Last Updated: December 23, 2006
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| Model | Designation | Manufacturer | Engine(s) | Crew | Other |
|---|---|---|---|---|---|
| XLB-1 | Huff-Daland | 1 Packard 1A-2540 | 3 | ||
| LB-1 | Huff-Daland | 1 Packard 2A-2540 | 4 | ||
| XLB-2 | Fokker-Atlantic | 2 Pratt & Whitney R-1340 Wasp | 5 | ||
| XLB-3 | Huff-Daland | 2 Liberty V-1410-1 | 5 | ||
| XLB-3A | Keystone | 2 Pratt & Whitney R-1340-1 Wasp | 5 | ||
| XLB-4 | Martin | 2 Pratt & Whitney R-1690-1 Hornet | cancelled | ||
| XLB-5 | Huff-Daland | 2 Liberty V-1650 | 5 | ||
| LB-5 | Huff-Daland | 2 Liberty V-1650 | 5 | ||
| LB-5A | Keystone | 2 Liberty V-1650 | 5 | ||
| XLB-6 | Keystone | 2 Wright R-1750-1 Cyclone | 5 | ||
| LB-6 | Keystone | 2 Wright R-1750-1 Cyclone | 5 | ||
| LB-7 | Keystone | 2 Pratt & Whitney R-1690-3 Hornet | 5 | ||
| XLB-8 | Keystone | 2 Pratt & Whitney R-1860-3 Hornet | 5 | ||
| XLB-9 | Keystone | 2 Wright R-1750 Cyclone | 5 | ||
| LB-10 | Keystone | 2 Wright R-1750-1 Cyclone | 5 | ||
| LB-10A | Keystone | 2 Pratt & Whitney R-1690-3 Hornet | 5 | B-3A | |
| XLB-11 | Keystone | 2 Wright R-1750-3 Cyclone | 5 | ||
| XLB-11A | Keystone | 2 Wright G1R-1750 Cyclone | 5 | ||
| LB-12 | Keystone | 2 Pratt & Whitney R-1860-1 Hornet | 5 | ||
| LB-13 | Keystone | 2 Pratt & Whitney GR-1690 Hornet | 5 | Y1B-4, Y1B-6 | |
| LB-14 | Keystone | 2 Pratt & Whitney GR-1860 Hornet | 5 | Y1B-5 |
Web Formatting - Copyright 2006 Derek Bridges
Last Updated: December 23, 2006
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