Service difficulty report · Autopilot Sys · Boeing 737890

Difficulty date
April 20, 2012
Submitted
April 23, 2012
Operation
Air carrier
Aircraft
N577AS
Make and model
Boeing 737890
Aircraft serial
35186
Aircraft time
19,249 hours, 5,866 cycles
Engine
Cfmint CFM567B27
Part
Autopilot Sys
Condition
Malfunctioned
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

F/O COURSE SELECTOR WINDOW ON MCP INOPERATIVE. ON SUBSEQUENT FLIGHT TOGA BUTTON DOES NOT ACTIVATE 'PITCH GUIDANCE' UNTIL AIRBORNE. NR 1 CMD A/P WILL NOT ENGAGE. F/O CMD A/P WILL ENGAGE. DUPLICATED PROBLEMS FOUND MCP NR 1 DC C/B OUT. INSPECTED C/B & PANEL AREA NO DEFECTS NOTED RESET SAME. ALL FUNCTIONS CHECKED NORMAL. ACCOMPLISHED BITE GRP NR 32 LAND VERIFY & HOUSING SENSOR TESTS IAW 34-36-00.