Individual combat reports can be downloaded as pdfs for 3.50 pounds (10 bucks or so US?) via this link
http://www.nationalarchives.gov.uk/d...2aircombat.asp
Sometimes the file contains more than one report for the same man - you're in luck as all three reports for F/O Chipman are in one file, that is, all three reports (20 February, 2 March and 25 April 1944) for the single price
http://www.nationalarchives.gov.uk/d...&resultcount=1
Are you willing to post any logbook scans on flickr or photobucket? They are always highly interesting.