Prinair

Prinair is a Puerto Rican airline brand whose history is closely associated with inter-island and regional air transportation in the Caribbean. The company began service in 1966 as Aerolíneas de Ponce, or Ponce Airlines, operating Aero Commander aircraft between Mercedita Airport in Ponce and San Juan's Isla Verde International Airport, now Luis Muñoz Marín International Airport. In 1967, the airline adopted the name Prinair, derived from Puerto Rico International Airlines. During its principal period of development, Prinair built a broad regional network linking Puerto Rico with nearby Caribbean islands and destinations. Its domestic routes included Ponce, San Juan, Mayagüez, Aguadilla, Vieques, Culebra and other Puerto Rican communities. International and regional services reached locations including the United States and British Virgin Islands, the Dominican Republic, Martinique, Barbados, Antigua, Saint Kitts, Guadeloupe and Sint Maarten. The airline also operated cargo services to Opa-locka, Florida, placing it in both the passenger and regional freight markets. Prinair became particularly associated with the de Havilland Heron. It modified Heron aircraft by replacing their original engines with more powerful Continental IO-520 engines, creating a locally adapted version suited to the airline's operating requirements. At its peak, Prinair operated more than 20 Herons, reportedly making it the largest Heron operator in the world. The carrier later added CASA C-212 Aviocar aircraft and, in the early 1980s, Convair 580 turboprops. The larger Convairs improved capacity and helped support services, especially on routes to the Virgin Islands, but they did not reverse the company's broader difficulties. The airline's decline reflected a combination of competitive pressure, operational and safety concerns, and changing public confidence. Competition on Virgin Islands routes increased from carriers such as Aero Virgin Islands and Oceanair. Prinair had also experienced three fatal accidents and two non-fatal hijacking incidents during its history. It ceased operations in 1985, before it could take delivery of the CASA CN-235 aircraft for which it had been intended as a launch customer. The CN-235 prototype was displayed in a Prinair color scheme, but the planned acquisition did not occur. Prinair later returned to service in a different operating phase. It resumed flights in 2007 using Piper Chieftain aircraft, but stopped flying again in 2010. In 2019, the company's Prinairtours operation announced plans to relaunch the brand as a charter airline, initially connecting Aguadilla in northwestern Puerto Rico with Punta Cana in the Dominican Republic. Scheduled service was reported to have restarted on March 19, 2019. The available reference material does not establish the airline's current operating status, ownership structure, or an active official website. Prinair remains historically significant as a Puerto Rican regional carrier and as one of the major operators of the de Havilland Heron.

Prinair's origins date to 1966, when Aerolíneas de Ponce began operating from Mercedita Airport in Ponce. Its first route connected Ponce with San Juan, providing a link between Puerto Rico's southern regional center and the island's principal metropolitan airport. The company initially used Aero Commander aircraft, appropriate for short-haul regional service. The following year it changed its name to Prinair, an abbreviation of Puerto Rico International Airlines. The renamed airline expanded beyond its initial domestic route and became an important regional carrier during the 1960s and 1970s. Its network combined Puerto Rican destinations with international services throughout the Caribbean. Within Puerto Rico, routes included San Juan, Ponce, Mayagüez, Aguadilla, Vieques and Culebra. International routes included Santo Domingo, the U.S. and British Virgin Islands, and several eastern Caribbean islands. Prinair also developed cargo activity, including freighter service to Opa-locka in South Florida. The de Havilland Heron became the defining aircraft of the airline's mature operating period. Prinair adapted the type by replacing the original 250-horsepower Gipsy Queen engines with 300-horsepower Continental IO-520 engines. The company eventually operated more than 20 Herons, giving it what reference material identifies as the largest Heron fleet in the world. The fleet later included seven CASA C-212 Aviocars and four Convair CV-580s. The Convairs, introduced in the early 1980s, were larger turboprops intended to provide additional capacity and capability, especially on Virgin Islands routes. Prinair's growth was accompanied by serious operational setbacks. Three fatal accidents occurred during its history, in 1969, 1972 and 1979. The 1969 crash of Flight 277 followed an air-traffic-control error that placed the aircraft near the wrong waypoint before it struck the Sierra de Luquillo mountains, killing all 19 occupants. Flight 191 crashed at Ponce in 1972 after a go-around, killing five people. Flight 610 crashed after departing Saint Croix in 1979; the investigation found that the aircraft was overloaded and that its center of gravity was beyond the permitted rear limit. The airline also experienced two non-fatal hijacking incidents. Legal and regulatory issues formed part of the company's public history. In 1978, Puerto Rican politician Nicolas Nogueras sought a writ of certiorari against Prinair in the United States Supreme Court, but the petition was denied. The available material does not provide sufficient detail to characterize the underlying dispute. By the early 1980s, Prinair faced growing competition on important Virgin Islands routes from Aero Virgin Islands and Oceanair. The company's accident history also contributed to diminished public confidence. Prinair ceased operations in 1985. It had been expected to become a launch customer for the CASA CN-235, and the prototype was displayed in Prinair colors on one side at its September 1983 rollout, but the planned aircraft acquisition never took place. A later incarnation restarted operations in 2007 with Piper Chieftain aircraft. That phase ended in 2010. Prinairtours subsequently announced a 2019 charter relaunch, with planned service between Aguadilla and Punta Cana. Flights were reported to have restarted on March 19, 2019. The supplied reference does not establish whether Prinair remains active today, nor does it identify a current owner, executive team or official website. Prinair's legacy is therefore that of a historically important Puerto Rican commuter and regional airline rather than a continuously operating major carrier. Its broad Caribbean network, extensive Heron fleet, aircraft modifications and repeated attempts to resume service distinguish it within Puerto Rico's aviation history.

• 2019

  Charter relaunch announced

  [1]Prinairen.wikipedia.org

  Prinairtours announces a charter relaunch linking Aguadilla with Punta Cana, with flights reported to restart on March 19.

• 2010

  Flights stop again

  [1]Prinairen.wikipedia.org

  The post-2007 operating phase ends.

• 2007

  Operations resume with Piper Chieftains

  [1]Prinairen.wikipedia.org

  A later version of the airline returns to service using Piper Chieftain aircraft.

• 1985

  Scheduled operations cease

  [1]Prinairen.wikipedia.org

  Prinair stops operating after competitive pressure and declining public confidence.

• 1980

  Convair 580s enter the fleet

  [1]Prinairen.wikipedia.org

  The airline introduces larger Convair 580 turboprops for regional operations.

• 1970

  Caribbean network expansion

  [1]Prinairen.wikipedia.org

  Prinair expands passenger service across Puerto Rico and the Caribbean and adds cargo operations to Opa-locka, Florida.

• 1967

  The Prinair name is adopted

  [1]Prinairen.wikipedia.org

  Aerolíneas de Ponce changes its name to Prinair, meaning Puerto Rico International Airlines.

• 1966

  Service begins as Aerolíneas de Ponce

  [1]Prinairen.wikipedia.org

  The airline starts operations between Ponce and San Juan with Aero Commander aircraft.

A Puerto Rican regional and Caribbean island airline focused on short-haul passenger, charter and cargo connectivity.

• Airline service · 1966

  Regional scheduled passenger service

  Prinair's principal historical offering was short-haul passenger transportation within Puerto Rico and across the Caribbean. Its network linked San Juan and Ponce with communities such as Mayagüez, Aguadilla, Vieques and Culebra, while also reaching the Virgin Islands, the Dominican Republic and eastern Caribbean destinations. The service relied on small and medium turboprop aircraft suited to island and regional operations.

• Air cargo

  Cargo and freighter service

  During its expansion in the 1970s, Prinair operated cargo freighter services to Opa-locka, Florida. These flights supplemented its passenger network and positioned the airline as a regional logistics operator as well as an inter-island passenger carrier.

• Charter airline service · 2019

  Prinairtours charter service

  Prinairtours announced a renewed charter operation in 2019. The proposed initial route connected Aguadilla in northwestern Puerto Rico with Punta Cana in the Dominican Republic. The supplied reference confirms the relaunch announcement and reported restart date but does not document the later continuity or scale of the service.

• Aircraft fleet

  De Havilland Heron fleet

  The de Havilland Heron was Prinair's signature aircraft type. The airline modified its Herons by installing 300-horsepower Continental IO-520 engines in place of the original Gipsy Queen engines. Prinair operated 28 Herons and became known for having the world's largest Heron fleet.

• 2019

  Relaunch as a charter airlineStrategy

  Background

  After earlier operating periods ended in 1985 and 2010, Prinairtours sought to revive the brand in a narrower charter role.

  Action taken

  The company announced flights between Aguadilla and Punta Cana, with service reported to restart on March 19, 2019.

  Aftermath

  The available reference does not establish whether the relaunch became a sustained operation or identify the airline's current status.

  Source

• 1983

  Plan to become a CASA CN-235 launch customerProduct launch

  Background

  Prinair considered acquiring the newly developed CASA CN-235 for future regional operations.

  Action taken

  The CN-235 prototype was displayed in Prinair colors on one side at its September 1983 rollout.

  Aftermath

  Prinair's subsequent failure prevented delivery, so the planned fleet transition did not occur.

  Source

• 1980

  Introduce Convair 580 turbopropsGeneration change

  Background

  The airline needed larger aircraft for some regional routes, particularly those involving the Virgin Islands.

  Action taken

  Prinair added Convair 580 turboprops to its existing Heron and CASA aircraft fleet.

  Aftermath

  The aircraft increased regional capacity but did not prevent the airline from ceasing operations in 1985.

  Source

• 1970

  Expand into Caribbean passenger and cargo marketsStrategy

  Background

  Prinair sought to build scale beyond its initial Puerto Rican domestic route.

  Action taken

  The airline added Caribbean passenger destinations and freighter service to Opa-locka, Florida.

  Aftermath

  Prinair became a significant regional operator, with a network spanning Puerto Rico, the Virgin Islands, the Dominican Republic and other Caribbean locations.

  Source

• 1967

  Rename the airline PrinairStrategy

  Background

  The company began service as Aerolíneas de Ponce and sought a name reflecting a broader Puerto Rican and international operating identity.

  Action taken

  It adopted the Prinair name, derived from Puerto Rico International Airlines.

  Aftermath

  The new name accompanied the airline's subsequent expansion from a Ponce–San Juan route into a wider Caribbean network.

  Source

1. 1Prinairen.wikipedia.org