Service difficulty report · Drive Unit · Boeing 737990ER

Difficulty date
November 15, 2017
Submitted
November 17, 2017
Operation
Air carrier
Aircraft
N486AS
Make and model
Boeing 737990ER
Aircraft serial
44107
Aircraft time
8,700 hours, 2,916 cycles
Part
Drive Unit
Part number
6225135822
Part serial
4703CG
Condition
Failed
Location
Wx Radar
Part time
8,691 hours, 2,912 cycles
Stage of operation
NR
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.

What was found

WEATHER RADAR FAILED. ACFT GROUNDED. PERFORMED A WEATHER RADAR SYS BITE IAW FIM 34-43, TASK 801. ANTENNA FAULT DISPLAYED. REMOVED AND REPLACED THE WEATHER RADAR ANTENNA DRIVE UNIT IAW AMM 34-43-11. WEATHER RADAR SYSTEM OPS TESTED GOOD IAW AMM 34-43-00.