Ignition switch AD AA5B Home › Forums › Maintenance of Grummans › Electrical › Ignition switch AD AA5B This topic has 1 reply, 2 voices, and was last updated 3 years, 3 months ago by Roscoe Rosché. Viewing 1 reply thread Author Posts January 5, 2021 at 13:33 #15081 Frank LunnParticipant I was told that there is an AD to replace the ignition switch to keep the key from vibrating out. This would also entail changing the canopy lock to be able to use a single key. Has anyone heard of this? January 5, 2021 at 16:20 #15097 Roscoe RoschéKeymaster I just checked latest AD on the AA5B and the AG5B nothing on and ignition switch AD, There are 4 ADs on ignition switches, none to our planes. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In