SDR UIEA9991

Service difficulty report · Spar Web · Boeing 7472D3B

Difficulty date
October 19, 1999
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N505MC
Make and model
Boeing 7472D3B
Aircraft serial
21251
System (JASC)
5711 · Wing Spar
Part
Spar Web
Condition
Cracked
Location
Rt Wing
Part time
74,272 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

RIGHT WING MID SPAR UPPER CHORD FOUND WEB CRACKS. INDICATIONS VERIFIED USING HFEC INSPECTION, BETWEEN MSS 563.24 AND 592.45. AT MSS 575 THE WEB AT THE TWO CRACKED FASTENER HOLES WERE TRIMMED OUT AND A PERMANENT REPAIR WAS ACCOMPLISHED USING FILLERS, A DOUBLER AND A STIFFENER REF 8110-3. (M)

More about the Boeing 747-2D3B