SDR UPS96421477

Service difficulty report · Spar Web · Boeing 747SR46

Difficulty date: October 17, 1996
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N680UP
Make and model: Boeing 747SR46
Aircraft serial: 20923
System (JASC): 5711 · Wing Spar
Part: Spar Web
Condition: Cracked
Location: Ws 453
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

INSPECTION TYPE-C, MID-SPAR WEB INSPECTION, EO 747-5710-7893 FOUND CRACK IN WEB AT WS 453. CRACK IS APPROX 7 MM, STARTING AT FASTENER HOLE FROM SECOND ROW OF FASTENERS THAT ATTACH THE WEB TO THE UPPER CHORD. REPAIRED MID-SPAR WEB AT WS 453 ACC EO B747-5710-7893, APPNDIX C.

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