Service difficulty report · Stiffener · Boeing 777222

Difficulty date
February 25, 1999
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N766UA
Make and model
Boeing 777222
Aircraft serial
26917
Engine
Pwa PW4077
Part
Stiffener
Condition
Damaged
Location
Bs 246
Part time
16,010 hours
Stage of operation
IN
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

VERTICAL STIFFENERS AT STA 246 FLOORBEAM BUCKLED AND/OR CRACKED IN BEND RADIUS. LOCATIONS WERE AT RBL 50.0 (P/N 144W8518-69), RBL 44.95 (P/N 141W8518-69), RBL 38.0 (P/N 141W8518-87), RBL 26.06 (P/N 141W8518-72), RBL 7.88 (P/N 141W8518-73), LBL 7.88 (P/N 141W8518-69), LBL 26.06 (P/N 141W8518-88). *S/D* FABRICATED AND INSTALLED NEW STIFFENERS. NEW STIFFENERS FABRICATED FROM SAME MATERIAL AS ORIGINAL PART NUMBER, EXCEPT MADE FROM FROM ONE GAGE THICKER SHEET.