SIAI-Marchetti SM.1019

The SIAI-Marchetti SM.1019 is an Italian STOL liaison monoplane built by SIAI-Marchetti for the Italian Army. It is a turboprop-powered derivative of the Cessna O-1 Bird Dog.

SM.1019
Role STOL liaison monoplane
National origin United States / Italy
Manufacturer SIAI-Marchetti
First flight 24 May 1969
Introduction 1976
Primary users Italian Army
Somali Air Force
Number built 86
Developed from Cessna O-1 Bird Dog

Development
The SM.1019A in the colours of the Italian Army
SIAI-Marchetti SM.1019

To meet an Italian Army requirement for a short take-off liaison aircraft, SIAI-Marchetti modified the design of the Cessna 305A/O-1 Bird Dog with a new turboprop engine and a revised tail unit. The prototype first flew on 24 May 1969 powered by a 317 hp (236 kW) Allison 250-B15C turboprop engine. It was evaluated against the Aermacchi AM.3 and was successful and won a production order for 80 aircraft.

Variants
SM.1019
Prototype with 317hp (236kW) Allison 250-B15C turboprop engine, one built
SM.1019A
Production with 317hp (236kW) Allison 250-B15G 400hp turboprop engine derated to 317hp, 81 built
SM.1019B
Production variant with 400hp (298kW) Allison 250-B17B turboprop engine, designated SM.1019E.I by the Italian Army, four built

Operators
 Italy
 Somalia

Accidents and incidents

On 24 July 2021, former US Navy F-14 pilot Dale "Snort" Snodgrass fatally crashed in an SM.1019B with the registration N28U at Lewiston–Nez Perce County Airport in Lewiston, Idaho.[1][2] The probable cause of the accident was, according to the NTSB report, failure to remove the flight control lock, which immobilized flight control surfaces.[3]

Specifications (SM.1019A)

Data from Jane's All The World's Aircraft 1976–77[4]

General characteristics

  • Crew: 2
  • Length: 8.52 m (27 ft 11 in)
  • Wingspan: 10.972 m (36 ft 0 in)
  • Height: 2.86 m (9 ft 5 in)
  • Wing area: 16.16 m2 (173.9 sq ft)
  • Aspect ratio: 7.44:1
  • Airfoil: NACA 2412
  • Empty weight: 690 kg (1,521 lb)
  • Gross weight: 1,300 kg (2,866 lb)
  • Max takeoff weight: 1,450 kg (3,197 lb)
  • Fuel capacity: 320 L (85 US gal; 70 imp gal) in four wing tanks ; Oil capacity 8 L (2.1 US gal; 1.8 imp gal)
  • Powerplant: 1 × Allison Model 250-B17B turboprop engine, 298 kW (400 hp)
  • Propellers: 3-bladed Hartzell HC-B3TF-7/T10173-11R constant-speed reversible pitch metal propeller

Performance

  • Cruise speed: 296 km/h (184 mph, 160 kn) max at sea level
300 km/h (190 mph; 160 kn) max cruise speed at 2,500 m (8,200 ft)
281 km/h (175 mph; 152 kn) 75% power cruise speed at 2,500 m (8,200 ft)
  • Stall speed: 98 km/h (61 mph, 53 kn) flaps up
70 km/h (43 mph; 38 kn) flaps extended
  • Never exceed speed: 313 km/h (194 mph, 169 kn)
  • Range: 925 km (575 mi, 499 nmi) at sea level
1,090 km (680 mi; 590 nmi)
  • Endurance: 5 hours 45 minutes at sea level ; 6 hours 40 minutes at 3,000 m (9,800 ft)
  • Service ceiling: 7,620 m (25,000 ft)
  • Rate of climb: 9.1833 m/s (1,807.74 ft/min)
  • Wing loading: 80.4 kg/m2 (16.5 lb/sq ft) at 1,300 kg (2,900 lb) AUW ; 89.7 kg/m2 (18.4 lb/sq ft) maximum
  • Power/mass: 4.36 kg/kW (7.17 lb/hp) at 1,300 kg (2,900 lb) AUW ; 4.87 kg/kW (8.01 lb/hp)
  • Take-off run: 112 m (367 ft)
  • Landing run: 91.5 m (300 ft)
  • Take-off run to 15 m (49 ft): 220 m (720 ft)
  • Landing run from 15 m (49 ft): 220 m (720 ft)

See also

Related development

Aircraft of comparable role, configuration, and era

References
  1. Leone, Dario (2021-07-25). "Dale "Snort" Snodgrass, legendary US Navy F-14 Tomcat pilot, killed in the crash of a SIAI-Marchetti SM.1019". The Aviation Geek Club. Retrieved 2021-07-26.
  2. "Legendary F-14 Pilot Dale 'Snort' Snodgrass Dies In A Tragic Plane Crash". The Aviationist. 2021-07-25. Retrieved 2021-07-26.
  3. "Snodgrass SIAI-Marchetti SM-1019B NTSB Final Report" (PDF). AvWeb. 2022-07-06. Retrieved 2023-08-17.
  4. Taylor 1976, pp. 117–118.
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985). Orbis Publishing. p. 2856.
  • Taylor, John W.R. (1976). Jane's All the World's Aircraft 1976–77. London: Jane's Yearbooks. ISBN 0-354-00538-3.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.

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