SDR WRNA20080032

Service difficulty report · Skin · Boeing 747230B

Difficulty date: March 24, 2008
Submitted: April 28, 2008
Operation: Air carrier
Aircraft: N508MC
Make and model: Boeing 747230B
Aircraft serial: 21644
Aircraft time: 104,714 hours, 19,366 cycles
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Damaged
Location: Bs 370 S14l
Stage of operation: IN
How discovered: E
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

DURING C CHECK, WHILE ACCOMPLISHING SSID F25-1, A CRACK WAS FOUND BY HFEC INSPECTION UNDER COUNTERSUNK HEAD AT STRINGER 14L STATION 370, CRACK EXTENDED 1/8 INCH AFT OF HOLE. REMOVED DAMAGED SECTION OF SKIN IAW SRM 53-30-03 FIG 17. FABRICATED FILLER AND DOUBLER IAW SRM 53-30-03 AND INSTALLED REPAIR IAW 51-30-02, 53-30-02, 51-10-06, AND 53-30-03 FIG 17.