# SDR YENA2022021000054

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 8, 2022
- Submitted: February 10, 2022
- Operation: Air carrier
- Aircraft: [N4058J](https://openairdocs.org/aircraft/N4058J), registered now
- Make and model: Airbus A321-271N
- Registry model: [Airbus A321-271N](https://openairdocs.org/model/airbus-a321-271n) (OpenAirDocs)
- Aircraft serial: 10619
- Aircraft time: 1,212 hours, 191 cycles
- System (JASC): [2163 · Cabin Temperature Sensor](https://openairdocs.org/jasc/2163)
- Part: None
- Condition: None
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2022021000054

## Discrepancy

(ETOPS) FLT # 20, LHR-JFK. TEMPERATURE IS DROPPING TO 60 IN ALL ZONES WHEN PACK IS ON LOW OR MEDIUM . INCREASES TO SELECTED TEMPERATURE ON HIGH; PERFORMED OPS TEST OF COCKPIT + CABIN TEMP CONTROL WITH CFDS/MCDU IAW AMM 21-63-00-710-004-A TEST PASSED. NO FAULTS NOTED. ABLE TO CONTROL CABIN TEMP WITH NO ISSUES. NO FAULTS REPORTED BY THE MCDU IN THE LAST LEG + PREVIOUS LEG REPORTS. NO CLASS 3 FAULTS. PER TSM 21-63-00-810-822-A PERFORMED OPS CHECK OF TEMP CTRL WITH MCDU PER AMM 21-60-00-710-004. NO FAULTS FOUND. ALL OPERATION + INDICATIONS NORMAL. ABLE TO CONTROL + VERIFY TEMPERATURES. TEMP CTL TEST PASSED. LAST LEG + PREVIOUS LEG REPORTS INDICATE NO FAULT. ALL INDICATED PRESSURES + TEMPS NORMAL (SUPPLEMENTAL FOR ADDITIONAL INFORMATION AND TO PROBLEM DESCRIPTION)

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