SDR 96ZZZX26

Service difficulty report · Disc · Boeing 747*

Difficulty date
December 1, 1995
Submitted
March 26, 2000
Operation
General aviation
Make and model
Boeing 747*
Engine
Pwa JT9D7
Part
Disc
Part number
825601
Condition
Cracked
Location
Hpt Stage 1
Part time
34,540 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

HPT INSPECTION FOUND ON THE FORWARD OUTSIDE DIAMETER OF THE DISC IN THE RADIUSED PORTION, OVER AN 0.5 INCH WIDE BAND FOR 360 DEGREES, MULTIPLE CIRCUMFERENTIAL CRACKING CAUSED BY COALESCED CORROSION PITS APPROXIMATELY 0.007 INCH DEEP. CYCLES, 10,324.