Service difficulty report · Doubler · Boeing 747256B

Difficulty date
May 7, 2004
Submitted
May 17, 2004
Operation
Air carrier
Aircraft
N528UP
Make and model
Boeing 747256B
Aircraft serial
24071
Aircraft time
57,133 hours, 9,720 cycles
Part
Doubler
Part number
A1S130100501
Condition
Cracked
Location
Nr 3 Pylon
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

INSPECTION TYPE: C, NR 3 PYLON LOWER WEB EXTERNAL O/B FWD OF REAR ENG BHD FITTING SKIN CRACKED AS RED MARKED (NAC 212-214 WBL R470). THE CRACK STOP DRILLED PER SRM 54-14-03 FIG 2 & REPAIR DOUBLER INSTALLED PER SRM 54-14-03 FIG 2, NDT CONFIRMED NO CRACK.