SDR UPS07M48949

Service difficulty report · Stiffener · Doug MD11F

Difficulty date: December 4, 2006
Submitted: January 24, 2007
Operation: Air carrier
Aircraft: N286UP
Make and model: Doug MD11F
Aircraft serial: 48453
Aircraft time: 63,404 hours, 9,612 cycles
System (JASC): 5312 · Fuselage Main, Bulkhead
Part: Stiffener
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 AFT FX COMPT FWD BULKHEAD APPROX AT RBL 10 FOUND VERTICAL STIFFENER TOP EDGE CRACKED. CRACK STIFFENER PARTS & FASTENERS REMOVED PER SRM 53-00-01 FIG 8 VIR38 & 51-31-01VIIR38. CRACK STIFFENER CUTOFF PER SRM 53-00-01 FIG 8VIR38. HFEC C/O PER DACNDTSPMREV1206-10-01.001 NO CRACK. REPAIR ANGLES FAB PER SRM 53 -00-01 FIG 8VIR38, HEAT TREAT PER DPS7.00-1 & HARDNESS VALUES HRB81.4 PER DPS1.05-3. INSTL PER SRM 53-00-01 FIG 8VIR38 & 51-31-01VIIR38 EN1007-07.

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