Service difficulty report · Precooler · Boeing 777222

Difficulty date
May 9, 2010
Submitted
May 10, 2010
Operation
Air carrier
Aircraft
N793UA
Make and model
Boeing 777222
Aircraft serial
26946
Aircraft time
56,364 hours, 8,282 cycles
Engine
Pwa PW4090
Part
Precooler
Part number
23417441
Condition
Cracked
Location
Nr 2 Engine
Stage of operation
IN
How discovered
9
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

NR 2 ENGINE PRECOOLER CRACKED ALONG INBD, BOTTOM EDGE. STARTED TO REMOVE PRECOOLER. ACCOMPLISHED UP TO STEP NR 2. NEED TO COMPLETE FROM STEP NR (11) PG405. ACCOMPLISHED FROM MM36-11-15, PG404 STEP (11) THROUGH PG416 STEP 3(G)4. ACCOMPLISHED FROM PG416 STEP 3 H TO TO END, NO LEAK FOUND.