SDR UPS08M52102

Service difficulty report · Stringer · Doug MD11

Difficulty date: January 20, 2008
Submitted: April 30, 2008
Operation: Air carrier
Aircraft: N294UP
Make and model: Doug MD11
Aircraft serial: 48472
Aircraft time: 62,889 hours, 8,989 cycles
System (JASC): 5713 · Wing, Longeron/Stringer
Part: Stringer
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:C LT WING UPPER STRINGER END NR S12 SUSPECT CRACK AS MARKED THRU ACCESS NR 535BT. HFEC INSP CARRIED OUT PER DAC NDT SPM R.13 PART 06.10.01.00 AND CRACK APPROX 7 INCHES FOUND. CRACK AT LHW STR NR 12 SLOTTED OUT PER SRM 57-20-00 FIG 10 V.1R.35. REPAIR ANGLES FABRICATED PER SRM 57-20-00 FIG 10V.1R.35 AND HEAT TREATED TO T6 PER DPS7.00-1 HARDNESS OBTAINED HRB82.5 IS ACCEPTABLE PER DPS1.05.3. REPAIR ANGLES HOLES PICK UP PER SRM 57-20-00 FIG 10 V.1R.35.

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