{"as_of":"2026-10-12","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":10,"name":"Dehavilland DHC-6","note":"","unit":"with this engine series","url":"https://eflight.com/models/dehavilland/dhc-6"},{"count":6,"name":"Air Tractor Inc AT-400","note":"","unit":"with this engine series","url":"https://eflight.com/models/air-tractor-inc/at-400"},{"count":6,"name":"Pilatus PC-6","note":"","unit":"with this engine series","url":"https://eflight.com/models/pilatus/pc-6"},{"count":2,"name":"Dehavilland DHC-2","note":"","unit":"with this engine series","url":"https://eflight.com/models/dehavilland/dhc-2"},{"count":1,"name":"Air Tractor Inc AT-402","note":"","unit":"with this engine series","url":"https://eflight.com/models/air-tractor-inc/at-402"},{"count":1,"name":"Dehavilland BEAVER DHC-2 MK.3","note":"","unit":"with this engine series","url":"https://eflight.com/models/dehavilland/beaver-dhc-2-mk-3"},{"count":1,"name":"Piper PA-46 Malibu, Mirage, Matrix and M-Class","note":"","unit":"with this engine series","url":"https://eflight.com/models/piper/pa-46"}],"relation":"powers"},{"group":"Where they are","items":[{"count":7,"name":"Illinois","note":"","unit":"of these aircraft","url":"https://eflight.com/states/IL"},{"count":5,"name":"Montana","note":"","unit":"of these aircraft","url":"https://eflight.com/states/MT"},{"count":3,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":3,"name":"Alaska","note":"","unit":"of these aircraft","url":"https://eflight.com/states/AK"},{"count":2,"name":"Washington","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WA"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":6,"name":"Woodley Aerial Leasing LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/woodley-aerial-leasing-llc"},{"count":2,"name":"Wattum Investments LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/wattum-investments-llc"},{"count":2,"name":"Berry Aviation INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/berry-aviation-inc"},{"count":1,"name":"Wells Fargo Trust CO Na Trustee","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/wells-fargo-trust-co-na-trustee"}],"relation":"owned by"},{"group":"Airworthiness","items":[{"count":642,"name":"Failure reports on the Pratt & Whitney PT6A-27","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/pratt-whitney-pt6a-27#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"The fleet by engine type","note":"","unit":"","url":"https://eflight.com/analytics/fleet"},{"count":null,"name":"Every engine series","note":"","unit":"","url":"https://eflight.com/engines"}],"relation":"compared in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"aircraft":28,"horsepower":680,"id":"pratt-whitney-pt6a-27","maker":"Pratt & Whitney","name":"Pratt & Whitney PT6A-27","thrust_lb":null,"type":"Turboprop","url":"https://eflight.com/engines/pratt-whitney-pt6a-27"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}