Light-sport aircraft

Three types of Light Sport Aircraft. In the foreground, an E-LSA Antares USA Ranger weight-shift control trike. In the background, an S-LSA Evektor SportStar and an L-LSA Zlin Aviation Savage Cub.

A light-sport aircraft, also known as light sport aircraft or LSA, is a small aircraft that is simple to fly and that meets certain regulations set by a national aviation authority restricting weight and performance. For example, in Australia the Civil Aviation Safety Authority defines a light-sport aircraft as a heavier-than-air or lighter-than-air craft, other than a helicopter, with a maximum gross takeoff weight of not more than 560 kilograms (1,230 lb) for lighter-than-air craft; 600 kilograms (1,300 lb) for heavier-than-air craft not intended for operation on water; or 650 kilograms (1,430 lb) for aircraft intended for operation on water.^[1] It must have a maximum stall speed of 45 knots (83 km/h; 52 mph) in landing configuration; a maximum of two seats; there is no limit on maximum speed unless it is a glider, which is limited to Vne 135 kn CAS; fixed undercarriage (except for amphibious aircraft, which may have repositionable gear, and gliders, which may have retractable gear); an unpressurized cabin; and a single non-turbine engine driving a propeller if it is a powered aircraft.^[1]

In the United States, several distinct groups of aircraft may be flown as light-sport.^[2] Existing certificated aircraft and experimental, amateur-built aircraft that fall within the definition listed in 14CFR1.1^[3] are acceptable, as are aircraft built to an industry consensus standard rather than FAA airworthiness requirements. The accepted consensus standard is defined by ASTM Technical Committee F37.^[4] Aircraft built to the consensus standard may be factory-built and sold with a special airworthiness certification (S-LSA) or may be assembled from a kit under the experimental rules (E-LSA) under experimental airworthiness. A company must have produced and certified at least one S-LSA in order to be permitted to sell E-LSA kits of the same model. E-LSA kits are not subject to the normal experimental amateur built (E-AB) requirement 14CFR21.191^[5] which identifies an aircraft, the "major portion of which has been fabricated and assembled by persons who undertook the construction project solely for their own education or recreation."

United States - requirements

The Light Sport Aircraft Rule: The FAA defines a light sport aircraft as an aircraft, other than a helicopter or Powered-Lift that, since its original certification, has continued to meet the following:^[6]

1. Max. Gross Takeoff Weight: 1,320 lbs (600 kg) or 1,430 lbs for seaplanes (650 kg)
2. Max. Stall Speed: 51 mph / 45 knots CAS
3. Max. Speed in Level Flight (at sea level at standard temperature):138 mph / 120 knots CAS
4. Seats: Two (max.)
5. Engines / Motors: One (max. if powered.)
6. Propeller: Fixed-pitch or ground adjustable
7. Cabin: Unpressurized
8. Fixed-pitch, semi-rigid, teetering, two-blade rotor system, if a gyroplane.
9. Landing Gear: Fixed (except for seaplanes and gliders)

United States - aircraft licensing

• Can be manufactured and sold ready-to-fly under a new Special Light Sport Aircraft certification category. Aircraft must meet industry consensus standards. Aircraft under this certification may be used for sport and recreation, flight training, and aircraft rental.
• Can be licensed Experimental Light Sport Aircraft (E-LSA) if kit- or plans-built. Aircraft under this certification may be used only for sport and recreation and flight instruction for the owner of the aircraft.
• Can be licensed Experimental Light Sport Aircraft (E-LSA) if the aircraft has previously been operated as an ultralight but does not meet the FAR Part 103 definition of an ultralight vehicle. These aircraft must have been transitioned to E-LSA category no later than January 31, 2008.
• Will have a standard FAA registration - N-number.
• Category and class includes: Airplane (Land/Sea), Gyroplane, Airship, Balloon, Weight-Shift-Control ("Trike", Land/Sea), Glider, and Powered Parachute.
• U.S. or foreign manufacture of light sport aircraft is authorized.
• Aircraft with a standard airworthiness certificate that meet above specifications may be flown by sport pilots. However, the aircraft must remain in standard category and cannot be changed to light sport aircraft category.
• May be operated at night if the aircraft is equipped per FAR 91.205, if such operations are allowed by the aircraft's operating limitations and the pilot holds at least a Private Pilot certificate and a minimum of a third-class medical.

United States - FAA certification

Several different kinds of aircraft may be certificated as LSA. Airplanes (both powered and gliders), rotorcraft (gyroplanes only, not helicopters), powered parachutes, weight-shift control aeroplanes (commonly known as trikes), and lighter-than-air craft (free balloons and airships) may all be certificated as LSA if they fall within the weight and other guidelines established by the local governing authority.

The US definition of an LSA is similar to some other countries' definition of "microlight" or "ultralight" aircraft. Except for the LSA's relatively generous MTOW of 1320 pounds, the other countries' microlight definitions are typically less restrictive, not limiting airspeed or the use of variable-pitch propellers.

By contrast, the US FAA has a separate definition of ultralight aircraft defined in Federal Aviation Regulations. Aircraft falling within the US ultralight specifications are extremely lightweight (less than 254 pounds if powered, or 155 pounds if unpowered), are intended for manned operation by a single occupant, have a fuel capacity of five US gallons (about 19 litres) or less, a maximum calibrated airspeed of not more than 55 knots (102 km/h), and a maximum stall speed of not more than 24 knots (44 km/h). Ultralight aircraft in the US do not require pilot licensing, medical certification, or aircraft registration.

Aircraft certified as light-sport aircraft exceed the limitations defined for ultralight aircraft and require that the pilot possess, at a minimum, a sport pilot certificate. Among these aircraft were found those that were specifically designed to meet the LSA requirements, as well as overweight ultralights (commonly known as "fat ultralights") that previously were operated in technical violation of 14 CFR 103.

In addition to aircraft specifically designed to meet the LSA requirements, certain certificated aircraft, such as the original Piper Cub, happen to fall within the definition of a light-sport aircraft and can be operated by individuals holding FAA sport pilot certificates. The aircraft can not be re-certificated as LSA, however: although sport pilots may operate conventionally certificated aircraft that fall within the definition of an LSA, the aircraft themselves continue to be certificated in their original categories.

Several designers and manufacturers of experimental aircraft kits have developed models that are compliant with the light-sport aircraft rules.

In June 2012 the FAA indicated that they would re-visit the LSA program after their own studies indicated that "the majority" of LSA manufacturers they had inspected failed to show that they were in compliance with the standards. The FAA announcement said that as a result the "original policy of reliance on manufacturers' Statements of Compliance" ... "should be reconsidered."^[7] AOPA points out that this is a normal development of a maturing standard^[8] and does not expect any significant changes in the rules, only more scrutiny by FAA to assure compliance.

United States - FAA certified models

Aircraft that met light-sport requirements when the rules were announced appear in FAA's list: Light Sport Aircraft: Existing Type Certificated Models.

Some additional models of S-LSA, E-LSA and E-AB aircraft that meet light-sport requirements are listed here.

Definition in Europe

In June 2011, the European Aviation Safety Agency published CS-LSA Certification Specifications for Light Sport Aeroplanes.^[10] This introduced a new category of manufactured sport aeroplanes similar to the light-sport category found in the USA and elsewhere.

Definition in Australia

A new certification category for Light Sport Aircraft came into effect on 7 January 2006.^[11] This category does not replace the previous categories, but creates a new category with the following characteristics:^[12]

• A maximum take-off weight of 600 kg (1,323 lb) or 650 kg (1,433 lb) for an aircraft intended and configured for operation on water or 560 kg (1,235 lb) for a lighter-than-air aircraft.
• A maximum stalling speed in the landing configuration (Vso) of 45 kn (83 km/h) CAS.
• Maximum of two occupants, including the pilot.
• A fixed landing gear. A glider may have retractable landing gear. (For an aircraft intended for operation on water, a fixed or repositionable landing gear)
• A single, non-turbine engine fitted with a propeller.
• A non-pressurised cabin.
• If the aircraft is a glider a maximum never exceed speed (Vne) of 135 kn (250 km/h) CAS

Light-sport aircraft can be factory-manufactured aircraft or kits for amateur-building.

See also

• Canadian Advanced Ultralight Aircraft
• List of ultralight helicopters

References

External links

Wikimedia Commons has media related to Light sport aircraft.

• Light-Sport Aircraft - U.S. Federal Aviation Administration (FAA)
• Sport Pilot and Light Sport Aircraft - Experimental Aircraft Association (EAA)
• Sport Pilot and Light-Sport Aircraft - Aircraft Owners and Pilots Association (AOPA)
• Light Aircraft Manufacturers Association (LAMA) home page
• Light Sport Aircraft list - specifications and photos of possible LSA or E-LSA airplanes