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United States' Stinson / Vultee L-1 Vigilant liaison

Photos

  • Stinson O-49 Vigilant liaison
  • Stinson L-1 Vigilant liaison
  • Vultee L-1 Vigilant liaison
  • Vultee L-1 Vigilant liaison

Design

In 1940 the United States Army Air Corps put out a specification for a liaison aircraft. Stinson's O-49 was selected and 142 ordered.

The structure was mostly metal with a fabric cover.

The ailerons went down 26° when they were fully dropped.

Redesignation

In 1942 the O-49 became the L-1, and the O-49A became the L-1A.

Production

  • Stinson O-49, L-1: 142
  • Stinson O-49A, L-1A: 182

Variants

  • Stinson O-49, L-1:
  • Stinson O-49A, L-1A: Longer fuselage and additional equipment.

Usage

Lend Lease

The L-1 and L-1A were supplied to the Royal Air Force (RAF) under Lend Lease. They were named the Vigilant.

The RAF used the Vigilants mostly for artillery spotting in the Mediterranean.

Specifications

  L-1 Vigilant
Type Liaison
Crew 2
Engine (Type) 1: Lycoming
Cylinders Radial
Cooling Air
HP 280
Dimensions  
Span 51'
Length 34'
Height 10'
Weight  
Loaded 3,300 lb
Performance  
Speed 130 mph
Landing speed 31 mph
Armament None
  L-1A Vigilant
Type Liaison
Crew Pilot, Observer
Engine (Type) Lycoming R-680-9
Cylinders Radial
HP 295
Dimensions  
Span 50' 11"
15.52 m
Length 34' 3"
10.44 m
Height 10' 2"
3.1 m
Wing area 329 sq ft
30.56 sq m
Weight  
Empty 2,670 lb
1,211 kg
Loaded 3,400 lb
1,542 kg
Performance  
Speed 122 mph
196 kph
Service ceiling 12,800'
3,900 m
Range 280 miles
451 km
Armament None

Sources:

  1. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
  2. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
20th Century American Military History Crucial Site