The Sikorsky S-58 helicopter represents a pinnacle of aviation engineering, celebrated for its lifting power and adaptability. While initially developed for military use, this aircraft has successfully transitioned to civilian applications, particularly in HVAC and rooftop unit installations.
Historical Background
First introduced in the 1950s, the Sikorsky S-58 was created to fulfill the U.S. Navy’s demand for an anti-submarine helicopter. Its first flight took place on March 8, 1954, and it soon became essential across multiple military services, including the Army and Marines. Production exceeded 2,300 units, with the aircraft performing various missions from troop transport to rescue operations.
Technical Details
Sikorsky S-58C D-HAUG in service on behalf of Meravo-Luftreederei Fluggesellschaft | Photo: airliners.net
- Engine: Wright R-1820 Cyclone radial engine
- Top Speed: 123 mph
- Cruise Speed: 97 mph
- Range: 182 miles
- Empty Weight: 7,899 lbs
- Maximum Takeoff Weight: 14,000 lbs
- Rotor Diameter: 56 feet
- Fuselage Length: 46 feet 9 inches
- Height: 14 feet 3.5 inches
These specifications highlight the S-58’s ability to manage heavy payloads, perfect for demanding lifting tasks.
Lifting Capacity
The Sikorsky S-58 can transport substantial external loads, with a maximum payload capacity reaching 6,100 pounds under optimal conditions. This capability has made it valuable for numerous heavy-lift operations outside military use, including construction projects and equipment installations.
HVAC/RTU Installation Role
For construction and HVAC professionals, the S-58 excels at placing rooftop units where cranes cannot operate. Its hovering precision and lifting strength allow faster installations with less disturbance to nearby areas. These qualities make it particularly useful for urban projects with space limitations or tight schedules.
Model Variations
West German Navy Sikorsky H-34G and Royal Danish Air Force Sikorsky S-61A at Ypenburg air base, the Netherlands, 1970 | Photo: Master Sgt. H. Robinson
The S-58 received multiple upgrades throughout its service life to improve performance and expand capabilities:
- S-58T: A turbine-powered model featuring Pratt & Whitney Canada PT6T-3 Twin-Pac engines for increased power and better fuel economy.
- Westland Wessex: A British version using a single Napier Gazelle turboshaft engine, primarily operated by British military forces for transport and anti-submarine duties.
These adaptations helped the helicopter evolve with technological advances while maintaining its fundamental design advantages.
Current Operations
Even with its age, the Sikorsky S-58 continues flying with civilian operators globally. Its durable build, roomy cabin, and lifting performance keep it relevant for heavy-lift operations. The helicopter’s ongoing service proves its well-designed nature and lasting value.
Watch below as a Sikorsky S-58T helicopter expertly lifts a 2,850 lb HVAC unit over Southern Glazer’s distribution warehouse in Las Vegas. Coordinated by Fair Lifts in partnership with Air Design Systems NV, this aerial lift showcases precision, power, and efficiency—demonstrating why helicopter HVAC lifts are the smart solution when cranes can’t reach.
The Verdict: A Helicopter Built to Last
The Sikorsky S-58 helicopter maintains its reputation through sturdy construction and flexibility. From military beginnings to current heavy-lift jobs like HVAC installations, the S-58 persists as a dependable resource. Its powerful lifting, accurate placement, and multi-purpose design guarantee its continued importance in aviation and industrial work.