SDR UPS04843547

Service difficulty report · Rib · Doug DC871F

Difficulty date: November 19, 2004
Submitted: November 29, 2004
Operation: Air carrier
Aircraft: N744UP
Make and model: Doug DC871F
Aircraft serial: 45944
Aircraft time: 75,722 hours, 49,419 cycles
System (JASC): 5712 · Wing, Rib/Bulkhead
Part: Rib
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

C3 LT WING CENTER L/E RIB CRACKED AT UPPER AFT END STA XW398. STOP DRILLED CRACK NDT VERIFIED REF SPM06-10-01.001. FABRICATE STACKED REPAIR ANGLES FROM SHT7075T6-.040 AND INSTALLED SAME REF SRM 57-2-0 FIG2, 57-3-1, FIG4, 57-3-1 FIG2, 51-1-8.

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