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Purchase price is only one part of the decision. Figures are indicative estimates at the typical market year for each model.

Decision factorEnstrom 280FX SharkView aircraft profileMD Helicopters MD 520NView aircraft profileSikorsky / Schweizer S-330SPView aircraft profile
Typical market year201020102002
Estimated purchase€450k€873k€306k
Annual cash cost at 80 h€80k€129k€108k
Five-year cash outlay€852k€1.52m€847k
Cruise speed90 kt137 kt93 kt
Advertised range230 nm135 nm242 nm
Seats343
Realistic payload273 kg270 kg270 kg
Runway needVerticalVerticalVertical
Data confidencePreliminary, verify source data before decidingPreliminary, verify source data before decidingPreliminary, verify source data before deciding
Main trade-offStable, durable and hot-day capable for a piston helicopter, but three seats and specialist support limit utility.The MD 520N combines 4-seat helicopter capability with about 135 NM reported range and about 137 kt reported cruise, while payload, runway and operating-cost figures remain indicative and should be verified for the specific aircraft before making a decision.The S-330SP combines 4-seat helicopter capability with about 242 NM reported range and about 93 kt reported cruise, while payload, runway and operating-cost figures remain indicative and should be verified for the specific aircraft before making a decision.
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