{"as_of":"2026-10-09","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Flies","items":[{"count":3,"name":"Cessna 172 Skyhawk","note":"","unit":"on the certificate","url":"https://eflight.com/models/cessna/172"},{"count":1,"name":"Robinson R22","note":"","unit":"on the certificate","url":"https://eflight.com/models/robinson/r22"},{"count":3,"name":"Cessna","note":"","unit":"on the certificate","url":"https://eflight.com/makers/cessna"},{"count":1,"name":"Robinson Helicopter","note":"","unit":"on the certificate","url":"https://eflight.com/makers/robinson-helicopter"}],"relation":"flies"},{"group":"Where","items":[{"count":null,"name":"San Juan, PR","note":"where most of the aircraft on its certificate are registered","unit":"","url":""},{"count":null,"name":"Fernando Luis Ribas Dominicci Airport","note":"SIG","unit":"","url":"https://eflight.com/airports/SIG"},{"count":null,"name":"Luis Munoz Marin International","note":"SJU","unit":"","url":"https://eflight.com/airports/SJU"},{"count":490,"name":"Puerto Rico","note":"","unit":"aircraft registered","url":"https://eflight.com/states/PR"}],"relation":"based in"},{"group":"Certificates and records","items":[{"count":4,"name":"FAA charter and air-taxi certificate","note":"designator FHSA","unit":"aircraft listed","url":""}],"relation":"holds"},{"group":"Aircraft","items":[{"count":null,"name":"N1348L","note":"Cessna 172S","unit":"","url":"https://eflight.com/aircraft/N1348L"},{"count":null,"name":"N2107U","note":"Cessna 172S","unit":"","url":"https://eflight.com/aircraft/N2107U"},{"count":null,"name":"N5035M","note":"Cessna 172S","unit":"","url":"https://eflight.com/aircraft/N5035M"},{"count":null,"name":"N7049C","note":"Robinson Helicopter R22 BETA","unit":"","url":"https://eflight.com/aircraft/N7049C"}],"relation":"lists on its certificate"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"aircraft_listed":4,"base_city":"San Juan","base_state":"PR","callsign":null,"certificate":"135","code":null,"designator":"FHSA","dot_authority":null,"id":"isla-grande-flying-school-and-service-corporation","name":"Isla Grande Flying School and Service Corporation","type":"operator","url":"https://eflight.com/operators/isla-grande-flying-school-and-service-corporation"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}