What was found
LOUD RUMBLE DURING CRUISE ACCOMPANIED BY ACRID ODOR. TURNED OFF FLIGHT DECK FAN. RUMBLE IMMEDIATELY STOPPED, ODOR DISSIPATED IN APPROXIMATELY THREE MINUTES.
- Difficulty date
- March 24, 2007
- Submitted
- March 26, 2007
- Operation
- Air carrier
- Aircraft
- N715CK
- Make and model
- Boeing 747209B
- Aircraft serial
- 22447
- Aircraft time
- 83,715 hours, 20,262 cycles
- System (JASC)
- 2121 · Air Distribution Fan
- Part
- Fan
- Condition
- Defective
- Location
- Cockpit
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- H
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.