New Zealand PoWs killed in a/c accident at Crete

[Errol Martyn]

The following two New Zealand soldiers are officially recorded, respectively,
as having ‘died on Active Service while POW. Aircraft Accident. Crete at sea’
and
‘believed to have been killed in a German plane which was shot down while evacuating severely wounded prisoners to Greece’.

30058 Pte Hadyn Rowland OPPATT, NZ Infantry (22Bn) – Age 30.
6065 Lt William George SLADE, NZ Infantry (22Bn) – Age 33.

Oppatt is commemorated on the Athens Memorial, while Slade is buried at the Suda Bay War Cemetery. Date of death for each is recorded as 23 May 1941.

A long shot, I know, but wonder if any German records survive which might confirm the date and aircraft (Ju 52/3ms?) involved.

With thanks in advance for any assistance forthcoming.

Errol