Service difficulty report · Frame · Boeing 747243B

Difficulty date
January 18, 2010
Submitted
March 9, 2010
Operation
Air carrier
Aircraft
N517MC
Make and model
Boeing 747243B
Aircraft serial
23300
Aircraft time
87,026 hours, 14,764 cycles
Engine
Ge CF650E2
Part
Frame
Condition
Cracked
Location
Bs 360 S2r
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

PERFORMED BOROSCOPE INSP AND FOUND CRACK ON FRAME BY LENGTH 3" AT BS 360, S-2R END OF CRACK STOPPED BY STOPPING HOLE. REINFORCED AREA WITH DOUBLER & ANGLE PN N517MC-NRC677-1/2 IAW SRM 53-10-04, FIG 18. PERMANENT REPAIR PRIOR TO 20,000 CYCLES IAW EO 4753B240 PART 2.