Modifications to this production-block

Stowage positions for extra SCR-274N radio units added from 42-98015. Reduced number of supercharger fixing bolts. Ball turret disconnect switch added.

B-17 Flying Fortresses in this production-block

S/NUnitFateManufacturer
42-97990
    42-97991
    42-97992 / Hap Hazard aka Trouble Buggy
    42-97993
    42-97994
    42-97995
    42-97996
    42-97997 / Honorable Patches
    42-97998 / Roanoke Magician
    42-97999
    42-98000
    42-98001
    42-98002
        42-98003
        42-98004
        42-98005
        42-98006 / The Old Yard Dog
        42-98007 / Sleepy Time Gal
        42-98009
        42-98010
        42-98011 / Caledonia
          42-98012 / Cannon Ball Too
          42-98013
          42-98014
          42-98015 / Hundred Proof