{"as_of":"2026-10-28","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Model families","items":[{"count":9,"name":"Pietenpol AIR CAMPER","note":"","unit":"registered","url":"https://eflight.com/models/pietenpol/air-camper"}],"relation":"makes"},{"group":"Engines","items":[{"count":4,"name":"Continental A65 / C65 series","note":"65 hp","unit":"of these aircraft","url":"https://eflight.com/engines/continental-a65-c65-series"},{"count":2,"name":"Ford (converted) CONVERSION","note":"60 hp","unit":"of these aircraft","url":"https://eflight.com/engines/ford-converted-conversion"},{"count":1,"name":"Continental C85 series","note":"85 hp","unit":"of these aircraft","url":"https://eflight.com/engines/continental-c85-series"}],"relation":"powered by"},{"group":"Where they are","items":[{"count":4,"name":"Wisconsin","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WI"},{"count":1,"name":"Oregon","note":"","unit":"of these aircraft","url":"https://eflight.com/states/OR"},{"count":1,"name":"Nebraska","note":"","unit":"of these aircraft","url":"https://eflight.com/states/NE"},{"count":1,"name":"Missouri","note":"","unit":"of these aircraft","url":"https://eflight.com/states/MO"},{"count":1,"name":"Minnesota","note":"","unit":"of these aircraft","url":"https://eflight.com/states/MN"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Owls Head Transportation Museum","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/owls-head-transportation-museum"},{"count":1,"name":"Alfred & Lois Kelch Aviation Museum INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/alfred-lois-kelch-aviation-museum-inc"}],"relation":"owned by"},{"group":"Record","items":[{"count":16,"name":"NTSB accidents and incidents involving Pietenpol aircraft","note":"as the NTSB spells the maker's name","unit":"cases since 1982","url":"https://eflight.com/analytics/accidents-by-model"}],"relation":"involved in"},{"group":"Analytics","items":[{"count":null,"name":"Biggest makers and model families","note":"","unit":"","url":"https://eflight.com/analytics/makers"},{"count":null,"name":"Accidents by model and by maker","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-model"}],"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":{"id":"pietenpol","name":"Pietenpol","registered":12,"type":"maker","url":"https://eflight.com/makers/pietenpol"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}