Lycoming IO-390

IO-390
Type Piston aero-engine
Manufacturer Lycoming Engines
First run 2002
Major applications Amateur-built aircraft



The Lycoming IO-390 engine is a horizontally opposed, four-cylinder aircraft engine, manufactured by Lycoming Engines.[1][2]

There is no carburetted version of the engine, which would have been designated O-390 and therefore the base model is the IO-390.[1][2]

Design and development

The engine was originally conceived in the 1970s as the IO-400-X, but the project was never pursued.[3]

The IO-390 family of engines, which Lycoming refers to as the IO-390-X, produce 200 hp (149 kW) to 210 hp (157 kW). The IO-390 was developed from the similar IO-360 engine, by using cylinders from the IO-580 to increase the O-360's cylinder bore. It features a tuned induction system, roller tappets and Slick Start ignition. The engine has a fuel injection system which meters fuel in proportion to the induction airflow with fuel vaporization taking place at the intake ports. The engine has a displacement of 390 cubic inches (6.39 litres). The cylinders have air-cooled heads.[1][2][3]

The IO-390 was first introduced at AirVenture 2002. It has a factory recommended TBO of 2000 hours and requires a dynafocal engine mount.[2][3]

The IO-390 was initially marketed through Lycoming's custom engine subsidiary, Thunderbolt Engines, prior to the engine's certification and was at that time only available for installation on non-certified aircraft. The IO-390 was certified on 30 March 2009 to FAR 33 effective February 1, 1965, as amended by 33-1 through 33-24.[1][2][3][4]

In January 2009 the base price of the IO-390-EXP version was USD$32,650.00.[5]

In November 2009 Lycoming announced that it had obtained an FAA Supplemental Type Certificate to replace the originally fitted Lycoming O-360 engines in the Mooney M20E, M20F and M20J with a new or remanufactured IO-390-A3A6 engine.[6] Also on November 12, 2009 Commander Aircraft received an STC for its model 112B using the MTV-12-B/188-59b propeller.[7]

Variants

IO-390-X
Four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, 390 cubic inches (6.39 litres), 210 hp (157 kW) at 2700 rpm, dry weight 308 lb (140 kg), The "X" designation is a generic indicator for all engines in the family.[1][2]
IO-390-EXP
Four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, 390 cubic inches (6.39 litres), 210 hp (157 kW) at 2700 rpm, dry weight 308 lb (140 kg), non-certified engine for experimental aircraft assembled by Lycoming's Thunderbolt division.[5]
IO-390-A1A6
The initial certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, 390 cubic inches (6.39 litres), 210 hp (157 kW) at 2700 rpm. This model includes provisions for a single-action controllable-pitch propeller. Certified 30 March 2009.[3][4]
IO-390-A3A6
Certified version: four-cylinder, fuel-injected, horizontally opposed, air-cooled direct drive, 390 cubic inches (6.39 litres), 210 hp (157 kW) at 2700 rpm. This model includes provisions for a single-action controllable-pitch propeller. This model is similar to the A1A6 but has its propeller flange bushings reindexed. Certified 27 August 2009.[8]
HIO-390
Developed for use on helicopters such as the Enstrom TH180.

Applications

Van's Aircraft RV-8s have been fitted with the IO-390 engine
Amateur-built aircraft
The Mooney M20J can have an IO-390-A3A6 installed under an STC
Certified aircraft
Military Aircraft

Specifications (IO-390-X)

Data from Lycoming Specialty Datasheet[2] & Type Certificate Data Sheet[4]

General characteristics

Components

Performance

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Lycoming Engines (n.d.). "Lycoming IO-390-X". Archived from the original on 21 March 2012. Retrieved 2009-01-07.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Lycoming Engines (2004). "Specialty datasheet" (PDF). Archived from the original on 26 May 2012. Retrieved 2008-12-20.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 Lycoming Engines (2008). "Lycoming's Certified IO-390 Series Engine". Archived from the original on 13 February 2012. Retrieved 2009-01-07.
  4. ↑ 4.0 4.1 4.2 Federal Aviation Administration (March 2009). "TYPE CERTIFICATE DATA SHEET NO. E00006NY". Retrieved 2009-06-21.
  5. ↑ 5.0 5.1 Lycoming Engines (January 2009). "Thunderbolt Engine Configurator". Archived from the original on 14 July 2011. Retrieved 2009-01-06.
  6. ↑ 6.0 6.1 Grady, Mary (November 2009). "Lycoming Gets IO-390 STC For Legacy Mooneys". Retrieved 2009-11-15.
  7. ↑ Federal Aviation Administration (12 November 2009). "Supplemental Type Certificate, STC Number: SA00291BO". Retrieved 30 March 2014.
  8. ↑ Federal Aviation Administration (August 2009). "TYPE CERTIFICATE DATA SHEET NO. E00006NY Revision 1". Retrieved 2009-11-19.
  9. ↑ Grady, Mary (July 2009). "Cessna News Update: ASTM Compliance For SkyCatcher". Retrieved 2009-07-28.
  10. ↑ 10.0 10.1 Burnside, Joseph E. (Jeb) (July 2009). "Lycoming: Bringing More Technology To An Airplane Near You". Retrieved 2009-07-28.
  11. ↑ AVweb Editorial Staff (August 2008). "AVwebFlash Complete Issue: Volume 14, Number 31e". Retrieved 2008-08-01.
  12. ↑ Aero-News Network (February 2009). "Lancair To Provide Colombian Air Force With Training Aircraft". Retrieved 31 July 2010.

External links