SDR UPS07848840

Service difficulty report · Stiffener · Doug DC871F

Difficulty date: January 5, 2007
Submitted: January 12, 2007
Operation: Air carrier
Aircraft: N744UP
Make and model: Doug DC871F
Aircraft serial: 45944
Aircraft time: 76,629 hours, 50,136 cycles
System (JASC): 5720 · Wing Miscellaneous Structure
Part: Stiffener
Condition: Cracked
Location: Lt Wing
Stage of operation: IN
How discovered: 9
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:C2 RADIOGRAPHIC INSP DETECTED A CRACK ON THE LT WING AT STA XRS437.00 VERTICAL STIFFENER IN THE LEADING EDGE. REMOVED REPAIR FROM VERTICAL STIFFENER IAW SRM 51-1-21. FABRICATED AND INSTALLED REPAIR DOUBLER, AND REPAIR ANGLE AT LT WING STA XRS 437.00 VERTICAL STIFFENER IAW DWG 5770170-5, AND SRM'S 57-02-00 FIG 2, 51-1-4, AND 51-1-20D.

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