The Texas Air Museum

Beechcraft C-45/JRB-1/SNB-2



The Beechcraft Model 18, which first flew in January 1937, is the most modified U.S.-certified aircraft design, with over 200 FAA approved Type Certificates on record. The U.S. Army Air Corps was the first military to purchase the model 18 for a utility/personnel transport, giving it the designation C-45 Expeditor. The Twin Beech soon found use as a pilot/navigation trainer, which was designated AT-7 Navigator. Others, designated AT-11 Kansan, were built with a clear bomber nose, small bomb bay, and dorsal gun turret for bombardier, navigator, and gunnery training.

JRB on ramp

JRB inside

The U.S. Navy and Marine Corps used the Model 18 also. The Navy designation for trainers was SNB (S = Scout, N = Trainer, B = manufacturer: Beechcraft), and the transports were known as JRB (J = Utility, R = Multi-Engined Transport).

Marine JRB-1

This particular aircraft was built during WW2 as a Navy SNB-2 trainer, and served in the Navy for over 30 years. When restored, it will be painted as a Marine JRB-1 (shown above). This JRB-1 was the personal transport for Marine Maj. General Alexander Vandergrift, the commander of the First Marine Division in the South Pacific. This JRB had the General's 2-star flag on the nose and the insignia of the First Marine Div. near the tail.

General Characteristics
  
Crew:
  
2 pilots
Capacity: 6 passengers
Length: 34 ft, 2 in
Height: 9 ft, 8 in
Wingspan: 47 ft, 8 in
   
Empty weight:
   
6,175 lb
Loaded weight: 7,500 lb
Max takeoff weight: 8,727 lb
   
Engine Manufacturer:   
   
Pratt and Whitney
Engine Type: R-985-AN-1 "Wasp Junior"
Number of Cylinders:    Nine
Power:
  
450 hp each
   
Performance Characteristics
  
Max speed:
  
225 mph
Range: 1,200 mi at 160 mph
Service ceiling: 26,000 ft