To add some timings to the Brewster Buffalo production. Firstly the USN says F2A/B339D for Netherlands East Indies, F2A-1 for USN and Finland (B339), F2A-2 for Belgium (B339), RAF (B339E) and USN, F2A-3 USN
F2A-1, USN July to December 1939, Finland probably December 1939 to February 1940, exported January and February 1940
F2A-2, Belgium April to July 1940, exported 7 to Belgium in June, 33 to Britain June to August, received the same months, Britain exported 15 during November and December.
F2A-2 USN 42 September to November 1940 plus 1 in January 1941, Britain 170 December 1940 to May 1941, exported December 1940 to June 1941, plus 1 laggard in November 1941, 2 arrived Britain January 1941, 167 arrived Far East February to August 1941, 1 more arrived Far East January 1942.
F2A, Belgium 72 from March to June 1941, 71 exported March to August, 20 more January to April 1942, exported, along with 1 from the earlier order the same months. So 21 to Australia, Archives Series A705 Control Symbol 9/1/1377 Aircraft Status - Aircraft received from USA [United States of America] and NEI [Netherlands East Indies] Barcode 273020, page 30 has a list of NEI serials for the 17 used by the RAAF
F2A-3 108 USN July to December 1941.
To the end of 1939 the reports defined new US aircraft produced when either a) delivered to the US military, b) civil aircraft registered in the US or flew using manufacturer's markings or c) exported (including military aircraft for foreign governments). In 1940 the report's definition of produced was changed to a) military aircraft accepted by the US or foreign military, b) civil aircraft registered in the US or flew using manufacturer's markings or c) a civil aircraft exported, with all twelve or more seat transports counted as military aircraft even if for civil customers.
The following excludes Gliders and lighter than air types and production for export.
Civil production figures were deliberately blurred to hide individual company totals and measurement was different by different agencies, the Department of Commerce had Monthly Survey of Current Business and yearly supplement reports, The Aircraft Year Book by the Aeronautical Chamber of Commerce of America Inc and the Annual Report of the Civil Aeronautics Administration and its Statistical Handbook, plus others. While they tend to agree over a year their monthly figures can be quite different.
July 1937, Department of Commerce 296 aircraft, ACCA 261, meantime type breakdown from the magazine Aviation, Vol 36, no 7, 8, 9, 10, 11, 12, month ending the first for July 1937 was 210 deliveries, 10 Beech 17, 6 Cessna C37, 12 Fairchild G, 5 Fairchild H, 2 Howard DGA, 1 Lockheed 10B, 1 Lockheed Electra, 4 Monocoupe 90A, 1 Monocoupe 110, 2 Ryan STA, 1 Spartan 7W, 1 Stearnman-Hammond Y-15, 3 Stearnman-Hammond Y-15, 19 Stinson SR, 67 Taylor J2, 57 Taylor-Young Model A, 1 Waco EGC, 1 Waco UKS, 2 Waco YKS, 2 Waco YQC, 7 Waco ZGC, 2 Waco ZKS, 2 Waco ZPF, 1 Waco ZQC
As war came closer published reports began being dropped, monthly production figures for military aircraft ceased in September 1938, resumed after the war, but stopped again after July 1948. One result of this is later publications sometimes report production for the US military in 1938 as the January to September total, not the 1,253 total the USN+USAAF report.
Going forward to 1940 Department Of Commerce monthly figures total 6,748 in 1940 (which is also the ACCA 1941 yearbook total) but later reports say the monthly average civil production is 565 = 6,780 for year while the CAA and later ACCA yearbooks say 6,785. CAA Second Annual Report (1940) says 2,289 civil aircraft built January to June 1940 versus the Department Of Commerce figure of 2,329. The amended monthly figures have not been published.
| Seats | Total | 1 to 2 Seat | 3 to 5 Seat | 6 to 20 Seat | over 20 Seat | Seaplane | Amphibious | Unclassified | | |
1940 | 6,785 | 5,527 | 1,031 | 8 | 132 | 18 | 3 | 66 | | |
1941 | 6,844 | 6,060 | 573 | 3 | 112 | 16 | 30 | 50 | | |
| Power | Total | Under 50 HP | 51 to 70 HP | 71 to 100 HP | 101 to 165 HP | 166 to 225 HP | 226 to 300 HP | 301 to 600 HP | 601 to 1,600 HP | Unclassified |
1940 | 6,785 | 490 | 4,529 | 935 | 211 | 318 | 37 | 72 | 137 | 56 |
1941 | 6,844 | 7 | 4,303 | 1,805 | 206 | 309 | 15 | 31 | 118 | 50 |
In July 1940 the War production Board started tracking civil production using what it called deliveries = USAAF acceptances, which means its monthly figures vary considerably compared with other references, the following is the 1941 totals EXCLUDING the currently unlocated July and August reports, which would probably add over 1,000 aircraft.
Program companies
4 Beech
16 Bellanca
4 Boeing
26 Cessna
133 Culver
70 Douglas Santa Monica/El Segundo
83 Engineering & Research
54 Fairchild
30 Grumman
23 Lockheed
0 Ryan
4 Stearman
1 Vega
1 Vought Sikorsky
9 Vultee Tennessee
Non Program companies
840 Aeronica
0 All American
14 AGA Aviation
154 Columbia
5 deHavilland
0 Funk
44 Howard
20 Luscombe
6 Noorduyn
0 North American
2,569 Piper
56 Rearwin
0 Republic
266 Stinson
812 Taylorcraft
0 Texas Engineering
42 Vultee Wayne
206 Waco
5,492 Total
Civil also hits a definition change at the end of 1941, the Department of Commerce has 985 civil type in 1942, others have none, with appropriate adjustments to military aircraft totals.
Jane's All the Worlds Aircraft 1951/52 reports Piper produced 707 Cubs in 1937, 737 in 1938, 1,806 in 1939, 3,016 in 1940 and the 10,000th Cub was built during 1941, implying over 3,000 Cubs were produced in 1941. These figures indicate Piper was about half the US civil aircraft production 1937 to 1941. The Book Mr Piper and his Cubs by Devon Francis indicates Piper built and sold 8,020 out of 17,727 private aircraft 1939 to 1941, the figures for 1941 are given as Piper 3,197, Taylorcraft 1,000 and Aeronica 999.