# SDR YENA2023080700901

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2023
- Submitted: August 7, 2023
- Operation: Air carrier
- Aircraft: [N2156J](https://openairdocs.org/aircraft/N2156J), registered now
- Make and model: Airbus A321-271N
- Registry model: [Airbus A321-271N](https://openairdocs.org/model/airbus-a321-271n) (OpenAirDocs)
- Aircraft serial: 11342
- Aircraft time: 142 hours, 31 cycles
- System (JASC): [2163 · Cabin Temperature Sensor](https://openairdocs.org/jasc/2163)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: UK
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2023080700901

## Discrepancy

FLT#1524, LAX-JFK. (ETOPS) ' COND TRIM AIR SYS FAULT - CKPT TRIM VALVE ( COCKPIT/CABIN TRIM AIR VALVES ); ITEM ALREADY PLACED ON MEL LIST REF TO MDDR 518832.  PERFORMED BITE TEST OF TEMP CTL SYS. FOUND NO PREVIOUS OR PFR OF FAULTS. OK REF TSM 21-63-00-710-057-B. MDDR CLEARED. MX-4 UPDATED. PLACARD REMOVED.

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