What was found
ETOPS SIGNIFICANT SYSTEM: UNABLE TO HEAT COCKPIT. ONLY COLD AIR WITH CONT CAB SELECTOR AT MAX. ACCOMPLISHED BITE TEST ON NR 1 AND NR 2 ZONE TEMP CONTROLLERS IAW B737-400 M/M 21-61-00, OPS CHECK NORMAL. NO FAULTS NOTED.
- Difficulty date
- December 12, 2011
- Submitted
- December 14, 2011
- Operation
- Air carrier
- Aircraft
- N752MA
- Make and model
- Boeing 73748E
- Aircraft serial
- 28198
- Aircraft time
- 25,864 hours, 24,606 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Cockpit Temp
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.