SDR UPS04843531

Service difficulty report · Rib · Doug DC871F

Difficulty date: November 17, 2004
Submitted: November 22, 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: 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

LT WING L/E RIB CRACKED AT LOWER AND UPPER ENDS, STA835. STOP DRILLED CRACKS. NDT VERIFIED BOTH REF SPM 06-10-01.001. FABRICATED UPPER REPAIR FROM 7075T6-.050 AND FABRICATED LOWER REPAIR FROM S25972423 EXTRUSION REF SRM57-3-1, 57-2-0. INSTALLED REPAIRS REF SRM 57-2-0, 51-1-8, 51-1-20D.

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