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Airbus Helicopters AS350 Ecureuil/Astar

Light Utility Helicopter (LUH)

France | 1975

"The AS350 system is a widely-used utilitarian type helicopter covering military, commercial and security needs."

Authored By: Staff Writer | Last Edited: 02/14/2022 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
The AS350 was originally designed to replace the aging Sud Aviation / Aerospatiale Alouette II light utility helicopter series. The AS350 appeared first under the Aerospatiale brand label but is now known under the Eurocopter name. First flight was achieved on June 26th, 1974 with introduction of the system taking place in 1975. The helicopter has been in production ever since and has become a fixture in the inventories of dozens of nations around the world.

The AS350 maintains an impressive streamlined appearance. The pilot and (optional) co-pilot are seated in the forward portion of the fuselage with excellent visibility forward, below, above and to the sides. Entry is via a hinged automobile-style door. The passenger cabin - with room for six - offers hinged doors to either side of the fuselage with large windows. The Turbomeca powerplant sits atop and to the rear of the passenger cabin with exhaust jettisoned out through a cylindrical system aft. The rotor mast fits the main rotor high away from the fuselage and is made up of a three-bladed main rotor system. The empennage, adding to the AS350's distinct look, is long and slender and sports horizontal planes at about midway. The tail section is made up of a dorsal vertical tail fin with a shorter ventral fin below. The tail rotor sits to the starboard side of the aircraft. The undercarriage features a fixed skid arrangement.

Military operators of the AS350 series include Australia, Brazil (Brazil has built single- and twin-engined versions locally under license by Helibras), Chile, Ecuador, Vietnam and the United Kingdom among others. The AS350 fits equally well within the realm of security operations and is used as such by police forces in Austria, Botswana, Brazil, Canada, South Africa and the United States - US police forces being a quantitative user of note. The AS350 has also found a home in the civilian markets of the world and operates in this capacity for Austria, Chile, Finland, Hungary, Iran, Iceland, Italy, New Zealand and Sweden among others (see variants list for full report). Air tours across Hawaii make heavy use of the AS350 series in their scenic flights over the various islands.

The AS350 has since been branched out into a twin engine known as the AS355 Ecureuil 2 and the single-engine EC130 Ecureuil while the AS350 is marketed in North America as the Astar.

Israel's Elbit Systems has ordered four H125s to modify for Israeli Police service. Introduction is expected for 2016.

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Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Eurocopter AS350 B3 Light Utility Helicopter (LUH).
1 x Turbomeca Arriel 2B or 2B1 turboshaft engine developing 847 horsepower.
178 mph
287 kph | 155 kts
Max Speed
16,549 ft
5,044 m | 3 miles
Service Ceiling
408 miles
657 km | 355 nm
Operational Range
1,959 ft/min
597 m/min
City-to-City Ranges
Operational range when compared to distances between major cities (in KM).
The nose-to-tail, wingtip-to-wingtip physical qualities of the Eurocopter AS350 B3 Light Utility Helicopter (LUH).
139.3 ft
42.45 m
O/A Length
10.6 ft
(3.24 m)
O/A Height
2,736 lb
(1,241 kg)
Empty Weight
5,666 lb
(2,570 kg)
Design Balance
The three qualities reflected below are altitude, speed, and range. The more full the box, the more balanced the design.
Available supported armament and special-mission equipment featured in the design of the Airbus Helicopters AS350 Ecureuil/Astar Light Utility Helicopter (LUH) .
Usually none but can be mission-specific as needed and based on operator.
Notable series variants as part of the Airbus Helicopters AS350 Ecureuil/Astar family line.
AS350 - Prototype Model Designation
AS350 "Firefighter" - Fire Fighter Variant
AS350 B - Fitted with 1 x Turbomeca Arriel 1B engine.
AS350 B1 - Fitted with 1 x Turbomeca Arriel 1D engine.
AS350 B2 - Fitted with 1 x Turbomeca Arriel 1D1 engine; increased overall weight.
AS350 B3 - Fitted with 1 x Turbomeca Arriel 2B digitally-controlled engine.
AS350 B3/2B1 - Increased MTOW; dual hydraulic arrangement.
AS350 BA - Fitted with 1 x Turbomeca Arriel 1B engine; redesigned main rotor blades.
AS350 BB - Fitted with Turbomeca Arriel 1D1 series engine; selected by British Ministry of Defense.
AS 350 C "A-Star" - Fitted with Lycoming LTS-101-600A2 engine primarily for North American markets.
AS 350 D "A-Star" / "A-Star Mark III" - Fitted with Lycoming LTS-101 series engine; primarily for North American markets.
AS350 L1 - Militarized AS350 B1; fitted with Turbomeca Arriel 1D turboshaft engine of 684shp.
AS350 L2 - Militarized AS350 B2; fitted with Turbomeca Arriel 1D1 turboshaft engine of 732shp.
HB350 B "Esquilo" - Militarized variant for use by Brazilian Air Force; sans armament.
HB350 B1 "Esquilo" - Militarized Variant for use by Brazilian Navy.
HB350 L1 - Militarized Variant for use by the Brazilian Army.
CH-50 - Brazilian Designation for HB350 B "Esquilo" model; production by Helibras.
TH-50 - Brazilian Designation for HB350 B "Esquilo" model; production by Helibras.
UH-12 - Brazilian Designation for HB350 B1 "Esquilo" model; production by Helibras.
HA-1 - Brazilian Designation for HB350 L1 model; production by Helibras.
Eurocopter Squirrel HT.1 - RAF Designation of AS 350 BB; trainer variant.
Eurocopter Squirrel HT.2 - British Army Air Corps trainer based on the AS 350 BB
AS355 - Prototype Model Designation of twin-engine version.
AS355 E - Production Model Designation; fitted with 2 x Allison 250 turboshaft engines; designated as "Twin Star" in North American market.
AS355 F - "Improved" AS355; new main rotor blades.
AS355 F1 - Fitted with Allison C20F engines; increased MTOW.
AS355 F2 - Fitted with Allison C20F engines and new transmission system; increased MTOW.
AS355 M - Militarized Variant of the AS355 F1 model.
AS355 M2 - Militarized Variant of the AS355 F2 model.
AS355 N "Ecureuil 2" - Fitted with 2 x Turbomeca Arrius 1A series digitally-controlled engines; designated "TwinStar" in North American market.
As355 NP "Ecureuil 2" - Fitted with 2 x Turbomeca Arrius 1A1 turboshaft engines and new gearbox; increased MTOW.
HB.355F "Ecureuil 2" - License-production Brazilian models under Helibras brand.
HB.355N "Ecureuil 2" - License-production Brazilian models under Helibras brand.
Soloy Super D = AS350 BA model fitted with LTS101-600A-3A engine.
Soloy Super D2 - AS350 B2 model fitted with LTS101-700D-2 engine.
Heli-Lynx 350FX1 - AS350 BA model powered by LTS101-600A-3A engine.
Heli-Lynx 350FX2 - AS350 BA or AS350 B2 models powered by LTS101-700D-2 engine.
Otech AS350BA+ - AS350 BA model powered by LTS101-600A-3A engine.
Heli-Lynx 355FX1 - Fitted with Allison C20F engine.
Heli-Lynx 355FX2 - Fitted with Allison C20F engine.
Heli-Lynx 355FX2R - Fitted with Allison C20R engine.
Starflex AS355F1R - AS355 F1 model fitted with Allison C20R engine.
Starflex AS355F2R - AS355 F2 model fitted with Allison C20R engine; new tail rotor blades.
Global customers who have evaluated and/or operated the Airbus Helicopters AS350 Ecureuil/Astar. Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 3,000 Units

Contractor(s): Aerospatiale / Airbus Helicopters (Eurocopter) - France
National flag of Albania National flag of Algeria National flag of Australia National flag of Austria National flag of Bosnia and Herzegovina National flag of Brazil National flag of Canada National flag of Chile National flag of China National flag of Denmark National flag of Ecuador National flag of France National flag of Finland National flag of Gabon National flag of modern Germany National flag of Guinea National flag of Hungary National flag of Iceland National flag of Iran National flag of Ireland National flag of Israel National flag of modern Jamaica National flag of Malaysia National flag of Mexico National flag of Morocco National flag of the Netherlands National flag of New Zealand National flag of Norway National flag of Peru National flag of the Philippines National flag of Portugal National flag of Rwanda National flag of Singapore National flag of South Africa National flag of Tunisia National flag of the United Arab Emirates National flag of the United Kingdom National flag of the United States National flag of Uruguay National flag of Venezuela

[ Albania; Algeria; Australia; Benin; Botswana; Brazil; Burkina Faso; Burundi; Cambodia; Canada; Central African Republic; Chile; China; Comoros; Denmark; Djibouti; Ecuador; France; Gabon; Guinea; Israel; Jamaica; Malawi; Malaysia; Mali; Mauritius; Mexico; Morocco; Nepal; Paraguay; Peru; Rwanda; Singapore; Trinidad and Tobago; Tunisia; United Arab Emirates; United Kingdom; Uruguay; Venezuela; Austria; Bosnia and Herzegovina; Ireland, Netherlands; New Zealand; Norway; Philippines; Portugal; South Africa; United States; Bhutan; Finland; Germany; Greenland; Hungary; Iran; Iceland; Nepal; Puerto Rico ]
Relative Max Speed
Hi: 200mph
Lo: 100mph
Aircraft Max Listed Speed (178mph).

Graph Average of 150 MPH.
Era Crossover
Pie graph section
Pie graph section
Showcasing Aircraft Era Crossover (if any)
Max Alt Visualization
Small airplane graphic
Production Comparison
Entry compared against Ilyushin IL-2 (military) and Cessna 172 (civilian) total production.
MACH Regime (Sonic)
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030
Aviation Timeline
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Image of the Airbus Helicopters AS350 Ecureuil/Astar

Mission Roles
Some designs are single-minded in their approach while others offer a more versatile solution to airborne requirements.
Some designs stand the test of time while others are doomed to never advance beyond the drawing board; let history be their judge.
Going Further...
The Airbus Helicopters AS350 Ecureuil/Astar Light Utility Helicopter (LUH) appears in the following collections:
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