Engineering:Partenavia P.68

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Short description: Small twin engines transport aircraft
P.68
D-GFPG (17004135598).jpg
Partenavia P.68B
Role Light transport
Manufacturer Partenavia
Vulcanair
Designer Luigi Pascale
First flight 25 May 1970[1]
Status In service
Produced 1970-present
Number built 431+[citation needed]

The Partenavia P.68, now Vulcanair P68, is a light aircraft designed by Luigi Pascale and initially built by Italian company Partenavia. It made its first flight on 25 May 1970, its type certification was granted on 17 November 1971 and was transferred to Vulcanair in 1998. The original six-seat high-wing monoplane is powered by twin piston engines and is used for light transport and training. The P.68 Observer is an observation aircraft variant, and it was developed in a stretched, 10/11-seat twin turboprop derivative.

Development

A P.68 Observer presented by Vulcanair at the AERO Friedrichshafen 2016

Partenavia P.68 Victor

The type certification for the P.68 Victor, a twin piston engine, high wing monoplane with fixed tricycle landing gear was applied for on 22 January 1969.[2] The Partenavia P.68 was designed as a six-seat light transport and trainer powered by two 200 hp (149 kW) Lycoming IO-360 engines, it made its first flight on 25 May 1970 at Naples.[1] The type certification for the 9.20 m (30.18 ft) long P.68 was granted by the Italian Civil Aviation Authority on 17 November 1971 for an 1860 kg (4100 lb) MTOW.[2] It was approved by the FAA on 7 December 1971.[3] After a 300 h of flight tests, production was to start in May 1972 in a new plant at Naples Capodichino Airport at a rate of three aircraft per month.[4] The prototype was built at Arzano, Italy, production began with 14 pre-production aircraft at new facilities in Casoria, Italy.

The longer, 9.35 m (30.68 ft) P.68B Victor certification was applied for on 18 October 1973 and granted on 24 May 1974 for a 1960 kg (4321 lb) MTOW.[2] Its unit cost was United States dollar 82,000 in 1974[5] (US$425000 today). Its fuselage was lengthened to create more space in the cockpit.

P.68R with retractable undercarriage

Both derived from the P.68B and 9.55 m (31.33 ft) long, the P.68R Victor has a retractable landing gear and was certified on 31 July 1978 while the P.68C has a nose allowing a weather radar, larger fuel tanks and increased weights, and was certified on 23 July 1979 with a 1990 kg (4387 lb) MTOW. The P.68C-TC, certified on 29 April 1980, has turbocharged, 210 hp (157 kW) Lycoming TIO-360-C1A6D engines.[2] In 2021, the equipped price of the P.68C was US$1.25M, US$1.5M for the P.68R and US$1.55M for the P.68C-TC.[6]

Partenavia P.68 Observer

P.68 Observer with a transparent nose

The 9.43 m (30.94 ft) long P.68 Observer, derived from the P.68B with a transparent fuselage nose, adapted systems and larger fuel tanks, was certified on 12 June 1980.[2] The observation aircraft for law enforcement were initially conversions of existing aircraft by German Sportavia-Putzer.

The 9.15 m (30.02 ft) long P.68TC Observer, a P.68 "Observer" with turbocharged engines, was certified on 18 June 1985.

The 9.54 m (31.30 ft) long P.68 "Observer 2 is a P.68 "Observer", with increased weights, upturned wing tips and modified systems, and was certified on 30 November 1989 for a 2084 kg (4594 lb) MTOW.[2] −

Partenavia AP68TP-600 Viator

Turboprop-powered AP.68TP-600 Viator with stretched fuselage and retractable gear

The 10.89-11.27 m (35.73-36.97 ft) long, retractable gear AP68TP-600 "Viator", with two 328 hp (245 kW) Allison 250-B17C turboprops, has a 2850–3000 kg (6283-6614 lb) MTOW and was certified on 16 October 1986. In 2023, its equipped price was $3.5M.[7]

Partenavia AP68TP-300 Spartacus

The 9.90 m (32.48 ft) long, fixed gear AP68TP-300 Spartacus was certified on 10 December 1983 with two 328 hp (245 kW) Allison 250-B17C turboprops and a 2600 kg (5732 lb) MTOW.[2] the nine-seater development was helped by Aeritalia, the prototype first flew in 1978 with a retractable undercarriage.

Based in Casoria, Naples, and already manufacturing Partenavia spares, Vulcanair (then Air Samanta) acquired the type certificate, aircraft spares and the former production plant in Milan for L1.4 billion ($780,000) in April 1998.[8] The type certificate was transferred on 25 November.[2] Vulcanair offers the P.68R, P68C, P.68C-TC, P.68TC Observer, P.68 Observer 2 and AP68TP-600 Viator.[9]

Variants

Type certificate data sheet[2]
Variant Certified MTOW Engines Length Built[citation needed]
P.68 Victor 17 Nov 1971 1860 (4100 lb) 200 hp (149 kW)
IO-360-A1B6		 9.20 m (30.18 ft) 14
P.68B Victor 24 May 1974 1960 kg (4321 lb) 9.35 m (30.68 ft) >190
P. 68 Observer 12 Jun 1980 9.43 m (30.94 ft) >21
P.68R Victor 31 Jul 1978 9.55 m (31.33 ft) 1
P.68 Observer 2 30 Nov 1989 2084 kg (4594 lb)
P.68C 23 Jul 1979 1990 kg (4387 lb) >114
P.68C-TC 29 Apr 1980 210 hp (157 kW)
TIO-360-C1A6D
P.68TC Observer 18 Jun 1985 9.15 m (30.02 ft)
AP68TP-300 Spartacus 10 Dec 1983 2600 kg (5732 lb) 328 hp (245 kW)
Allison 250-B17C 		9.90 m (32.48 ft) >13
AP68TP-600 Viator 16 Oct 1986 2850–3000 kg
(6283-6614 lb) 		10.89-11.27 m
(35.73-36.97 ft)		 >6

Operators

Military and government operators

Italian State Police P.68 Observer
Hesse State Police P.68 Observer 2
 Bahamas
  • Royal Bahamas Defence Force[10]
 Chile
 Germany
  • Hesse State Police[11]
 Italy
  • Italian State Police[12]
 United Kingdom
  • National Police Air Service[13]
 United States
  • California Department of Fish and Game[14]
  • New York State Police[15]
  • Tennessee Wildlife Resources Agency[16]
  • Washington State Department of Natural Resources[17]

Former

 Bophuthatswana

Incidents and accidents

The P.68 was involved in 86 accidents and incidents worldwide as reported in the Aviation Safety Network wiki database, including 58 hull losses.[19]

September 11, 1983: A P.68C, N29561, performing an aerobatic display broke up in flight during an airshow in Plainview, Texas. The NTSB report revealed that analysis of the video showed the aircraft performed a fly-by over the runway, exceeding its Vne (Velocity, never-exceed) speed by 27 knots. The pilot then executed a sharp nose-up pitch change of about 8 degrees, which spiked the aircraft's dynamic load factor to 8.3Gs and caused both wings to fail in the main spar just outside both engine nacelles then separate from the aircraft, which then began rotating, causing the rear fuselage to twist along its length between its cabin and empennage. The aircraft then plummeted 250 feet down just beyond the group of spectators.[20]

Specifications (P.68C)

The Observer cockpit with an EFIS flight deck
The P.68 cabin

Data from Vulcanair brochure[9]

General characteristics

  • Crew: one
  • Capacity: plus five passengers
  • Length: 31 ft 0 in (9.55 m)
  • Wingspan: 39 ft 4 in (12 m)
  • Height: 12 ft 3 in (3.40 m)
  • Empty weight: 3,130 lb (1,420 kg)
  • Max takeoff weight: 4,594 lb (2,084 kg)
  • Fuel capacity: 177 US gal (147 imp gal; 670 L)
  • Powerplant: 2 × Lycoming IO-360-A1B6 air-cooled horizontally-opposed engine, 200 hp (150 kW) each
  • Propellers: 2-bladed

Performanceat sea level

  • Cruise speed: 160 kn (187 mph, 301 km/h) at 10,000 ft (3,050 m) (econ cruise)
  • Stall speed: 57 kn (66 mph, 106 km/h) (flaps down, power off)
  • Range: 1,103 nmi (1,269 mi, 2,043 km) (econ cruise, standard fuel)
  • Service ceiling: 18,000 ft (5,490 m)
  • Rate of climb: 1,100 ft/min (6.0 m/s)

See also

Notes

References

  1. ↑ 1.0 1.1 "Italian Twin". Flight International. 11 June 1970. https://www.flightglobal.com/pdfarchive/view/1970/1970%20-%201035.html. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 "Type certificate data sheet A.385 Vulcanair P.68". EASA. 18 October 2017. https://www.easa.europa.eu/sites/default/files/dfu/TCDS%20EASA%20P68%20-%20EASA%20A%20385%20issue%206.pdf. 
  3. ↑ "Type Certificate data sheet A31EU". FAA. June 13, 2019. http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/120df1b9b90580c686258418005b9ebf/$FILE/A31EU_Rev26.pdf. 
  4. ↑ "Partenavia Victor certificated". Flight International. 30 December 1971. https://www.flightglobal.com/pdfarchive/view/1971/1971%20-%202821.html. 
  5. ↑ "Guide to business aircraft". Flight International. 19 September 1974. https://www.flightglobal.com/pdfarchive/view/1974/1974%20-%201476.html. 
  6. ↑ "Purchase planning handbook - pistons table". Business & Commercial Aircraft. Second Quarter 2021. https://infogram.com/bca-table-2023-pistons-1h7z2l89o987x6o. 
  7. ↑ "Purchase planning handbook - turboprops table". Business & Commercial Aviation. Second Quarter 2023. https://infogram.com/bca-table-2023-turboprops-1ho16vorwrxm84n. 
  8. ↑ "Vulcan Air resurrects Partenavia P.68 line". Flightglobal. 15 April 1998. https://www.flightglobal.com/news/articles/vulcan-air-resurrects-partenavia-p68-line-35494/. 
  9. ↑ 9.0 9.1 "Brochure". Vulcanair. 17 March 2015. http://www.vulcanair.com/files/files/Brochure%20Vulcanair%2008-10-18.pdf. 
  10. ↑ 10.0 10.1 "World Air Forces 2021". Flightglobal Insight. 2021. https://www.flightglobal.com/reports/world-air-forces-2021/141456.article. Retrieved 4 May 2021. 
  11. ↑ "Flight history for aircraft - D-GHEA". flightradar24.com. https://www.flightradar24.com/data/aircraft/d-ghea. Retrieved 12 May 2021. 
  12. ↑ "Special Mission P68 Observer". vulcanair.com. https://www.vulcanair.com/special-mission-p68-observer. Retrieved 12 May 2021. 
  13. ↑ Craig, Peter (20 August 2019). "New police planes to patrol skies over North East Lincolnshire". Grimsby Live. https://www.grimsbytelegraph.co.uk/news/grimsby-news/new-planes-patrol-skies-over-3224381. 
  14. ↑ "DFG and Partners use Aircraft and Submersible Camera to Count Pacific Sardine". cdfgnews.wordpress.com. https://cdfgnews.wordpress.com/2012/10/15/dfg-and-partners-use-aircraft-and-submersible-camera-to-count-pacific-sardine/. Retrieved 4 May 2021. 
  15. ↑ "New York State Police Aviation Unit". troopers.ny.gov. https://troopers.ny.gov/specialty-units. Retrieved 4 May 2021. 
  16. ↑ "N76TW Aircraft Registration". FlightAware. https://flightaware.com/resources/registration/N76TW. 
  17. ↑ "Aircraft Inquiry". https://registry.faa.gov/aircraftinquiry/Search/NNumberResult?NNumbertxt=357PN. 
  18. ↑ * Hatch, Paul F. (July 1985). "Air Forces of the World: Bophuthatswana Air Force". Air Pictorial 47 (7): 249. 
  19. ↑ "Wiki Database - Type = P.68". Aviation Safety Network. 1 July 2019. https://aviation-safety.net/wikibase/dblist.php?AcType=P68. 
  20. ↑ "ASN Wikibase Occurrence # 40417". Aviation Safety Network. 24 January 2020. https://aviation-safety.net/wikibase/40417. 

Further reading



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