Service difficulty report · Heat Exchanger · Boeing 757222

Difficulty date
May 26, 2010
Submitted
May 26, 2010
Operation
Air carrier
Aircraft
N534UA
Make and model
Boeing 757222
Aircraft serial
25129
Aircraft time
62,659 hours, 23,212 cycles
Engine
Pwa PW2037
Part
Heat Exchanger
Condition
Failed
Location
Cabin Temp
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
B

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CABIN PRESSURE WARNING. FLIGHT DESCENDED TO FL110. REPLACED SECOND HEAT EXCHANGER. LT PACK OPS CHECK GOOD. COOLS AS GOOD AS RT PACK.