Service difficulty report · Stiffener · Boeing 737322

Difficulty date
March 3, 2006
Submitted
March 28, 2006
Operation
Air carrier
Aircraft
N326UA
Make and model
Boeing 737322
Aircraft serial
23958
Aircraft time
51,756 hours, 27,752 cycles
Part
Stiffener
Part number
69620144
Condition
Cracked
Location
Bs 663
Part time
51,756 hours, 27,752 cycles
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

MAIN WHEEL WELL FWD BULKHEAD STIFFENER IS CRACKED WL 170 LBL 6.5. STIFFENER WAS REMOVED AND REPLACED AT MAIN WHEEL WELL STA. 663, LBL 6.15 PER MM57-12-96 PAGE 401 REPAIR 2. PER ADVANCE MM 57-12-96 PAGE 404 ITEM 6. B. CREATED A CF ITEM TO REPLACE BOTH STIFFENERS OF A NEW DESIGN NO LATER THAN 15000 FLIGHT CYCLES FROM CURRENT PLANE TOTAL 006412 CYCLES, OR PRIOR TO FURTHER FLIGHT AT NEXT DISCOVERY OF A STIFFENER CRACK. CURRENT AIRCRAFT PTC IS 27752.