Service difficulty report · Precooler · Boeing 777222

Difficulty date
November 7, 2012
Submitted
November 9, 2012
Operation
Air carrier
Aircraft
N222UA
Make and model
Boeing 777222
Aircraft serial
30553
Aircraft time
48,051 hours, 5,801 cycles
Engine
Pwa PW40903
Part
Precooler
Part number
23408721
Part serial
1043
Condition
Blown
Location
Nr 1 Engine
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.

What was found

FOUND NR 1 ENGINE PRECOOLER BLOWN. IT DAMAGED MULTIPLE HEAT BLANKETS ON SAME ENGINE REVERSER. NR 1 ENGINE PRECOOLER LEAKING. REMOVED NR 1 ENGINE PRECOOLER PER MM. NEW PRECOOLER IN AREA. REPLACED PRECOOLER ASSY.