Evektor SportStar / Harmony

The Evektor SportStar family is a Czech-built two-seat all-metal light sport aircraft that holds the distinction of being the first aircraft accepted by the FAA under the Special Light-Sport Aircraft (S-LSA) rule, approved in April 2005 shortly after the Sport Pilot/Light-Sport Aircraft rule was finalized. Manufactured by Evektor-Aerotechnik in Kunovice, Czech Republic — a company with 50+ years of continuous aircraft production at the same facility — the family has grown from the original SportStar into the refined Harmony variant sold today.

By the end of 2006, 600 SportStars were in service worldwide. The line received the AeroNews Network "S-LSA Aircraft of the Year" award in 2011. As of 2024, Evektor reports over 1,400 aircraft flying in more than 50 countries, with the Harmony well established in US and Australian flight school fleets.

The airframe is constructed almost entirely of anodized, corrosion-proofed aluminum using a combination of pop-riveting and adhesive bonding, a technique that Evektor claims extends fatigue life, reduces cabin noise, and improves crash energy absorption compared to purely riveted structures. The low-wing layout with a broad-view bubble canopy gives the SportStar/Harmony an ergonomic advantage over high-wing trainers. All flight controls use push-pull rods with no cables, giving the control feel a light, harmonized quality that pilots consistently praise.

Power comes from the ubiquitous Rotax 912 series engine. The 912ULS (100 hp) is standard; the Harmony also offers the fuel-injected 912iS Sport (100 hp, ~20% lower fuel burn) and the turbocharged Rotax 914 (115 hp) for high-altitude operations. Optional glider and banner towing capability is a factory-supported feature, which opens niche commercial markets closed to most LSA competitors.

The US dealership has been anchored by Dreams Come True Aviation (Midwest Sport Planes) in Dayton, Ohio, and Alion Aviation as an exclusive Harmony importer. Parts stock is maintained domestically but lead times for structural and airframe-specific components sourced from the Czech factory can run several weeks.

---

The Harmony represents the most significant evolution: the compound leading-edge wing (non-straight LE) pushes performance to the top of the current LSA category limits, and the wider/longer cabin makes side-by-side seating genuinely comfortable for two adult pilots. The Harmony's 30 ft 4 in wingspan versus the SportStar MAX's 28 ft 5 in gives it a meaningfully better glide ratio and approach stability.

---

Cruise speeds: The Harmony achieves approximately 110 KTAS at 75% power, which is essentially at the LSA speed limit. Real-world pilot reports confirm 108–112 knots in cruise at 4.5–5.0 gph depending on density altitude and prop pitch. The SportStar MAX produces 100–110 KTAS depending on prop adjustment. At 65% power, fuel burn drops toward 4.0 gph.

Stall characteristics: Vs0 at 37 KIAS (full flaps) is among the lowest in the LSA category, giving wide margins at landing approach speeds. The stall break is gentle and predictable. Vortex generators are available to push Vs0 toward 34–35 KIAS for backcountry-type operations, though the Harmony is not a bush plane.

Climb performance: The factory claims 900 fpm for the Harmony at sea level, max gross. Real-world pilot reports in the 840–1,000 fpm range are common. One owner reported 1,200 fpm at 3,000 ft MSL with full fuel and 200 lbs of occupant weight. The Rotax 912 loses power rapidly above 12,000–13,000 ft; operations above that altitude require the turbo 914 variant.

Density altitude: The normally aspirated 912ULS is notably sensitive to density altitude. At a 5,000 ft DA airport on a hot day, expect takeoff roll to stretch from 620 ft to 900+ ft and climb rate to fall below 600 fpm. The 914 turbo variant largely mitigates this but adds maintenance complexity.

Range: With 31.7 gallons usable and 4.5 gph burn, the Harmony carries about 700 nm standard range (with IFR reserves). The 912iS fuel-injected version stretches this to 837 nm at lower average consumption. The older SportStar MAX with 31.2 gallons and slightly higher fuel consumption runs approximately 590–700 nm depending on profile.

Crosswind: The Harmony's enlarged rudder and ailerons give demonstrated crosswind capability of 18 knots — competitive with most certified two-seat trainers.

Glide ratio: Sources report approximately 10:1 for the SportStar MAX and slightly better for the larger-winged Harmony. Best glide at approximately 63 KIAS.

---

Aircraft reference (Harmony, Rotax 912ULS):

• Max gross weight: 1,320 lb
• Typical empty weight (equipped): 720 lb
• Useful load: 600 lb
• Fuel capacity: 31.7 gal = 190 lb (at 6.0 lb/gal)
• Baggage max: 55 lb

Scenario 1 — Full fuel, two average pilots (170 lb each):

• Fuel: 190 lb
• Occupants: 340 lb
• Baggage: 55 lb
• Total payload + fuel: 585 lb
• Remaining: 15 lb margin → legally loaded with 31.7 gal and two average-weight pilots with minimal baggage
• Range: ~700 nm

Scenario 2 — Two pilots, full baggage, reduced fuel:

• Occupants: 340 lb
• Baggage: 55 lb
• Available for fuel: 600 – 395 = 205 lb → 34 gal → exceeds capacity; so full fuel (190 lb) works here
• In practice, two 200 lb pilots (400 lb) with 55 lb baggage = 455 lb of payload, leaving 145 lb for fuel = 24 gal = approximately 5.5 hours / ~580 nm

Scenario 3 — Heavier crew (220 lb each + 55 lb baggage):

• Occupants + baggage: 495 lb
• Available for fuel: 600 – 495 = 105 lb = 17.5 gal → approximately 3.5 hours / ~350 nm
• Takeoff roll increases noticeably; operating near gross weight limits performance margins

Key observations:

• The Harmony's 600 lb useful load is "best in class" per the manufacturer, and it shows — two average adults with full fuel and minimal bags is routine.
• At max gross, the 1,320 lb S-LSA limit is a hard cap; pilots over 200 lb must be more conscious of fuel load than in a Cessna 172.
• The 55 lb baggage limit (one medium suitcase) constrains longer trips for two travelers; plan to pack light.
• MOSAIC rule implementation — see mosaic — may raise the gross weight limit for aircraft like the Harmony in future, improving payload flexibility.
• The 912iS fuel-injected version's lower burn (~3.6 gph) extends range to ~837 nm at the same fuel load, meaningfully improving cross-country utility.

---

The SportStar MAX era (2009–2012) left the factory with a mix of steam gauges, early Dynon D-series EFIS, or TruTrak EFIS installations. Many used examples have been upgraded to modern glass.

Current Harmony factory options (2024):

Used SportStar MAX examples often have a Dynon D100 or D180 FlightDEK paired with an older Garmin 430W. These are functional but lack ADS-B Out and require upgrade for current airspace compliance. Budget $3,000–$6,000 for ADS-B retrofit (uAvionix tailBeacon or equivalent) plus installation.

The G3X and Dynon SkyView ecosystems are both well-supported in the LSA community. See avionics-pricing for current pricing on individual components and installation labor rates.

---

The Harmony/SportStar is an S-LSA, not FAA type-certificated under Part 23. Modifications must comply with the ASTM consensus standards framework — major changes require Evektor manufacturer approval and updated SLSA documentation rather than FAA-issued STCs.

Glider/Banner Tow: The SportStar/Harmony is factory-rated for towing sailplanes up to 700 kg gross and banners up to 140 m². This is a documented capability, not an aftermarket modification. A small number of US operators use SportStars commercially for banner towing.

---

See maintenance-ecosystem for general LSA maintenance context.

Rotax 912ULS engine:

• TBO: 2,000 hours (increased from early 1,500-hour limit).
• Overhaul cost: $12,000–$14,000 at an authorized Rotax overhaul center (Rotech Canada, Lockwood Aviation in US).
• New factory replacement engine: ~$17,500–$19,600 — competitive with overhaul for older engines.
• 5-year rubber replacement (mandatory regardless of hours): $2,500–$4,000.
• Gearbox overhaul: $450–$850 depending on wear.
• Carburetors: Rebuild or replace at each major service; $200–$400.
• Oil change: Every 100 hours or annually; 3 liters synthetic; ~$50 in materials.
• Typical fuel: Mogas (93 octane ethanol-free) preferred; AVGAS 100LL approved.

Airframe:

• Condition inspection (equivalent of annual): $800–$1,500 labor depending on region; S-LSA requires inspection by A&P or Light Sport Aircraft Repairman (Maintenance).
• All-metal construction is repairable by any A&P; no special composite skills required.
• Parts availability is rated fair: common consumables (filters, brake pads, tires) are readily available domestically. Structural and airframe-specific parts (control surfaces, canopy, fuselage panels) are stocked by Dreams Come True Aviation (Ohio) but may require 1–4 week lead times for items shipped from the Czech factory.
• Mechanic familiarity is specialist: Rotax service is widely understood, but Evektor-specific airframe knowledge is concentrated among dealers and a small community of experienced A&Ps. Not every FBO can sign off on condition inspection without familiarization.

Estimated annual operating cost (100 hours, private owner):

Flight school hourly costs (wet, maintenance included) have historically been cited at $50–$80/hour — competitive with or below Cessna 172 rates.

---

See valuation-methodology for general methodology. SportStar/Harmony-specific drivers:

Model generation matters significantly:

• Early SportStar Plus (pre-2009): $35,000–$65,000. Useful primarily for Sport Pilot training; limited useful load; aging avionics in most examples.
• SportStar MAX (2009–2012): $55,000–$95,000. Full 600 kg MTOW; good useful load. Value heavily influenced by avionics package and engine time.
• Harmony (2011–present): $75,000–$180,000. Wide range reflects new ($125,000–$180,000) vs. used examples with varying avionics, hours, and condition.

Key value drivers:

• Engine time to TBO: Rotax 912ULS TBO is 2,000 hours. Overhaul runs ~$12,000–$14,000. Discount ~$6–8/hour remaining below 500 hours remaining.
• Rotax 5-year rubber status: Complied = value-neutral; non-compliant = deduct $3,000–$4,000 plus buyer inconvenience.
• Avionics package: Dual Garmin G3X Touch + GFC 500 autopilot commands a $15,000–$25,000 premium over a basic analog/first-gen EFIS panel.
• ADS-B Out compliance: Non-compliant aircraft are a liability — expect $3,000–$5,000 discount.
• Ballistic parachute: Adds $3,000–$6,000 to market value.
• Damage history: Even repaired damage significantly depresses value given the thin LSA resale market.
• Flight school vs. private use: Flight school aircraft accrue hours faster and may have higher wear. A privately owned, low-hour Harmony commands a strong premium.

A 2024 fully-equipped Harmony with Garmin G3X Touch, GFC 500 autopilot, ADS-B in/out, and ~600 hours SNEW sold for $249,900 in the current market (altivationaircraft.com listing). New Harmony base price is approximately $125,000 with fully equipped examples reaching $168,000–$180,000.

---

EASA Airworthiness Directives (applicable to SportStar RTC; similar issues may affect S-LSA fleet):

Note: FAA-registered S-LSA aircraft are governed by manufacturer service bulletins and ASTM standards, not FAA ADs. Owners must comply with any mandatory Evektor service bulletins to maintain airworthiness. The EASA ADs listed above should be cross-referenced against the factory service bulletin library at evektor.com.

Known Pre-Buy Red Flags:

• Exhaust system: One documented catastrophic exhaust blow-out in cruise (owner report) on an early SportStar. Inspect the muffler and exhaust system carefully. EASA AD 2025-0081 addresses this directly.
• Rudder pedal assembly: EASA EAD 2025-0145-E (2025) mandates inspection of the foot control pedal / countershaft on the RTC; owners of S-LSA variants should request manufacturer guidance.
• Avionics age: SportStar Plus and MAX examples from 2006–2012 often have aging first-generation Dynon or steam gauges. Budget for ADS-B Out compliance if not already installed.
• Trim indicator failures: Reported by owners; inspect trim mechanism and indicator during pre-buy.
• Transponder reliability: Mode-C transponder failures reported on older avionics packages; ensure ADS-B Out compliance.
• Rotax 5-year rubber: Rotax 912 requires rubber component replacement every 5 years regardless of hours (fuel hoses, coolant hoses, carb rubbers). Confirm compliance — cost is $2,500–$4,000. An aircraft past its 5-year interval is a significant discounting factor.
• Import paperwork: Verify aircraft was properly imported and has complete FAA documentation (S-LSA acceptance letter, manufacturer's statement of compliance, airworthiness certificate).
• Hours vs. calendar time: At flight school operation intensities, engines can reach TBO in 5–8 years. Check logbooks carefully.

---

See insurance-underwriting for general LSA insurance framework.

Category: LSA fixed-gear, piston, factory-built S-LSA.

Typical costs (2024–2025):

Underwriting factors:

• S-LSA status is generally treated favorably — factory-built, full manufacturer documentation, no experimental stigma.
• Sport Pilot certificate holders face slightly higher rates vs. PPL or higher; minimum 5–10 hours in type often required.
• Flight school use roughly doubles premium over private owner use due to rental/instruction exposure.
• No instrument rating capability (for S-LSA version) reduces risk profile slightly.
• The aircraft's excellent safety record and well-documented maintenance requirements are viewed positively by underwriters.
• MOSAIC eligibility (when fully implemented) may allow heavier gross weight operations, which underwriters may need to reconsider at that time.

---