SDR UIEA99069

Service difficulty report · Fitting · Boeing 747230B

Difficulty date
August 31, 1999
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N509MC
Make and model
Boeing 747230B
Aircraft serial
21221
Part
Fitting
Part number
REFMO540097
Condition
Oversize
Location
Nr 1/4 Pylons
Part time
95,346 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

NR 1 AND NR 4 PYLONS FOUND FASTENER HOLE SIZE TO EXCEED TOLERANCE PER SB 747-54A2152 IN SPRINGBEAM SUPPORT FITTINGS IN 3 HOLE LOCATIONS. HOLES WERE OVERSIZED, NDT PERFORMED TO VERIFY NO CRACKS. NO INSURANCE CUT WAS PERFORMED AND FASTENERS INSTALLED. THIS IS A TIME LIMITED REPAIR APPROVED AS AN ALTERNATE METHOD OF COMPLIANCE BY BOEING. PERMANENT REPAIR TO BE ACCOMPLISHED PRIOR TO MARCH 28, 2000. (M)