What was found
NR 4 ENG 13TH STAGE TURBINE CASE COOLING DUCT RUPTURED AND BLEW THRU LT REVERSER HALF. REPLACED 13TH STAGE COOLING DUCT & LT REVERSER HALF.
- Difficulty date
- March 31, 2003
- Submitted
- April 2, 2003
- Operation
- Air carrier
- Aircraft
- N921FT
- Make and model
- Boeing 747283B
- Aircraft serial
- 21575
- Aircraft time
- 59,142 hours, 13,270 cycles
- Engine
- Pwa JT9D70A
- Engine time
- 40,627 hours, 8,945 cycles
- System (JASC)
- 7520 · Engine Cooling System
- Part
- Tube
- Part number
- 773863
- Condition
- Ruptured
- 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.