B-17 Flying Fortress - Production-block B-17G-10-BO: 42-31232 to 42-31331

Modifications to this production-block

Provisions in nacelles for electronic supercharger regulators, provision for SCR-595 or SCR-695 radio, and revised bomb sight mount wiring added. National insignia change incorporated

B-17 Flying Fortresses in this production-block

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