Bell 525 Relentless vs Piper M600 Sls vs Robinson R66 vs Sikorsky S 92

The Bell 525 Relentless and Sikorsky S‑92 are medium helicopters aimed at offshore, corporate/VIP, and utility missions, while the Robinson R66 is a light helicopter for shorter regional trips and training/utility work, and the Piper M600 SLS is a single‑engine turboprop airplane optimized for fast personal and business travel. In range, the M600 SLS typically offers the longest practical cross‑country reach among these, reflecting airplane efficiency, while the S‑92 and Bell 525 provide substantial helicopter range suited to overwater and remote operations; the R66 generally has the shortest range of the group. For passenger capacity, the S‑92 is the clear leader, commonly configured for around 19 passengers (with variants depending on mission). The Bell 525 is smaller than the S‑92 but still a multi‑passenger helicopter, typically accommodating roughly 12–16 seats depending on layout. The R66 is a five‑seat helicopter (including the pilot). The M600 SLS is typically configured for one pilot plus up to five passengers (six seats total).