What was found
NR 4 ENGINE R-RAIL IS CRACKED CIRCUMFERENTIALLY, LIGHTENING HOLE TO LIGHTENING HOLE AT THE 5:30 POSITION. WELDED AND STRESS RELIEVED IAW PRATT AND WHITNEY MM 72-53-01.
- Difficulty date
- July 18, 1996
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N851FT
- Make and model
- Boeing 747122
- Aircraft serial
- 19756
- Engine
- Pwa JT9D7A
- System (JASC)
- 7250 · Turbine Section
- Part
- R-Rail
- Condition
- Cracked
- Location
- Nr 4 Engine
- 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.