What was found
LOW PITCH HUM AND VIBRATION DURING CRUISE AT MULTIPLE FLIGHT LEVELS. APPEARED TO BE COMING FROM BELOW COCKPIT BEHIND CENTER & COUNSEL. F/A'S REPORTED SAME FROM FWD GALLEY. R & R FAN EXTRACT BLOWER IAW AMM 21-26-51. OPS CHECKED OK.
- Difficulty date
- July 1, 2017
- Submitted
- July 5, 2017
- Operation
- Air carrier
- Aircraft
- N789JB
- Make and model
- Airbus A320232
- Aircraft serial
- 4612
- Aircraft time
- 27,085 hours, 8,994 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Fan
- Part number
- EVT3454HC
- Part serial
- 164901929
- Condition
- Failed
- Location
- E/E Bay
- Part time
- 27,099 hours, 8,994 cycles
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.