I note ‘serials’ has WV910 w/o in 1958 and sent to ETPS for ground instruction. Dad has a 50 minute ‘famil’ flight logged on 29th April 1959, so that info is not quite correct.

WV910 was certified Cat HX on 2/5/58 (not w/o).

Cat HX indicates that the aircraft may have been repairable on-site, so may well have subsequently flown again.