ursirius

Dave, since I don't think I can ever satisfy you, this will be my last word on the subject. I believe my only error is not stating that the Hamlin data I used was to summate his listings on pages 28 through 32 which do add up to 8580, and not using his summary table, which doesn't agree with his own breakdown and is a clear copy of Taylor. I will make this clear (yes, still in note 1) in an upcoming update of the site.

There are 420 pages of contract card and goodness knows how may relevant pages in the delivery ledgers. You seriously expect me to present those on the web page? The web page is, per se, a summary of this data which was reviewed and checked many times by two people independantly. In this I concur that my explanation here is better than on the web site and Note 1 will be amended accordingly. Hardly 'further down the page'. The table is an integral part of Note 1 and needs to be read as a whole. The objective of such so called manipulation is to ensure that authors data is comparable and that, with inclusion of the omissions, all agree on the total built, just not disposition. Yes, I suppose I could have presented the table twice, once verbatim and secondly with so called manipulations, but I assumed the reader could assess this from the notes.

My guess would be a D/F loop for trainee navigators, the window being blacked out for 'blind' navigator training.

Dave, as the owner of http://britishaviation-ptp.com/airspeed_as10.html, some comments in my defense. Unfortunately, Hamlin's book has quite a few errors. To start with, the summary table given on page 33 appears to be just pulled directly from H.A. Taylor's Airspeed book, but unfortunately doesn't agree with his own breakdown on the preceding pages! A summation of those pages is what I used when quoting Hamlin's totals, not his summary. Unfortunately, I must admit, on re-checking, to a small summation error - the Mk.I/Mk.II breakdown for Hamlin should have been 6231/2074 respectively. Also, I omitted to mention that I did not include the A.S.40 in the comparison table, as this was the sole Oxford built new as a civilian aircraft, and I was comparing purely the military versions. Hence to 8580 total in the comparison table. One of Hamlin's major errors is to continue the "Mk.I/II Inter" myth. Taylor also includes this and one has to suspect some of Hamlin's book was just taken from Taylor without further investigation. As described in the notes, a careful revue of contract details, delivery ledgers, AIR documents and MAP documents (the latter two curtesy of Geoff Sinclair) shows that this was simply a mis-interpretation. Hamlin's book was just one of many used to provide the information given in the site, most importantly being a review of contract and delivery records. As explained in notes 4 and 5, the basis for incorrect accounting between Mk.I and Mk.II aircraft seems to be a mis-interpretation of the terms "Intermediate Trainer" and "Advanced Trainer". Hope this gives you a bit more confidence in my site!