Message posted by Joerg (Webmaster) on January 03, 2017 at 19:37:06 PST:
I am sure it happened before. But usually the Janets turn the transponder off just past Mercury, before they deviate form the filed flight plan to TTR. They even change their callsign in mid-air when they are handed off to Groom Approach, a highly unusual procedure.
In Reply to: Re: Janet WWW451 posted by Andy on January 03, 2017 at 17:01:38 PST: