This video is largely about the ICP tour, which the author finally gets to after checking on his friend whose 912 quit (conveniently over a valley airstrip).
The previous video, mainly about the forced landing (posted here before) is below.
An interesting article on the engine-out glide by Thomas Turner:
Theory and practice: getting the glide right
WWW.FLIGHTSAFETYAUSTRALIA.COM
Gliding a powered aircraft is a rare and high-stakes exercise. If you have to get down safely without engine power, knowledge and experience will be your only friends Many articles cover in-flight engine failure –...
This video sets out the somewhat similar situation in the US, but all based on ADSB data collection. It claims that this is contrary to assurances from government that the data would never be used for non-safety-related purposes, nor for regulation enforcement.
(The key points are made between mins 05:00 and 10:00)
Midair collision involving Eurocopter EC130 B4, VH-XH9, and Eurocopter EC130 B4, VH-XKQ, Main Beach, Gold Coast, Queensland, on 2 January 2023 | ATSB
WWW.ATSB.GOV.AU
A Dynon, or similar PFD, is only able to report TAS because it's fed air data (pitot/static) along with outside air temp and is privy to pressure altitude, so it has all it needs to calculate TAS. (Like you can do manually - and roughly - on some old style Air Speed Indicators by dialling in OAT against PA).
But an EFB - if we're talking portable tablet devices - has no clue as to TAS because it gets no air data.