Sikorsky Helicopters UH-19C,D Series Organizational Maintenance Manual (55-1520-201-20) by Sikorsky Helicopters Sale $180.00 | / SKU 8145:R Printed Manual - $180.00 Download - $180.00 Printed Manual Download Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart