SDR WRNA200700043

Service difficulty report · Skin · Boeing 747212B

Difficulty date: June 19, 2007
Submitted: June 22, 2007
Operation: Air carrier
Aircraft: N526UP
Make and model: Boeing 747212B
Aircraft serial: 21937
Aircraft time: 90,844 hours, 17,075 cycles
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Skin
Condition: Damaged
Location: Bs 765-775
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

DURING -B- CHECK, OUT OF LIMIT LIGHTNING STRIKE DAMAGE WAS FOUND BETWEEN BS 765 & 775 AT LBL 4.5. DRILLED OUT DAMAGE IAW SRM 53-30-03 FIG 3A AND INSTALLED RIVETS IAW SRM 51-30-02. THIS IS A CATEGORY-C REPAIR AND REQUIRES INSPECTION AT 1,000 CYCLES.

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