The airfield had three grass runways: north/south which was 1,280 metres (4,200 ft), east/west which was 1,143 meters (3,750 ft) and south east/north west which was 1,005 meters (3,297 ft). Awkward. You never tell the readers that the measurement was length. Done – clarified the distances are length and tried to cut down on text.
Only use the year on the first date; readers will know that all following dates are for that year until told different. Done
Avro Ansons multi-role aircraft suggest changing the latter description to "trainers" Done
However, the high frequency of flying and ground conditions led to drainage problems Suggest something like "The combination of ..." Done
1944 seems awfully early for the RAF to have any surplus Lancasters or Harvards Done – checked source and it only describes storage of aircraft so haev claridied