What was found
AUDIBLE HUM AND VIBRATION IN FLIGHT DECK FLOOR, STOPPED WHEN RADAR WAS SHUT OFF. GROUNDED - YES. REMOVED AND REPLACED WEATHER RADAR DRIVE UNIT REF B737-900 AMM 34-43-11, OPS CHECK GOOD. AIRCRAFT RELEASED FROM MEL 34-15D.
- Difficulty date
- April 7, 2019
- Submitted
- April 8, 2019
- Operation
- Air carrier
- Aircraft
- N469AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41702
- Aircraft time
- 18,566 hours, 6,127 cycles
- System (JASC)
- 3442 · Weather Radar System
- Part
- Drive Unit
- Part number
- 6225135822
- Part serial
- 41513G
- Condition
- Vibration
- Location
- Weather Radar
- Part time
- 15,444 hours, 5,101 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.