With the festive spirit building steadily at flightglobal.com, we have five copies of Haynes' new manual on the Messerschmitt Bf109 fighter to give away.
Paul Blackah, the co-author of previous such books on the Avro Lancaster and Supermarine Spitfire, has joined forces with Malcolm Lowe to create this 164-page hardback gem, which is packed with archive images and colour pictures from the restoration of "Black 6", flown in the UK until its crash in 1997. Almost everything you need to restore, fly and service your very own Bf109.
For your chance to win a copy of the book - recently published at £17.99 - email your answer to the following question to firstname.lastname@example.org, with the phrase 'Bf109 competition' in the subject line:
What year did the Bf109 make its first flight?
Entries must be received by 11 December, and are limited to one per person. Good luck!