Service difficulty report · Doubler · Boeing 747200

Difficulty date
August 7, 2007
Submitted
August 29, 2007
Operation
Air carrier
Aircraft
N521UP
Make and model
Boeing 747200
Aircraft serial
21944
Aircraft time
79,715 hours, 18,925 cycles
Part
Doubler
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 M/D LEFT BS 820 TENSION TIE TO FRAME CONNECTION FOUND NR 12 HOLE CRACK AT FRAME WEB DOUBLER. M/D LEFT BS 820 TENSION TIE TO FRAME ATTACH DOUBLER AT HOLE NR 12 OVERSIZED IN STACK UP TO 0.247 INCH DIA BY INCREMENT AS PER EO B747-5310-23715 APP D. FASTENER INSTALLED AS PER EO B747-5310-23715 APP C, AFTER HFEC INSPECTED PER NTM PART 6 51-00-00 FIG 16.

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