREW REPORTING A VENT SKIN VALVE FAULT AFTER TAKEOFF. THE FLIGHT CREW ACCOMPLISHED THE ECAM PROCEDURE WHICH LIMITED THE AIRCRAFT TO 10000 FEET ALTITUDE. THE AIRCRAFT LANDED SAFELY AT LAS WITHOUT FURTHER INCIDENT.  MAINTENANCE FOUND AVIONICS COOLING DUCT BLOWN IN THE E&E BAY AND REPLACED IT PER AMM 21-26-41 (AALA202602284210) MAINTENANCE ALSO REPLACED THE SKIN AIR OUTLET VALVE PER AMM 21-26-53. (AALA202603027466) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

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