Service difficulty report · Spar · Doug MD11F

Difficulty date
August 5, 2011
Submitted
August 5, 2011
Operation
Air carrier
Aircraft
N642FE
Make and model
Doug MD11F
Aircraft serial
48485
Aircraft time
47,830 hours, 9,742 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Part number
ARB74142
Condition
Corroded
Location
Rt 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

RT WING REAR SPAR LOWER CHORD FOUND CORROSION LOCATED AT XORS 1042 -1070 AREA. CORROSION REMOVED AND PROTECTED IAW SRM 51-21-01, REV 47. ORIGINAL THICKNESS = 0.060", MATERIAL REMOVED = 0.020" , REMAINED THICKNESS = 0.040", DIA. IS 27" X 1.25" FOUND EXCEEDED LIMITS IAW SRM 57-00-10, ALLOWABLE DAMAGE 1, FIG 101, REV 47. REWORKED AREA REPAIR ACCOMPLISHED IAW FINAL EA 1-5710-150770, REPAIR CLASSIFIED AS MINOR IAW GMM 6-2-100, REV 112.

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