North American B-25J Mitchell
North American B-25J Mitchell

Technical Specifications

The North American general order NA-62 was issued on September 5, 1939. This order authorized the production of 1 test airframe and 184 aircraft. The B-25 was born. From the start of production of the first B-25 until the completion of the last B-25J, there were 9,889 B-25 bombers produced in two factories. The Inglewood, California factory produced 3,209 B-25 bombers, and the Fairfax, Kansas plant produced 6,680 B-25 bombers. This number includes the final 72 aircraft that were completed after the war officially ended. The production history of each of those B-25 bombers, including the predecessor of the B-25 known as the NA-40, is included on these pages separated by production block. I have also included information on the "missing" E, F, and I models. Although the technical details do vary from model to model, here are some basic numbers that are generally true for most aircraft.

  • Total Produced: 9889
    • Inglewood, California manufacturing plant: 3209
    • Fairfax - Kansas City, Kansas manufacturing plant: 6680
  • Wing Span: 67 feet 6.7 inches
  • Wing Area: 610 square feet
  • Length: 53 feet
  • Weight empty: 20,305 pounds
  • Normal gross weight: 27,051 pounds
  • Useful load: 6,746 pounds
  • Power plant: Two 1,700-hp Wright Cyclone supercharged 14-cylinder radial engines
  • Props: 12 foot 7 inch full-feathering, constant-speed Hamilton Standard three-bladed props
  • Top speed: In excess of 285 miles per hour
  • Cruising Speed: 230 miles per hour
  • Service Ceiling: 24,200 feet
  • Fuel capacity: 916 gallon self-sealing fuel cells in center wing section
  • Crew: Pilot, co-pilot, bombardier, radio operator, gunner
  • Range: In excess of 3,000 miles using droppable tanks
  • Landing gear: Hydraulically operated tricycle
  • First Airplane Accepted: February 1941
  • Last Airplane Accepted: August 1945

Production Blocks

NA-40

Model NAA Contract SN NAA # # Produced
NA-40/NA-40B NA-40 N/A N/A 1

B-25-NA

Model NAA Contract SN NAA # # Produced
B-25-NA NA-62 40-2165/40-2188 62-2834/62-2857 24

B-25A-NA

Model NAA Contract SN NAA # # Produced
B-25A-NA NA-62 40-2189/40-2228 62-2858/62-2897 40

B-25B-NA

Model NAA Contract SN NAA # # Produced
B-25B-NA NA-62 40-2229/40-2348 62-2898/62-3017 120

B-25C-NA

Model NAA Contract SN NAA # # Produced
B-25C-NA NA-82 41-12434/41-13038 82-5069/82-5673 605
B-25C-1-NA NA-82 41-13039/41-13296 82-5674/82-5931 258
B-25C-5-NA NA-90 42-53332/42-53493 90-11819/90-11980 162
B-25C-10-NA NA-94 42-32233/42-32382 94-12641/94-12790 150
B-25C-15-NA NA-93 42-32383/42-32532 93-12491/93-12640 150
B-25C-20-NA NA-96 42-64502/42-64701 96-16381/96-16580 200
B-25C-25-NA NA-96 42-64702/42-64801 96-16581/96-16680 100

B-25D-NC

Model NAA Contract SN NAA # # Produced
B-25D-NC NA-87 41-29648/41-29847 87-7813/87-8012 200
B-25D-1-NC NA-87 41-29848/41-29947 87-8013/87-8112 100
B-25D-5-NC NA-87 41-29948/41-30172 87-8113/87-8337 225
B-25D-10-NC NA-87 41-30173/41-30352 87-8338/87-8517 180
B-25D-15-NC NA-87 41-30353/41-30847 87-8518/87-9012 495
B-25D-20-NC NA-100 42-871413/42-87137 100-20606/100-20630 25
B-25D-25-NC NA-100 42-87138/42-87452 100-20631/100-20945 315
B-25D-30-NC NA-100 42-87453/42-87612
43-3280/43-3619
100-20946/100-21105
100-23606/100-23945
160
340
B-25D-35-NC NA-100 43-3620/43-3869 100-23946/100-24195 250

XB-25E

Model NAA Contract SN NAA # # Produced
XB-25E N/A 42-32281 94-12689 1

B-25/F-10-NC

Model NAA Contract SN NAA # # Produced
B-25/F-10-NC NA-87/NA-100 varies varies 47

B-25G-NA

Model NAA Contract SN NAA # # Produced
B-25G-1-NA NA-93 42-32384/42-32388 93-12491/93-12495 5
B-25G-5-NA NA-96 42-64802/42-64901
42-64902/42-65101
96-16681/96-16780
96-20806/96-21005
100
200
B-25G-10-NA NA-96 42-65102/42-65201 96-21006/96-21105 100

B-25H-NA

Model NAA Contract SN NAA # # Produced
B-25H-1-NA NA-98 43-4105/43-4404 98-21106/98-21405 300
B-25H-5-NA NA-98 43-4405/43-4704 98-21406/98-21705 300
B-25H-10-NA NA-98 43-4705/43-5104 98-21706/98-22105 400

NA-98X

Model NAA Contract SN NAA # # Produced
NA-98X NA-98 43-4406 98-21407 1

B-25J-NC

Model NAA Contract SN NAA # # Produced
B-25J-1-NC NA-108 43-3870/43-4104
43-27473/43-27792
108-24196/108-22430
108-34486/108-34805
235
320
B-25J-5-NC NA-108 43-27793/43-28112 108-34806/108-35125 320
B-25J-10-NC NA-108 43-28113/43-28222
43-35946/43-36245
108-35126/108-35235
108-35236/108-35535
110
300
B-25J-15-NC NA-108 44-28711/44-29110 108-31986/108-32385 400
B-25J-20-NC NA-108 44-29111/44-29910 108-32386/108-33185 800
B-25J-25-NC NA-108 44-29911/44-30910 108-33186/108-34185 1000
B-25J-30-NC NA-108 44-30911/44-31510
44-86692/44-86891
108-36986/108-37585
108-47446/108-47645
600
200
B-25J-35-NC NA-108 44-86892/44-86897
45-8801/45-8818
45-8820/45-8823
45-8825/45-8828
45-8832
108-47646/108-47651
108-47652/108-47669
108-47671/108-47674
108-47676/108-47679
108-47683
6
18
4
4
1
B-25J-35-NC NA-108 45-8819
45-8824
45-8829/45-8831
45-8833/45-8899
108-47670
108-47675
108-47680/108-47682
108-47684/108-47750
1
1
3
67

A note about serial numbers: The serial numbers are not always consecutive. There are many reasons for these discrepancies. There were two plants producing B-25 bombers at the same time. At the beginning of each contract, each plant was assigned a block of serial numbers. Sometimes, a plant would not make as many planes as it had serial numbers assigned. This would create a gap between serial numbers. If a plant were to use all of the assigned serial numbers, new numbers were issued, again creating a gap. On several occasions, planes from one model were modified into another model production run. This also creates discontiguous serial numbers. Several B-25 production blocks were contracts destined for different countries. These production blocks were separate contracts and therefore had different serial numbers assigned. The discrepancy in serial numbers of the final production run of B-25J-35-NC planes was due to the termination of the B-25 production contract. There were 72 aircraft listed in the contract termination inventory as "Flyable but incomplete" condition.