I was approaching CYYZ yesterday in the CRJ-700, and activated APPR about 7 miles out from the runway. It immediately locked on to the glideslope, but started climbing. I initially believed that it was adjusting to match with the glideslope, but it kept climbing to an unreasonably high altitude . As you can see in the screenshot above, when I should be at around 2,000 feet, APPR had me at 4,195’ and climbing. I aborted the approach and did the final one manually, but what happened?
45° of flaps at 180 kts is crazy too much, as you can see from your incline your aircraft is trying to pitch down as much as possible but has too much lift. 20° would have been more appropriate.
At that point, I was attempting to abort the approach. I was increasing my speed, and preparing to retract the flaps. I was about 140kts on the approach before I aborted.
Also you said you intercepted 7nm out and in the screenshot you’re already at 183kts 6.6nm out. Power it at 37% which is the stable power setting for 180kts
I initially took it off, then about 5 seconds later, put it back on for the purposes of a screenshot (to provide as evidence for the issue). After snapping this photo, I took it off and just used headings.
At this point I almost never use APPR on my approaches and just use the A/P panel until I’m lined up on the runway. Only in extreme weather like heavy fog I will use APPR.
