What was found
RT PACK OVERHEAT. REPLACED INLET CONDITION TEMP SENSOR, NO HELP. WHILE REPLACING FLOW CONTROL VALVE AMT FOUND HEAT EXCHANGER WITH AN 8" CRACK, REPLACED HEAT EXCHANGER, NO LEAKS DETECTED.
- Difficulty date
- December 7, 2009
- Submitted
- December 18, 2009
- Operation
- Air carrier
- Aircraft
- N228UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30556
- Aircraft time
- 32,731 hours, 4,033 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Heat Exchanger
- Part number
- 8102089
- Part serial
- 253
- Condition
- Cracked
- Location
- Rt
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.