NAMC YS-11
| YS-11 | |
|---|---|
 | |
| A Japan Air Self-Defense Force YS-11 (2011) | |
| Role | Turboprop Airliner |
| Manufacturer | Nihon Aircraft Manufacturing Corporation |
| First flight | August 30, 1962 |
| Introduction | March 30, 1965, for All Nippon Airways (first passenger flight with Japan Air Commuter in 1965) |
| Status | In limited service |
| Produced | 1962–1974 |
| Number built | 182 |
|
| |
The NAMC YS-11 is a turboprop airliner built by a Japanese consortium, the Nihon Aircraft Manufacturing Corporation. The program was initiated by the Ministry of International Trade and Industry in 1954, the aircraft was rolled out in 1962, and production ceased in 1974.
Development and design
In the mid-to-late 1950s, the Japanese Ministry of International Trade and Industry identified a requirement for a short-haul airliner to replace Douglas DC-3s flying on Japan's domestic routes, and encouraged companies in Japan's aircraft industry to collaborate to develop and produce the new airliner. A joint venture between Mitsubishi Heavy Industries, Kawasaki Heavy Industries, Fuji Heavy Industries (now better known as the parent company of automobile manufacturer Subaru), Shin Meiwa, Showa Aircraft Industry Company and Japan Aircraft Industry Company was set up in 1957, being formalised as the Nihon Aeroplane Manufacturing Company (NAMC) in 1959.[1][2]
NAMC designed a low-winged twin-turboprop monoplane seating 60 passengers. Jiro Horikoshi, the designer of the Mitsubishi A6M Zero fighter was involved in designing it.[3][4] Although the aircraft was mainly designed and manufactured in Japan, the engines were built by Rolls-Royce, with the 2,275 kW (3,050 ehp) Rolls-Royce Dart RDa.10/1 being selected for the new aircraft.[5] Electronic equipment, avionics, mechanical and fuselage components were supplied either by Japanese companies or foreign suppliers during the YS-11's production lifetime. The twin-engined YS-11 delivered similar operational performance to the four-engined Vickers Viscount, and had 50% more capacity than the similarly configured Fokker F27 Friendship.
The first prototype made its maiden flight from Nagoya Airport on August 30, 1962, with the second prototype flying on December 28, 1962. It received its Japanese Type certificate on August 25, 1964, with American Federal Aviation Administration (FAA) certification following on September 9, 1965.[5]
182 were produced in total, of which 82 were exported to 15 countries.[6]
The last examples off the production line, mostly delivered to the Japan Air Self-Defense Force (i.e. YS-11A-402 EA/EB), were fitted with license-built General Electric T64-IHI-10J engines.
Operational history
The first production YS-11 flew on October 23, 1964 and was delivered on March 30, 1965, with initial airline operations by Toa Airways beginning in April 1965.[5] At first, deliveries were mainly to Japanese airlines, and NAMC developed the YS-11A, with higher gross weight, to make the aircraft more attractive to the North American market, and in particular to meet the requirements of Piedmont Airlines, which ordered ten YS-11A-200s, with an option for an additional ten aircraft.[7] Orders slowed after the needs of the Japanese commuter airlines for which it had been designed were met. This, together with losses growing to $600 million,[8] resulted in production being stopped after completion of 182 aircraft, with the last YS-11 being delivered to the Japanese Maritime Self-Defence Force on May 11, 1973.[9]
The YS-11 was slowly phased out by airlines in Japan due to new directives issued by the Ministry of Land, Infrastructure, Transport and Tourism requiring all commercial aircraft in Japan to be fitted with a Traffic Collision Avoidance System (TCAS). Aircraft without TCAS were forced to cease operations at the end of 2006. Since equipping a YS-11 with TCAS would have cost ¥100 million (about US$1 million), a refit was deemed economically unsound. Aircraft still in flying condition were sold to foreign companies. On September 30, 2006, Japan Air Commuter Flight 3806 marked the final flight for a YS-11 in Japan's commercial aviation industry.[10] In 2007, the YS-11 was added to the Mechanical Engineering Heritage of Japan as item number 13. As of 2014, 15 are operated by the Japanese military, and two in Mexico.[11]
Variants
- YS-11
- YS-11-100
- Initial production variant. 23,500 kg (51,810 lb) gross weight. 48 built.[7]
- YS-11A-200
- Increased gross weight (24,500 kg (54,010 lb) passenger airliner.[7]
- YS-11A-300
- Combi version of YS-11-200, fitted with large cargo door and capable of carrying both passengers and freight.[7]
- YS-11A-400
- Pure cargo version of -200, used only by Japanese defence forces.[7]
- YS-11A-500
- Passenger airliner with further increased (25,000 kg (55,110 lb)) gross weight produced from 1970.[12]
- YS-11A-600
- Combi version of -500.[13]
- YS-11E
- JASDF "Super YS" powered by T64-IHI-10E.
Customer variants
- YS-11-101: TOA Domestic Airlines
- YS-11-102: All Nippon Airways
- YS-11-103: Japan Air Self Defense Force
- YS-11-104: Japan Civil Aviation Bureau
- YS-11-105: Japan Air Self Defense Force
- YS-11-106: Japan Domestic Airlines
- YS-11-107: Filipinas Orient Airways
- YS-11-108: Japan Domestic Airlines
- YS-11-109: Japan Domestic Airlines
- YS-11-110: Japan Civil Aviation Bureau
- YS-11-111: All Nippon Airways
- YS-11-113: Japan Maritime Self Defense Force
- YS-11-114: TOA Airways
- YS-11-115: Aeronautic College
- YS-11-116: Filipinas Orient Airways
- YS-11-117: Hawaiian Airlines
- YS-11-118: Japan Civil Aviation Bureau
- YS-11-120: LANSA
- YS-11-121: Filipinas Orient Airways
- YS-11-124: Japan Domestic Airlines
- YS-11-125: Cruzeiro do Sul
- YS-11-128: Austral (later Austral Líneas Aéreas)
- YS-11-129: TOA Airways
- YS-11A-201: NAMC
- YS-11A-202: Cruzeiro do Sul
- YS-11A-205: Piedmont Airlines
- YS-11A-206: Japan Maritime Self Defense Force
- YS-11A-207: Japan Maritime Safety Agency
- YS-11A-208: All Nippon Airways
- YS-11A-209: Southwest Air Lines
- YS-11A-211: VASP
- YS-11A-212: VASP
- YS-11A-213: All Nippon Airways
- YS-11A-214: Southwest Air Lines
- YS-11A-217: Japan Domestic Airlines
- YS-11A-218: Japan Air Self Defense Force
- YS-11A-219: China Airlines
- YS-11A-220: Olympic Airways
- YS-11A-222: TOA Airways
- YS-11A-223: All Nippon Airways
- YS-11A-227: Japan Domestic Airlines / TOA Airways
- YS-11A-301: Korean Air Lines
- YS-11A-305: Japan Air Self Defense Force
- YS-11A-306: Transair
- YS-11A-307: Japan Domestic Airlines
- YS-11A-309: Aerotransportes Litoral Argentino (later Austral Líneas Aéreas)
- YS-11A-310: Korean Air Lines
- YS-11A-313: TOA Airways
- YS-11A-314: Air Afrique
- YS-11A-321: Air Gabon
- YS-11A-402: Japan Air Self Defense Force
- YS-11A-404: Japan Maritime Self Defense Force
- YS-11A-500: Piedmont Airlines
- YS-11A-523: Philippine Civil Aeronautics Administration
- YS-11A-621: Trans Gabon
- YS-11A-623: Pelita Air Service
- YS-11A-624: Japan Maritime Self Defense Force
- YS-11A-626: Reeve Aleutian Airways
Operators
As of July 2011, Transair Cargo, Air Link International Airways, Aero JBR, Aerodan and ALCON Servicios Aereos each operate one YS-11 for a total of five aircraft in commercial service.[14]
Civil Operators
Former and present operators of the NAMC YS-11 include
- Aboitiz Air
- Aerodan Cargo (Mexico)
- Aerolitoral (subsidiary of AeroMéxico)
- Aero Majestic Airways
- Aerolíneas Argentinas
- AeroSierra
- Air Aruba
- Air Caribbean
- Air Nippon (subsidiary of All Nippon Airways)
- All Nippon Airways
- Air Philippines
- Air Phoenix
- Air Star Zanzibar (Tanzania - defunct)
- Airborne Express (USA)
- Airlink International Airways
- Aerotransportes Litoral Argentino (ALA) - merged with Compañía Austral de Transportes Aéreos SACI in 1971 to form Austral Líneas Aéreas
- Alcon
- American Eagle (operated by Simmons Airlines)
- Asian Spirit
- Austral Líneas Aéreas (subsidiary of Aerolíneas Argentinas)
- Barker-Wayne
- BIMP - EAGA Air Alliance
- Bouraq (Indonesia)
- China Airlines
- Continental Express (operated by Provincetown-Boston Airline, Inc.)
- Cruzeiro do Sul
- Far West (USA)
- Fil-Asian Airways
- Fort Worth Airlines
- Gabon ExpressGabon Express Cargo
- Gabon (Gabonese Air Force)
- Gacela Air Cargo
- Gambia Airways
- Geological Survey of Japan
- Global Air Cargo
- Hawaiian Airlines
- Hellenic Air Force
- Interisland Airlines
- Japan Air Lines
- Japan Air System (now merged into Japan Airlines)
- Japan Domestic Airlines (predecessor of Japan Air System)
- Japan Self-Defense Forces (Air and Maritime)
- Japan Civil Aeronautics Board
- Japan TransOcean Air
- Korean Air
- Korean Air Cargo
- Lansa
- Litoral
- Mandala
- Mey-Air
- Merpati Nusantara Airlines
- Mid Pacific Air
- MPAC
- Nihon Kinkyori Airlines (Subsidiary of ANA - All Nippon Airways)
- Norcanair
- Olympic Airways
- Pacific Southwest Airlines - Used to train Japanese pilots. Never painted in PSA livery.
- Provincetown-Boston Airlines
- Philippine Air Force
- Philippine Airlines
- Phuket Air
- Piedmont Airlines
- Pinehurst (USA)
- Pyramid Airlines (Egypt)
- Reeve Aleutian Airways
- Societe Generale d'Alimentation
- Simmons Airlines
- South Phoenix Airways
- Southwest Air Lines Japan (subsidiary of Japan Airlines)
- Tauk Tours
- Toa Airways (predecessor of Toa Domestic Airlines)
- Toa Domestic Airlines (predecessor of Japan Air System)
- Transair Ltd (Canada)
- Trans-Central Airlines (USA)
- Trygon, Ltd.
- United States Postal Service
- VASP
- Winair
Military Operators
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- Greek Air Force - 6 ex-Olympic Airways YS-11A aircraft were supplied in 1981.[15]
JSDF delivery breakdown:
JASDF
2 YS-11EA for Electronic Warfare
4 YS-11EB for ELINT
3 YS-11FC for Flight Checker
1 YS-11NT for Navigation Trainer
3 YS-11P for Passenger/VIP Transport
JMSDF
2 YS-11M for Freighter
2 YS-11M-A for Freighter
6 YS-11T-A for MPA trainer
[16]
Incidents
There have been over twenty hull loss accidents involving YS-11 aircraft.
- 13 November 1966, All Nippon Airways Flight 533 crashed into the sea near Matsuyama, Japan with the loss of all five crew and 45 passengers.[17]
- 20 October 1969, All Nippon Airways Flight 104 overran the runway at Miyazaki Airport, Japan. All four crew and 49 passengers survived.[18]
- 11 December 1969, a Korean Air flight from Gangneung to Seoul was hijacked and flown to Sǒndǒk Airfield near Wonsan.[19] The aircraft was damaged on landing and written off.[20] The aircraft, its crew, and seven passengers are still held in North Korean territory.[21]
- 12 August 1970, China Airlines Flight 206 crashed into Yuan Mountain on approach to Taipei, Taiwan. Two crew and 12 passengers were killed.[22]
- 1 April 1971, a Merpati Nusantara Airlines YS-11 made a wheels-up landing at Kemayoran Airport, Jakarta Indonesia while on a training flight.[23]
- 3 July 1971, Toa Domestic Airlines Flight 63 flew into Yokotsu Mountain while on approach to Hakodate Airport, Japan. All four crew and 64 passengers were killed, the worst loss of life in an accident involving the YS-11.[24]
- 7 November 1971, A VASP YS-11 was destroyed by fire after a candle was lit inside when the aircraft was being guarded overnight after being bogged down at Aragarças Airport in Aragarças, Brazil. Both guards were killed.[25]
- 12 April 1972, a VASP flight between São Paulo and Rio de Janeiro crashed 50 kilometres (31 mi) north of Rio de Janeiro. All four crew and 21 passengers were killed.[26][27]
- 18 October 1972, a Cruzeiro do Sul YS-11 overshot the runway at Congonhas Airport, São Paulo and was damaged beyond repair.[28]
- 21 October 1972, an Olympic Airlines YS-11 en route from Corfu (Kerkyra) to Athens crashed into the sea in Voula, whilst attempting an approach to Ellinikon International Airport, Athens, in a heavy storm. One crew member (the co-pilot) and 36 passengers were killed, while the captain, the two stewardesses and 16 passengers survived.[29]
- 23 October 1973, a VASP YS-11 overran the runway at Santos Dumont Airport, Rio de Janeiro after a rejected take-off and ended up in Guanabara Bay. Eight passengers were killed.[30][31]
- 5 March 1974, a Pacific Southwest Airlines YS-11 crash landed in the desert 14 kilometres (8.7 mi) east of Borrego Springs, California while on a training flight. Aircraft was written off.[32]
- 6 November 1974, a Reeve Aleutian Airways YS-11 was written off in a hangar fire at Anchorage, Alaska.[33]
- 28 May 1975, TOA Domestic Airlines Flight 621 was damaged beyond repair in a landing accident at Osaka International Airport when a tyre burst and the aircraft departed the runway.[34]
- 23 November 1976, Olympic Airways Flight 830 an Olympic Airlines YS-11 flew into mountain Metaxas near the village of Servia in Kozani, Greece, in low clouds and almost zero visibility. All four crew and 46 passengers were killed.[35]
- 29 April 1977, a Cruzeiro YS-11 departed the runway on landing at Ministro Victor Konder International Airport, Navegantes, Brazil.[36]
- 17 July 1977, a Philippine Airlines YS-11 ditched on approach to Mactan-Cebu International Airport after an engine failure.[37]
- 11 March 1983, Nihon Kinkyori Airlines Flight 497 undershot the runway at Nakashibetsu Airport, Japan.[38]
- 13 January 1987, a Mid Pacific Air YS-11 force landed in a field at Remington, Indiana after both engines were mismanaged.[39]
- 10 January 1988, TOA Domestic Airlines Flight 670 overran the runway at Miho-Yonago Airport, Yonago, Japan after a rejected take-off and ended up in the sea. Aircraft had not been de-iced prior to take-off.[40]
- 15 March 1989, a Mid Pacific Air YS-11 undershot the runway at Purdue University Airport, Lafayette, Indiana due to loss of pitch control caused by icing on the tail. The aircraft was on a positioning flight, both crew members were killed.[41]
- 6 March 1992, an Airborne Express YS-11 made a wheels-up landing at Airborne Airpark, Wilmington, Ohio while on a training flight due to pilot error.[42]
- 24 June 1996, an Air Philippines YS-11 struck a ground power unit while taxiing at Naga Airport, Naga City. Aircraft was destroyed in the subsequent fire.[43]
- 16 February 2000, Air Nippon Flight 354 departed the runway at Okadama Airport, Sapporo, Japan and collided with a bank of snow.[44]
- 3 November 2001, a YS-11 being prepared for delivery to an airline in Burundi was destroyed by a fire caused by a stray firework at London Southend Airport.[45]
- 11 September 2005, Phuket Airlines Flight 326 skids off the runway at Mae Sot Airport, Thailand.[46]
- 2 January 2008, Asian Spirit Flight 321 suffered an undercarriage collapse on landing at Masbate Airport, Philippines.[47]
- 28 September 2009, Japanese Maritime Self Defense Force YS-11M-A serial number 9044 overran the runway upon landing at Ozuki Air Field and was substantially damaged.[48]
Aircraft on display
- Brazil
- 2080 – YS-11A-200 on static display as a restaurant in Tijucas, Santa Catarina.[49]
- Japan
- 2001 – YS-11 on static display at the Museum of Aeronautical Science in Narita, Chiba. This airframe is the first prototype.[50][51]
- 2101 – YS-11A-200 on static display at the Tokorozawa Aviation Memorial Park in Tokorozawa, Saitama.[52][53]
- Philippines
- 2179 – YS-11A-500 on static display at Philippine Air Force Aerospace Museum in Manila, National Capital.[54]
- United States
- 2035 – YS-11-120 on static display at the Grissom Air Museum near Peru, Indiana.[55][56]
Specifications (YS-11A-200)
Data from [57]
General characteristics
- Crew: Two
- Capacity: 64 passengers
- Payload: 5,400 kg (11,904 lb)
- Length: 26.3 m (86 ft 3 in)
- Wingspan: 32.0 m (105 ft 0 in)
- Height: 8.99 m (29 ft 6 in)
- Wing area: 94.83 m² (1,020.4 ft²)
- Empty weight: 14,600 kg (32,187 lb)
- Max. takeoff weight: 23,500 kg (51,808 lb)
- Powerplant: 2 × Rolls-Royce Dart Mk.542-10K turboprop engines, 2,250 kW (3,030 shp) each
Performance
- Cruise speed: 454 km/h (245 knots, 282 mph)
- Range: 2,200 km (1,188 NM, 1,367 mi)
- Service ceiling: 6,982 m (22,900 ft)
- Rate of climb: 6.2 m/s (1,220 ft/min)
See also
- Aircraft of comparable role, configuration and era
- Convair 580
- Convair 600/640
- Avro 748
- An-24 / An-26
- BAe ATP
- Vickers Viscount
- Handley Page Dart Herald
- Fokker F27 Friendship
- Related lists
References
- ↑ Endres 1996, p. 22.
- ↑ Taylor 1966, p. 107.
- ↑ JIRO HORIKOSHI, 78, DIES IN TOKYO; DESIGNER OF ZERO FIGHTER AIRCRAFT January 12, 1982 New York Times Retrieved September 8, 2016
- ↑ Mercado, Stephen C. Japan Policy Research InstituteThe YS-11 Project and Japan's Aerospace Potential JPRI Occasional Paper No. 5 (September 1995) Retrieved September 8, 2016
- 1 2 3 Endres 1996, p. 23.
- ↑ Odagiri, Hiroyuki (1996). Technology and Industrial Development in Japan. Oxford: Clarendon Press. p. 225. ISBN 0-19-828802-6.
- 1 2 3 4 5 Endres 1996, p. 24.
- ↑ Anselmo, Joe. "Milestone for the MRJ" Aviation Week & Space Technology, 24 October 2014. Accessed: 25 October 2014.
- ↑ Endres 1996, pp. 26–27.
- ↑ Farewell to the wings of YS-11 Yomiuri Online (Yomiuri Shimbun)
- ↑ Hoyle, Craig (24 October 2014), "Big in Japan: Tokyo's Top 10 aircraft projects", Flightglobal, Reed Business Information
- ↑ Endres 1996, pp. 24, 26.
- ↑ Endres 1996, p. 26.
- ↑ Flight International 2011 World Airliner Census, p.22; retrieved 31 August 2011
- ↑ Historical Aircraft - NAMC YS-11A Retrieved September 30, 2016
- ↑ Kawasaki XP-1 As YS-11 Replacement Airliners.net, military aviation and space forum
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "KAL기피랍사건", Doosan Encyclopedia, 2010, retrieved 2010-07-07
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ Kim Tae Hong, "141 Days of Hell, What about 40 Years?" NK Daily (7 August 2009)
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ Germano da Silva, Carlos Ari César (2008). "O Samurai desaparecido". O rastro da bruxa: história da aviação comercial brasileira no século XX através dos seus acidentes 1928–1996 (in Portuguese) (2 ed.). Porto Alegre: EDIPUCRS. pp. 274–278. ISBN 978-85-7430-760-2.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ Germano da Silva, Carlos Ari César (2008). "Dia do aviador". O rastro da bruxa: história da aviação comercial brasileira no século XX através dos seus acidentes 1928–1996 (in Portuguese) (2 ed.). Porto Alegre: EDIPUCRS. pp. 291–293. ISBN 978-85-7430-760-2.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "Accident description". Aviation Safety Network. Retrieved 20 February 2009.
- ↑ "RECENT ACCIDENTS / INCIDENTS WORLDWIDE September 2009". Jacdec. Retrieved 12 November 2009.
- ↑ "Airframe Dossier - Nihon Aeroplane Manufacturing Company (NAMC) YS-11A-200, c/n 2080, c/r PP-CTI". Aerial Visuals. AerialVisuals.ca. Retrieved 8 November 2016.
- ↑ "Outdoor Exhibition Hall". Museum of Aeronautical Sciences (in Japanese). MUSEUM OF AERONAUTICAL SCIENCES. Retrieved 8 November 2016.
- ↑ "Airframe Dossier - Nihon Aeroplane Manufacturing Company (NAMC) YS-11, c/n 1001/2001, c/r JA8611". Aerial Visuals. AerialVisuals.ca. Retrieved 8 November 2016.
- ↑ "Experience Exhibits". Tokorozawa Aviation Museum. Tokorozawa Aviation Museum. Retrieved 8 November 2016.
- ↑ "Airframe Dossier - Nihon Aeroplane Manufacturing Company (NAMC) YS-11A-200, c/n 2101, c/r JA8732". Aerial Visuals. AerialVisuals.ca. Retrieved 8 November 2016.
- ↑ "Airframe Dossier - Nihon Aeroplane Manufacturing Company (NAMC) YS-11A-500, c/n 2179, c/r RP-77". Aerial Visuals. AerialVisuals.ca. Retrieved 8 November 2016.
- ↑ "NAMC YS-11A". Grissom Air Museum. Retrieved 8 November 2016.
- ↑ "Airframe Dossier - Nihon Aeroplane Manufacturing Company (NAMC)YS-11, c/r P4-KFD". Aerial Visuals. AerialVisuals.ca. Retrieved 8 November 2016.
- ↑ Green, William, The Observers Book of Aircraft, Frederick Warne & Co. Ltd, 1970. ISBN 0-7232-0087-4
- Endres, Günter. "NAMC YS-11: The Japanese Commuter". Air International. No. July 1996. pp. 22–27. ISSN 0306-5634.
- Taylor, John W. R. (1966). Jane's All The World's Aircraft 1966–67. London: Sampson Low, Marston & Company.
External links
 |
Wikimedia Commons has media related to YS-11. |
- YS-11 photographs by Tony Hara
- Shimizu, Kaho (27 November 2007). "Japan zeroes in on homegrown jetliner". The Japan Times.