Sikorsky S-38 (and S-41)

Sikorsky S-38
Amphibious aircraft, 1928

Development:
The S-38 was a development of S-36. The first prototype flew on June 25, 1928. The aircraft entered service in late 1938, and a total of 111 S-38 were built.

Modifications:

S-38A - the first production version

S-38B - "Wasp" SC1 engines

Service:
With Pan American Airways, Northwest Airways, American Airways, Western Air Express.
 

Length (overall)  40 ft 3 in
Height on wheels 13 ft 10 in
Height in water 10 ft 2 in
Span (upper) 71 ft 8 in
Span (lower) 36 ft 0 in
Chord (upper) 100 in
Chord (lower) 59 in
Wing Area 720 sq ft
Airfoil G.S.1
Wheel tread 116 in
Gross Weight 10,480 lb
Empty Weight   6,000 lb
Useful Load   4,480 lb
Seats 8
High Speed   120 mph
Cruise Speed 103 mph
Landing Speed 57 mph
Climb (SL) 750 fpm
Ceiling 16,000 ft
Range 500 to 750 sm
Powerplant S-38-A 2 P&W Wasp (400 hp)
Powerplant S-38-AH 2 P&W Hornet (525 hp)
Fuel 180 to 270 gal
Oil 24 gal
Year of Introduction 1928
Type Data S-38-A ATC 60
Type Data S-38-AH  Memo 2-36