MU stand for? Also “06.40. 7 O.T.U” should that read “06.07.40”? And be 5 O.T.U? And what is FAT (2)? Sorry I don’t

Maintenance Unit

http://en.wikipedia.org/wiki/RAF_Maintenance_Command

OTU is Operational Training Unit

http://en.wikipedia.org/wiki/List_of_Royal_Air_Force_Operational_Training_Units

?.06.40. prob means unreadable date in late June

FAT(2) etc are R.A.F. Aircraft – Damage Categories

FA is “Flying Accident”

http://www.k5083.mistral.co.uk/DAM_CAT.HTM

SOC is “Struck Of Charge”