Sikorsky Model S-51 Maintenance Manual 1946 (SA-4045-1) by Sikorsky Helicopters Sale $86.00 | / SKU 31383:R Printed Manual - $86.00 Download - $86.00 Printed Manual Download Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Model S-51 Helicopter July 1946 Publication No. SA-4045-1 Register No. 114 Contents: General Details and Service Instructions, Maintenance, Charts & Tables, Service Inspection Guide