SDR EIAA970200

Service difficulty report · Spar · Boeing 747SR46

Difficulty date
November 5, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N478EV
Make and model
Boeing 747SR46
Aircraft serial
21033
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Cracked
Location
Ws 630-680
Part time
53,053 hours
Stage of operation
IN
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

SUU - LOG PAGE: C6838 - DURING WALK-AROUND, FOUND FUEL LEAK INBD NR 3 PYLON, APPEARS TO BE COMING FROM WING SPAR ATTACHMENT. NR 3 MAIN FUEL TANK UPPER FASTENERS SEEPING. AFTER FERRYING AIRCRAFT TO REPAIR STATION, FURTHER INSPECTION FOUND FUEL LEAK FROM A 6.50 INCH CRACK ON FRONT SPAR AT WS 650.0. SPLICE IN NEW FRONT SPAR WEB SECTION IN THE RT WING BETWEEN FSS 1630 AND FSS 1680, WITH MODIFICATIONS FOR OVERSIZED HOLES, FASTENERS AND INSTALLATION OF A FREEZE PLUG IN THE FRONT SPAR LOWER CHORD. REPAIRED IAW ECRA 478-57-072-2 AND BOEING DRAWING. (X)

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