There are 2 drawings for part 1-28723 available in AirCorps Library

Manufacturer's Drawing

Boeing Aircraft Corporation,   B-17 Drawings - Late,   Page: --,   Revision: ac  

STRAP OXY. HOSE SUPT.

Associated Aircraft:   B-17  

Manufacturer's Drawing

Boeing Aircraft Corporation,   B-17 Drawings - Late,   Page: --,   Revision: c  

STRAP OXY. HOSE SUPT.

Associated Aircraft:   B-17