Service difficulty report · Structure · Boeing 747422

Difficulty date
March 8, 2012
Submitted
April 13, 2012
Operation
Air carrier
Aircraft
N181UA
Make and model
Boeing 747422
Aircraft serial
25278
Aircraft time
85,746 hours, 10,455 cycles
Engine
Pwa PW4056
Part
Structure
Condition
Cracked
Location
K Flap
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

KRUEGER FLAP 16 HAS CRACK APPROX 6 IN AT UPPER OTBD CORNER. REMOVED KRUEGER FLAP PER MM. ACCOMPLISHED PRE-INSTALLATION INSPECTION OF NR 16 KRUEGER FLAP ATTACH POINTS ON ACFT. INSTALLED FLAP AND TORQUED BOLTS UP TO STEP 3.E.(9) PG 406 MM. COMPLETED INSTALLATION OF NR 16 L/E FLAP FROM ITEM 3(E)9.