Service difficulty report · Spar · Doug MD11F

Difficulty date
January 25, 2008
Submitted
April 9, 2008
Operation
Air carrier
Aircraft
N294UP
Make and model
Doug MD11F
Aircraft serial
48455
Aircraft time
62,889 hours, 8,989 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
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 LEFT WING FIXED WING FRONT SPAR ENCLOSURE APPROX STA XORS 506 UPPER SKIN FOUND CRACKED. CRACKED AREA TRIMMED OFF AS PER SRM 57-10-00 FIG.27V.1R.40. HFEC C/OUT IAW DA CNDTSPM R.13 PART 06-10-01.001, FOUND NO CRACK EVIDENT. REP ANGLES FAB USING 7075-0-0.063 MATL PER SRM 57-10-00 FIG 27 V.1R.40. REP ANGLES HEAT TREATED TO T6 COND PER DPS7.00-1 & HARDNESS OBTAINED HRB79.1, ACCEPTABLE PER DPS1-05-3. REP PARTS PROTECTED PER SRM 51-21-01V.2R.40. OK TO INSTALL.

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