Rippert studied after WWII and became a (sport) journalist.
His older brother (aka Ivan Rebroff) was a very famous singer of Russian (folk) songs.
That above news had been reported in Germany four weeks ago already, after an
interview in the 'Süddeutsche' with the diver

Motor of the plane, source
see above
I hope some enterprising author writes a book about it.
The story is known since 2006 but only got headlines in Germany, when the pilote's famous brother died recently - and thus made it in the French headlines again (in mid-March), too.