# SDR AALA20190705004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2019
- Submitted: July 8, 2019
- Operation: Air carrier
- Aircraft: [N998AN](https://openairdocs.org/aircraft/N998AN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7509
- Aircraft time: 8,360 hours, 3,143 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Part number: D2121001600045
- Condition: Blown
- Location: E&E Bay
- 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/AALA20190705004

## Discrepancy

AIRCRAFT WAS GROUNDED: CREW REPORTED HIGH CABIN RATE OF CLIMB AND UNABLE TO PRESURIZE. MAINTENANCE FOUND BLOWN DUCT IN FWD AVIONICS COMPARTMENT AFT OF EXTRACTION FAN. REMOVED AND REPLACED DUCT IAW AMM 21-26-42. PRESSURE CHECKED GOOD AT THIS TIME.

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