# SDR CALA2022111603152

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2022
- Submitted: November 16, 2022
- Operation: Air carrier
- Aircraft: [N769UA](https://openairdocs.org/aircraft/N769UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26921
- Aircraft time: 99,810 hours, 17,717 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Ctc
- Part number: 8102003
- Part serial: 0208
- Condition: Uncontrollable
- Location: Zone E Cabin
- 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/CALA2022111603152

## Discrepancy

ZONE E CABIN TEMP UNCONTROLLABLE, WITH TRIM AIR ON TEMP IS 55-60 F WHILE FWD CABIN IS TOO HOT LOCKED . REMOVED AND REPLACED LEFT CTC P# 810200-3 S# 98064644 OFF P# TEMP CONTROLER OPS NORMAL AT THIS TIME. NOTE CTC WAS CHANGED DUE 810200-3 S# C96080208 ON IAW AMM 21-61-01.  INSTALLED CTC OPC P# TO POSSIBLY BAD FROM STOCK CAUSING NEW TEMP FAULTS PARTS 2173BCG015-13 ONTO CHANNELS A AND B.

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