SDR UIEA200800109

Service difficulty report · Panel · Boeing 7472D7B

Difficulty date: April 4, 2008
Submitted: April 15, 2008
Operation: Air carrier
Aircraft: N523MC
Make and model: Boeing 7472D7B
Aircraft serial: 21782
Aircraft time: 95,369 hours, 19,490 cycles
System (JASC): 5730 · Wing, Plate/Skin
Part: Panel
Condition: Delaminated
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 UPPER FIXED LEADING EDGE ON UPPER SURFACE HAS AN AREA OF 30.0 INCHES BY 10.0 INCHES OF DELAMINATION. ACCOMPLISHED PERMANENT REPAIR AS PER B747-200 SRM 51-40-09, FIG 18, SHEET 3 AND 5, PREPREG 250 DEGREES F CURE PER SRM 51-40-12. ALSO, REFERENCE ATLAS AIR EO NR 4757A425.

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