SDR UIEA2011020500046

Service difficulty report · Skin · Boeing 7472D7B

Difficulty date: February 5, 2011
Submitted: February 8, 2011
Operation: Air carrier
Aircraft: N523MC
Make and model: Boeing 7472D7B
Aircraft serial: 21782
Aircraft time: 102,790 hours, 20,995 cycles
System (JASC): 5730 · Wing, Plate/Skin
Part: Skin
Condition: Damaged
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

MAJOR REPAIR. DURING A-CHECK BEING PERFORMED, MX FOUND THE LT WING ILES 718.80; UPPER L/E PANEL - EXTERNAL SKIN WITH CRACK/DELAMINATION DAMAGE , MEASURING 24.0 INCHES LONG, LOCATED 4.5 INCHES FROM THE AFT END OF THE L/E PANEL. REF FIG 1. PERMANENT REPAIR PERFORMED IAW THE SRM 51-40-09, FIG 18 SHEETS 3 & AMP; 5 AND PREPREG 250A° F CURE IAW SRM 51-40-12.

More about the Boeing 747-2D7B