Service difficulty report · Stiffener · Boeing 747243B

Difficulty date
February 6, 2004
Submitted
March 31, 2004
Operation
Air carrier
Aircraft
N517MC
Make and model
Boeing 747243B
Aircraft serial
23300
Part
Stiffener
Condition
Cracked
Location
Krueger 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

DURING D-CHECK AT SIN, FOUND NR 16 KRUEGER FLAP INBOARD STIFFENER CRACKED. TRIMMED OUT CRACKED SEGMENT OF STRINGER FLANGE TO REMOVE DAMAGE. NDT INSPECT STRINGER TO INSURE CRACK AND DEFECT FREE CONDITION. INSTALLED ALUMINUM REPAIR ANGLE AND ALUMINUM FILLER TO COMPENSATE FOR MATERIAL REMOVED. REFINISHED TRACK TO DESIGN CONDITION. (M)