Must find reference again, but an ASV system sent to Canada in that period is said to be lost on a sunk ship.
Found no air crash related to Tizard Mission after browsing the web so far.
Just FYI and for curiosity sake, also see
https://catalog.archives.gov/id/1339...ect-thumb--369 (March 27, 1942) and
https://catalog.archives.gov/id/1340...ject-thumb--58 (Nov. 12, 1942).
Regards, Leendert
Reference to a lost ASV radar set in a sunk ship in David Zimmerman's book
Top Secret Exchange.