What was found
UPPER RECIRCULATION FAN FAILED. CIRCUIT BREAKER `OHD RECIRC FAN PWR 2` R7 ON P415 TRIPPED. INVESTIGATION FOUND FAN BEARINGS HAD FAILED.
- Difficulty date
- July 8, 2005
- Submitted
- June 6, 2006
- Operation
- General aviation
- Make and model
- Boeing 747*
- Engine
- Ge CF680C2B2
- System (JASC)
- 2121 · Air Distribution Fan
- Part
- Cooling Fan
- Part number
- 732591D
- Condition
- Failed
- Location
- Cabin Air
- Part time
- 46,387 hours
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.