What was found
RIGHT PACK SECONDARY HEAT EXCHANGER IS CRACKED OPEN ON TOP SIDE. ACCOMPLISHED REMOVAL OF PRIMARY AND SECONDARY HEAT EXCHANGER PER MM. REPLACED PRI & SEC HEAT XCH PER AMM DUE TO CRACKED HEAT XCHG. RAN RT PACK, OPS CHK NORMAL
- Difficulty date
- April 16, 2011
- Submitted
- April 20, 2011
- Operation
- Air carrier
- Aircraft
- N548UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25396
- Aircraft time
- 73,461 hours, 21,221 cycles
- Engine
- Pwa PW2037
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Heat Exchanger
- Part number
- 1942722
- Part serial
- 32258
- Condition
- Cracked
- Location
- Ac Pack
- 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.