Service difficulty report · Control Panel · Boeing 737890

Difficulty date
October 16, 2023
Submitted
October 18, 2023
Operation
Air carrier
Aircraft
N577AS
Make and model
Boeing 737890
Aircraft serial
35186
Aircraft time
59,280 hours, 17,633 cycles
Part
Control Panel
Part number
4082260939
Part serial
01687669
Condition
Inoperative
Location
Cockpit
Part time
819 hours, 330 cycles
Stage of operation
CR
How discovered
V
Nature of condition
J
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AUTOPILOT A DISCONNECTED TWICE IN CRUISE, AUTOPILOT B DISCONNECTED ONCE IN CRUISE. NO APPARENT CAUSE NOTED. GROUNDED - YES. RELEASED PER MEL 22-1G BOTH AUTOPILOT INOP AND MEL 22-99B CATIII AUTOLANDNOT AUTHORIZED. AUTH BY SEAMC JARED @ 0005Z. DFCS BITE PROCEDURE 22-11 TASK 801. FOUND MCP INOP. REMOVED AND REPLACED MCP. REF AMM 22-11-34. BITE TEST PASSED. THIS REMOVES MEL 22-1G AND MEL 22-99B. CATIII TECH NEED FOR UPGRADE.