# SDR CALA2026041415358

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2026
- Submitted: April 14, 2026
- Operation: Air carrier
- Aircraft: [N837UA](https://openairdocs.org/aircraft/N837UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1474
- Aircraft time: 71,099 hours, 32,006 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Condition: Dirty
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026041415358

## Discrepancy

CABIN RE-CIRCULATION FILTERS NEEDS TO BE REPLACE WITHIN 2 DAYS REF LOG# 8508734 CABIN RE-CIRCULATION FILTERS TO BE REPLACEWITHIN 2 DAYMM 05-51-10-200-801-C1 NO ODOR OBSERVED OR ABLE TS REF AO BE IDENTIFIED BY MX. RECIRC FILTERS REQUIRE REPLACEMENT WITHIN 2 DAYS PER AMM 05-51-10-200-801-C1. TOMC-APPROVAL FROM SC1ELBYC COMMENT TOMC APPROVED: QC REVIEWED. CONTROL: SOURCE DOCUMENT: TASK 05-51-1A: WITHIN 02 DAYS.HV U433304 REMOVED AND REPLACED RE-CIRC FILTERS PER AMM 21-20. OK FOR SVC TOMCQC REV PERFORMED

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