First picture - I don't believe there is a squadron crest on the engine cowling. It could be a man sitting on the wing opening the cowling (looks like the people in front of the wing are watching him.) or a blemish in the photo/negative, aircraft yellow 9.
Second picture - "-------o" possibly the Technical Officer. The underlying "RB or RD" is part of the Stammkennzeichen, a four letter factory code assinged to the aircraft. http://www.luftwaffe-experten.org/stammkennzeichen.html
Comment