Service difficulty report · Fan · Boeing 777222

Difficulty date
May 29, 2010
Submitted
June 10, 2010
Operation
Air carrier
Aircraft
N786UA
Make and model
Boeing 777222
Aircraft serial
26938
Aircraft time
57,794 hours, 8,480 cycles
Engine
Pwa PW4090
Part
Fan
Part number
8102191
Part serial
291
Condition
Faulty
Location
Recirculation
Stage of operation
CL
How discovered
O
Nature of condition
B
Precautionary procedure
A

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

What was found

RECIRC FAN FAILURE, RTFL. SEE DF879, FOUND LWR R RECIRC FAN BRG FAIL WITH OVERHEATED. DEACTIVATED LWR R FAN. OPERATED BOTH PACKS, GASPER FAN AND UPPER AND LT LWR LT RECIRC FANS, CHECKED ALL CABIN AND FOUND NO SMOKE AND ODOR. ALSO ACCOMPLISHED SMOKE OR FUMES IN CABIN INSP. MSG 21-24700 ACTIVE. ACCESSED LOWER RT FAN AND FOUND BEARING FAIL WITH FAN OVERHEAT. DEACTIVATED (PULLED B10 CB ON P210 AND SAFETIED) R-LOWER RECIRC FAN IAW MEL 2125A. REPLACED RECIRCULATION FAN. OPS CKD NORMAL AND MESSAGE CLEARED.