It would just be AIR 1/1529/204/72/1 thro /3 probably, as Shaw was RTU’ed in late May 1916, and file /4 is for June 1916. The other refs you sent are RNAS and he certainly wasn’t with them. Before becoming a KB observer and KB Section Commander, Shaw was a Captain in the West Riding Territorials (from pre-war) and thus Army. Also, his service pre-dates the formation of KB Wings, and he was RTU’ed before any of these were formed.
Another oddity I’ve discovered about Shaw is that his AIR 76 file is listed under the name Francis Harold Shaw and the personal details are incorrect, but the record of transfers etc. are spot on! It seems that some clerk at the time made a monumental howler and added his details to someone else’s record, or duplicated the Shaws as there was an Airman by the name in the RFC as well. My man’s real name was Frank Hubert Shaw, the well-known (at the time) author of sailing and maritime books.