There are 2 drawings for part 98-616140 available in AirCorps Library

Manufacturer's Drawing

North American Aviation,   B-25 Mitchell Drawings,   Page: --,   Revision: n/a  

CHANNEL - 75 MM CANNON MUZZ. OPENING CLOSE OFF BLKHD. REINF.

Associated Aircraft:   B-25  

Manufacturer's Drawing

North American Aviation,   B-25 Mitchell Drawings - May / Sept 1945,   Page: --,   Revision: n/a  

CHANNEL - 75 MM CANNON MUZZ. OPENING CLOSE OFF BLKHD. REINF.

Associated Aircraft:   B-25