Sorry to bother you’ll, but for some reason whenever I start my flight in cold and dark with the 737–500, I follow all the proper procedures to activate everything from the hydraulics to the APU bleeding to the fuel pump systems to cut on the aircraft. For some weird reason when I’m airborne, even switching to NAV and F/D the AutoPilot still won’t switch on inflight. Everything is perfectly normal when I start my flight and “ready to taxi” mode on the other hand. Is there something I missed when doing the proper procedures and checklist or is there another bug that needs to be rectified? Looking forward to your feedback thanks,
Need help, or could be another bug
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Ok THAT‘s uncommon and most likely the problem. I suppose your yoke is not centered or your Trim setting is not set to the desired needed for your Takeoff .
At the time you Engage the A/P. Make sure your controls are all centred as Boeing 737 A/P relies on Hydraulic Control Inputs to Function not on Fly-By-Wire.
I hope this will solve the issue.☺️
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- Official Post
Did you transfer power to the engine generators and are there no caution lights in the overhead panel?
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I’ll try these suggestions and give a feedback later today.
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You need to be in good trim before you engage the autopilot, does the nose rise or fall if you release your joystick? is the throttle full or closed? are you turning?
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Thank you so much everyone, all the above suggestions paid off with 737 autopilot