Ludwig Dokman, KG40, He111

Hello guys

I have been using this forum several times for researching items but finally found an occasion to ask a question here too myself.

I owe the flight book of Ludwig Dokman, member of the 3.K.G.40 8th Staffel. It starts on 17 April 1939 and ends abruptly On 22.8.41 when Dokman probably flew his 3rd feindflug.

His first combat mission states the following:
14.08.1941 Attack on Convoy 05 Ost 1489 + attack on Great Yarmouth (8 hits)
Flying plane He111 F8+ES

Second combat mission states:
19.08.1941 Attack on Convoy 05 Ost 1488 + attack on Lowestoft (target not recognized)
Flying plane He111 F8+BS

Then came 3 other types of flights on 20.08 and 22.08 and suddenly there are no other entries.

I had questions:

1) Can I suppose that he crashed at 23/24/25/26.08?
2) If he crashed, he probably flew a He111 with F8 number. Is is known which of the planes of KG40 crashed in this week?
3) Is there any other info about Dokman known?

Thank you very much

Giel