HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude

APM 2.5 hardware

APM 2.65 software

Steps:

1) start FG on the ground via Mission Planner.

2) Set plane to Auto

3) I restart FG at same location but at 30,000 ft.

Results: plane does a tight spiral dive to the waypoint altitude, then goes to the waypoint. Ig

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In stabilize mode pitch/elevator does not work

Just uploaded latest firmware 2.33, and APM 1.1.73.

Have an twinstar II with ardupilot mega and oilpan shield, gps, airspeed, magnatometer.

Setup flew last fall perfectly.  I added the battery monitor, the attopilot 90 and a power switch. Sadly, I didn

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