Service difficulty report · Doubler · Boeing 747212B

Difficulty date
May 28, 2007
Submitted
June 25, 2007
Operation
Air carrier
Aircraft
N520UP
Make and model
Boeing 747212B
Aircraft serial
21943
Aircraft time
83,127 hours, 18,423 cycles
Part
Doubler
Part number
65B0173780
Condition
Cracked
Location
Fuselage
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 THROUGH THICKNESS CRACK FOUND AT BS 880 STR 9R TENSION TIE AT NR 10 FASTENER HOLE OF FRAME DOUBLER THE CRACK RUNNING AT UPWARD DIRECTION (CRACK LENGTH .25 INCH). M/DECK BS 880 RIGHT STR 9R FRAME ATTACH DOUBLER REPLACED AND INSTALLED AS PER SRM 51-10-01 PG 9 AND 51-30-02.

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