Sikorsky S-64 Skycrane

"S-64" redirects here. For other uses, see S64 (disambiguation).

The Sikorsky S-64 Skycrane is an American twin-engine heavy-lift helicopter. It is the civil version of the United States Army's CH-54 Tarhe. It is currently produced as the S-64 Aircrane by Erickson Inc.

S-64 Skycrane / Aircrane
Erickson S-64 over EAA AirVenture Oshkosh 2009
Role	Aerial crane
National origin	United States
Manufacturer	Sikorsky Aircraft Erickson Inc.
First flight	9 May 1962
Status	In service
Primary user	Erickson Inc.
Number built	100
Developed from	Sikorsky CH-54 Tarhe

Development

Under Sikorsky

The Sikorsky S-64 was designed as an enlarged version of the prototype flying crane helicopter, the Sikorsky S-60. The S-64 had a six-blade main rotor and was powered by two 4,050 shaft horsepower (3,020 kW) Pratt & Whitney JFTD12A turboshaft engines. The prototype S-64 first flew on 9 May 1962 and was followed by two further examples for evaluation by the German armed forces.^[1] The Germans did not place an order, but the United States Army placed an initial order for six S-64A helicopters (with the designation YCH-54A Tarhe). Seven S-64E variants were built by Sikorsky for the civil market.

Under Erickson

Originally a Sikorsky Aircraft product, the type certificate and manufacturing rights were purchased from them by Erickson Air-Crane in 1992. Since that time, Erickson Air-Crane has become the manufacturer and world's largest operator of S-64 Aircranes and has made over 1,350 changes to the airframe, instrumentation, and payload capabilities of the helicopter. The Aircrane can be fitted with a 2,650 US gal (10,000 L) fixed retardant tank to assist in the control of bush fires, and it has proven itself admirably in this role.^[2] The helicopter is capable of refilling its entire tank of water in 45 seconds from a water slide 18 in (46 cm) thick.^[3]

S-64 Aircranes have been sold to the Italian and Korean Forest Services for fire suppression and emergency response duties. Those in the Erickson Air-Crane fleet are leased worldwide to organizations, companies, and federal government agencies for either short-term or longer term use in fire suppression, civil protection, heavy lift construction, and timber harvesting. Erickson is manufacturing new S-64s, as well as remanufacturing existing CH-54s.

Erickson gives each of its S-64s an individual name, the best-known being "Elvis", used in fighting fires in Australia alongside "The Incredible Hulk" and "Isabelle". Other operators, such as Siller Brothers, have followed with their Sikorsky S-64E, Andy's Pride. The Erickson S-64E nicknamed "Olga" was used to lift the top section of the CN Tower into place in Toronto, Ontario, Canada.^[4]

Variants

Sikorsky Skycrane

 

Skycrane "Olga" lifting a CN Tower antenna segment

S-64

Twin-engined heavy-lift helicopter, 3 built. 1 rebuilt as S-64E.

S-64A

Six test and evaluation helicopters for the US Army.

S-64B

Civil version of CH-54A, 7 built.

Erickson

S-64E

Upgraded CH-54A helicopters, plus one new build aircraft; 17 aircraft in total.

S-64F

Upgraded CH-54B helicopters; powered by two Pratt & Whitney JFTD12-5A engines; 13 aircraft in total.

S-64F+

Proposed upgraded version with new engines, avionics, and optional piloting.^[5]

Operators

 

An Erickson S-64 making a water drop

 

Italian Forest Service S-64F

  Italy

• Corpo Nazionale dei Vigili del Fuoco

  South Korea

• Korea Forest Service (6 in service)^[6]

  United States

• Columbia Helicopters (no longer in use)^[7]
• Erickson Air-Crane^[8]
• Evergreen Helicopters, Inc. (bought by Erickson Air-Crane)^[9]
• Helicopter Transport Services^[10]
• Los Angeles City Fire Department (contracted by Erickson Air-Crane)^[11]
• Los Angeles County Fire Department (contracted by Erickson Air-Crane)^[12]
• San Diego Gas and Electric (contracted by Erickson Air-Crane)^[13]
• Siller Helicopters^[14]

Incidents

• N189AC "Gypsy Lady" – crashed in Ojai, California on 1 October 2006. While operating for the USFS, the Erickson S-64 snagged a dip tank and the helicopter rolled over and crashed.^[15]
• N198AC "Shirley Jean" – S-64F; sold to European Air-Crane c.2006 as I-SEAD; crashed in Italy on 2007-04-26.^[16] Aircraft was destroyed in a post-crash fire.^[17]
• N248AC "Aurora" – S-64E; named after Aurora State Airport, home to Columbia Helicopters, former owner of aircraft.^[7] Crashed on 26 August 2004 in Corsica, killing its Canadian pilot and French co-pilot. The aircrane was chartered by the interior ministry to fight fires on the French Mediterranean island of Corsica. It had been fighting a wildfire as it went down near the village of Ventiseri, trying to return to a nearby military base, due to technical problems associated with inflight breakup.^[18][19]
• N173AC "Christine" – S-64E; ditched into a small dam within Melbourne's water catchment with no casualties during a firefighting operation in Gippsland, Victoria, Australia on 28 January 2019. The crew, consisting of 2 pilots and the flight engineer, were able to bail from the aircraft in 2-3m of water and swim to safety with no life-threatening injuries.^[20] The aircraft was rebuilt at Erickson's Central Point, Oregon facility and flew again in early 2021.

Specifications (S-64E)

 

Data from The International Directory of Civil Aircraft^[21]

General characteristics

• Crew: 3 (pilot, co-pilot), plus one rear-facing aft-stick operator during external-load operations^[a]
• Capacity: up to 5 total people^[b] / 20,000 lb (9,100 kg) payload
• Length: 70 ft 3 in (21.41 m)
• Height: 18 ft 7 in (5.66 m)
• Empty weight: 19,234 lb (8,724 kg)
• Max takeoff weight: 42,000 lb (19,051 kg)
• Powerplant: 2 × Pratt & Whitney JFTD12-4A (T73-P-1) turboshaft engines, 4,500 shp (3,400 kW) each
• Main rotor diameter: 72 ft 0 in (21.95 m)
• Main rotor area: 4,070 sq ft (378 m²)

Performance

• Maximum speed: 109 kn (125 mph, 202 km/h)
• Cruise speed: 91 kn (105 mph, 169 km/h)
• Range: 200 nmi (230 mi, 370 km) max fuel and reserves
• Hover ceiling IGE S-64E: 10,600 ft (3,200 m)
• Hover ceiling IGE S-64A: 9,700 ft (3,000 m)
• Rate of climb: 1,330 ft/min (6.8 m/s)

See also

 

Sikorsky installing monopole in Langkawi, Malaysia

•  Aviation portal

• Aerial firefighting
• Kaman K-MAX

Related development

• Sikorsky CH-53 Sea Stallion
• Sikorsky CH-54 Tarhe
• Sikorsky S-60

Aircraft of comparable role, configuration, and era

• Mil Mi-10

Related lists

• List of active United States military aircraft
• List of military aircraft of the United States
• List of rotorcraft
• List of surviving Sikorsky CH-54s

Notes

1. The minimum crew is two and the aft-stick operation can be done by the co-pilot
2. The helicopter has five seats but the two observer seats can not be used during external load operations, if the aft-stick seat is used when not used for external-load operations then the controls have to be disengaged and guarded.

References

1. Jackson, Paul (1976). German Military Aviation 1956–1976. Midland Counties Publications. ISBN 0-904597-03-2.
2. Mason, Ryan (20 October 2021). "Erickson S-64 Air Crane to Return to Australian Skies This Season". AerialFireMag.com. Retrieved 7 February 2022.
3. "Firefighting Services". Erickson Incorporated. from the original on 7 November 2017. Retrieved 27 April 2018.
4. . CNTower.ca. Archived from the original on 30 June 2020. Retrieved 29 June 2020.
5. Reim, Garrett (29 January 2020). "Erickson to demo S-64 Air Crane flying autonomously using Sikorsky Matrix". FlightGlobal.com. Retrieved 31 January 2020.
6. "Erickson delivers another Air Crane to Korea Forest Service". fireaviation.com. 2019. Retrieved 10 August 2021.
7. . Helispot. Archived from the original on 11 July 2011. Retrieved 20 December 2010.
8. . Erickson Air-Crane, Inc. 2013. Archived from the original on 29 March 2013. Retrieved 26 January 2013.
9. (PDF). Evergreen aviation. Archived from the original (PDF) on 12 May 2012. Retrieved 26 January 2013.
10. "HTS Fleet". htshelicopters.com. from the original on 7 November 2012. Retrieved 26 January 2013.
11. "LAFD S-64". emergencyrigs.net. from the original on 21 May 2014. Retrieved 26 January 2013.
12. "L.A. County S-64". Yahoo. Archived from the original on 21 May 2014. Retrieved 17 March 2013.
13. "Erickson Air-Crane buys Sun Bird aircraft from San Diego Gas & Electric". Helihub. 7 October 2012. from the original on 9 October 2012. Retrieved 26 January 2013.
14. . Siller helicopters. Archived from the original on 28 September 2013. Retrieved 20 September 2013.
15. "NTSB report (LAX07TA001)". Ntsb.gov. from the original on 14 January 2016. Retrieved 7 September 2015.
16. . Archived from the original on 28 September 2007.
17. . Ntsb.gov. 26 April 2007. Archived from the original on 19 February 2009. Retrieved 20 December 2010.
18. . Ntsb.gov. 26 August 2004. Archived from the original on 31 July 2010. Retrieved 20 December 2010.
19. "NTSB probes Air-Crane crash – September 9, 2004". Archive.mailtribune.com. 9 September 2004. Archived from the original on 7 July 2012. Retrieved 20 December 2010.
20. "Aircrane extracted after crashing into lake in Australia". fireaviation.com. Retrieved 18 April 2021.
21. Frawley, Gerard: The International Directiory of Civil Aircraft, 2003–2004, page 195. Aerospace Publications Pty Ltd, 2003. ISBN 1-875671-58-7

External links

 

Wikimedia Commons has media related to Sikorsky S-64 Skycrane.

External image
Line drawing of Skycrane

• Erickson Air-Crane website
• FAA Type Certificate Data Sheet 19 February 2009 at the Wayback Machine
• CN Tower antenna being lifted into place – footage 1975