# SDR ABXA2023041152

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2023
- Submitted: April 11, 2023
- Operation: Air carrier
- Aircraft: [N651GT](https://openairdocs.org/aircraft/N651GT), registered now
- Make and model: Boeing 767231
- Aircraft serial: 22570
- Aircraft time: 89,561 hours, 27,100 cycles
- System (JASC): [2161 · Cabin Temperature Controller](https://openairdocs.org/jasc/2161)
- Part: Modulating Valve
- Part number: 3987865
- Part serial: 2196C
- Condition: Faulted
- Location: Zone 100
- Part time: 60 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA2023041152

## Discrepancy

AFTER ENGINE START WE GOT AN FLT DECK TEMP EICAS RAN THROGH ABNORMAL AND COULD NOT CONTROL HEAT. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE REMOVED & REPLACED ZONE TRIM AIR VALVE (V!) IAW AMM 21-61-07 AND ZONE TEMP CONTROLLER IAW AMM 21-61-03. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE.  MAINTENANCE REMOVED & REPLACED ZONE TRIM AIR VALVE (V!) IAW AMM 21-61-07. AIRCRAFT RETURNED TO SERVICE.

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