What was found
NR 4 ENG R FLANGE CRACK AT 7 O''CLOCK POSITION ON LIGHTENING HOLE. NR 2 ENG TURBINE COOLING CRACKED AT 10 O''CLOCK POSITON. REPAIRED PER MM 72-09-71, REP 8.
- Difficulty date
- April 15, 2000
- Submitted
- May 31, 2000
- Operation
- Air carrier
- Aircraft
- N921FT
- Make and model
- Boeing 747283B
- Aircraft serial
- 21575
- Aircraft time
- 52,980 hours, 11,966 cycles
- Engine
- Pwa JT9D70A
- Engine time
- 15,949 hours, 3,316 cycles
- System (JASC)
- 7250 · Turbine Section
- Part
- Flange
- Condition
- Cracked
- Location
- Nr 4 Engine
- 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.