I had the -600 oscillate above and below the G/S on approach. Did it twice on the same approach (I performed go around first time), no issue with winds as was 7kt headwind.
I have heard it also happen on an RNav and if you watch FD2S stream before he disconnects the AP you can see it suddenly go to -1000fpm then back to 0.
LevelUp 737-700 porpoising at cruise
in Forum
Posted
I had the -600 oscillate above and below the G/S on approach. Did it twice on the same approach (I performed go around first time), no issue with winds as was 7kt headwind.
I have heard it also happen on an RNav and if you watch FD2S stream before he disconnects the AP you can see it suddenly go to -1000fpm then back to 0.