Japan Transocean Air

Japan Transocean Air Co., Ltd. (日本トランスオーシャン航空株式会社, Nihon Toransuōshan Kōkū Kabushiki-gaisha), or JTA, is an airline based in Naha, Okinawa Prefecture, Japan.[3] It operates domestic services on behalf of Japan Airlines. Its main base is Naha Airport.[4] From 1967 until 1993, the airline was known as Southwest Air Lines.

Japan Transocean Air
IATA ICAO Callsign
Founded20 June 1967 (1967-06-20)
(as Southwest Air Lines)
HubsNaha Airport
Focus citiesNew Ishigaki Airport
AllianceOneworld (affiliate)
Fleet size13
Parent companyJapan Airlines (72.8%)
HeadquartersNaha, Okinawa Prefecture, Japan
Key peopleTakeshi Ichinosawa
(Chairman & President)
Employees739 (31 March 2017)[2]


A former Southwest Air Lines Boeing 737-200
A former JTA Boeing 737-400 in former Southwest Air Lines livery at Chūbu Centrair International Airport, Nagoya, Japan (2013)
A former JTA Boeing 737-400

The airline was established on 20 June 1967 as Southwest Air Lines (南西航空, Nansei Kōkū), and started operations in July 1967. It changed its name in July 1993. It has 718 employees (at March 2014) and is owned by Japan Airlines (51.1%), Naha Airport Terminal (17%), Okinawa Prefecture (12.9%) and others (19.1%)[4] It flew Convair 240s until new capital from JAL allowed it to upgrade to NAMC YS-11s, and eventually Boeing 737s. JTA occasionally lends aircraft to JAL in the event of equipment failure. JTA also provides maintenance services for JAL Group Boeing 737-400 aircraft. JTA owns 72.9% of Ryukyu Air Commuter. At one time the head office of Southwest Air Lines was at 306-1 Kagamizu in Naha.[5]


JTA serves the following destinations:[6]

Island City Airport Notes Refs
KyushuFukuokaFukuoka Airport
Ryukyu IslandsIshigakiNew Ishigaki AirportFocus city
KyushuKagoshimaKagoshima AirportTerminated
ShikokuKōchiKōchi AirportTerminated
HonshuKomatsuKomatsu Airport
Ryukyu IslandsKumejimaKumejima Airport
ShikokuMatsuyamaMatsuyama AirportTerminated
Ryukyu IslandsMiyakojimaMiyako Airport
Ryukyu IslandsMiyakojimaShimojishima AirportTerminated[7]
HonshuNagoyaChubu Centrair International Airport
Ryukyu IslandsNahaNaha AirportHub
HonshuOkayamaOkayama Airport
HonshuOsakaKansai International Airport
HonshuOsakaItami AirportTerminated
HonshuTokyoHaneda AirportTerminated
Ryukyu IslandsYonaguniYonaguni Airport


Current fleet

The Japan Transocean Air fleet consists of the following aircraft (as of February 2019):[8]

Japan Transocean Air fleet
Aircraft In fleet Orders Passengers Notes
Boeing 737-800 13[9] 20/145[10]
Total 13

Former fleet

Accidents and incidents

Since the airline's foundation, there has only been one accident which was under the former Southwest Air Lines brand.

  • On 26 August 1982, Southwest Air Lines Flight 611, a Boeing 737-2Q3, registration JA8444, overran the runway at Ishigaki Airport and was destroyed. None of the 138 passengers and crew were killed but some were injured during the emergency evacuation.[14]


  1. "JO 7340.2J Contractions - Basic with Change 1 & Change 2" (PDF). Federal Aviation Administration. 3 June 2019. pp. 3-1-50, 3-2-42, 3-3-44. Retrieved 8 February 2020.
  2. "日本トランスオーシャン航空 会社情報". Retrieved 21 July 2016.
  3. "Company Profile" (Japanese). Japan Transocean Air. Retrieved on May 19, 2009.
  4. "Directory: World Airlines". Flight International. 2007-04-03. p. 97.
  5. "World Airline Directory." Flight International. 10 April 1976. p. 958. "Head Office: 306-1 Kagamizu, Naha, Okinawa, Ryukyu Islands, Japan."
  6. "About JTA," Japan Transocean Air
  7. "Shimojijima Airport," Okinawa Prefecture
  8. "Global Airline Guide 2017 (Part One)". Airliner World (October 2017): 18.
  9. "Japan Transocean finalizes order for 12 737-800s". The Boeing Company.
  10. Source: company website http://www.churashima.net/jta/company/fleet.html Archived 2017-08-26 at the Wayback Machine
  11. "," Airliners.net
  12. "Boeing: Japan Airlines Group". Retrieved 21 July 2016.
  13. "," Airliners.net
  14. Ranter, Harro. "ASN Aircraft accident Boeing 737-2Q3 JA8444 Ishigaki Airport (ISG)". Retrieved 21 July 2016.
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