# Equipment design - Type: NTSB finding subsection - Path: [Organizational issues](https://openairdocs.org/ntsb-findings/04) › [Development](https://openairdocs.org/ntsb-findings/0401) › [Design](https://openairdocs.org/ntsb-findings/040110) › Equipment design - NTSB code: 04011010 - Cases: 35 - In the probable cause: 32 - Fatal cases: 13 - All cases: https://openairdocs.org/ntsb-findings/04011010/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/04011010/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/04011010 ## Cases per year (in the probable cause / all) - 2008: 4 / 4 - 2009: 4 / 5 - 2010: 1 / 1 - 2011: 4 / 5 - 2012: 3 / 3 - 2013: 3 / 3 - 2014: 2 / 2 - 2015: 2 / 2 - 2016: 3 / 3 - 2017: 1 / 1 - 2019: 1 / 1 - 2021: 1 / 1 - 2022: 1 / 1 - 2023: 1 / 1 - 2024: 1 / 2 ## Defining events in these cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 6 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 4 cases - [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 4 cases - [Aircraft structural failure](https://openairdocs.org/ntsb-events/337): 3 cases - [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 3 cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 2 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 2 cases - [Runway excursion](https://openairdocs.org/ntsb-events/300): 2 cases - [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 2 cases - [Birdstrike](https://openairdocs.org/ntsb-events/901): 1 cases ## Aircraft models (registry) - [Sikorsky S-76C](https://openairdocs.org/model/sikorsky-s-76c): 1 cases - [Sikorsky S-97A](https://openairdocs.org/model/sikorsky-s-97a): 1 cases - [Saab-Scania 2000](https://openairdocs.org/model/saab-scania-2000): 1 cases - [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta): 1 cases - [Piper PA 46-350P](https://openairdocs.org/model/piper-pa-46-350p): 1 cases - [Lindstrand Balloons 150A](https://openairdocs.org/model/lindstrand-balloons-150a): 1 cases - [Learjet 60](https://openairdocs.org/model/learjet-60): 1 cases - [Cub Crafters CC18-180](https://openairdocs.org/model/cub-crafters-cc18-180): 1 cases - [Cessna 560XL](https://openairdocs.org/model/cessna-560xl): 1 cases - [Cessna 421A](https://openairdocs.org/model/cessna-421a): 1 cases ## Other findings in the same cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 7 cases - [Equipment manufacture](https://openairdocs.org/ntsb-findings/04013010) (Organizational issues): 3 cases - [Equip certification/testing](https://openairdocs.org/ntsb-findings/04012015) (Organizational issues): 3 cases - [Use of policy/procedure](https://openairdocs.org/ntsb-findings/02063032) (Personnel issues): 3 cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 3 cases - [Oversight of operation](https://openairdocs.org/ntsb-findings/04032015) (Organizational issues): 2 cases - [Design of document/info](https://openairdocs.org/ntsb-findings/04011020) (Organizational issues): 2 cases - [Conducive to carburetor icing](https://openairdocs.org/ntsb-findings/03031030) (Environmental issues): 2 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 2 cases - [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 2 cases ## Newest cases - [NTSB ANC25LA008](https://openairdocs.org/ntsb/ANC25LA008), Nov 2, 2024: Cub Crafters CC18-180 (N55PK), Anchorage, AK, substantial damage. Probable cause: The incorrect installation of the rear flight control stick, resulting in the pilot’s inability to control the pitch attitude, coupled with the pilot’s inadequate control system check before… - [NTSB CEN24LA318](https://openairdocs.org/ntsb/CEN24LA318), Jun 20, 2024: Ayres S2R (N4004K), Stanwood, MI, substantial damage. Probable cause: The pilot’s failure to maintain terrain clearance during a low-level aerial application flight, which resulted in impact with terrain and a subsequent forced landing. Contributing to the accident was… - [NTSB WPR24FA053](https://openairdocs.org/ntsb/WPR24FA053), Dec 8, 2023: Beauchamp Norm Kitfox (N66180), Eloy, AZ, destroyed, 1 fatal. Probable cause: The separation of a propeller blade during the initial climb due to insufficient blade retention forces. Contributing to the accident was the propeller blade retention design, manufacturing defects… - [NTSB ERA23FA007](https://openairdocs.org/ntsb/ERA23FA007), Oct 6, 2022: Seamax M-22 (N46PD), East Hampton, NY, substantial damage, 1 fatal. Probable cause: An inflight separation of the right wing as a result of the manufacturer’s application of a bolt and nut in the upper wing strut attachment point that was inconsistent with the nut design intent and… - [NTSB DCA21FA085](https://openairdocs.org/ntsb/DCA21FA085), Feb 20, 2021: Boeing 777-222 (N772UA), Broomfield, CO, incident, minor damage. Probable cause: The fatigue failure of the right engine fan blade. Contributing to the fan blade failure was the inadequate inspection of the blades, which failed to identify low-level indications of cracking, and… - [NTSB DCA20MA002](https://openairdocs.org/ntsb/DCA20MA002), Oct 18, 2019: Saab 2000 (N686PA), Unalaska, AK, substantial damage, 1 fatal. Probable cause: The landing gear manufacturer’s incorrect wiring of the wheel speed transducer harnesses on the left main landing gear during overhaul. The incorrect wiring caused the antiskid system not to function… - [NTSB ERA17LA263](https://openairdocs.org/ntsb/ERA17LA263), Aug 2, 2017: Sikorsky S-97A (N971SK), Jupiter, FL, substantial damage. Probable cause: A design change in the helicopter's fly-by-wire control system that resulted in an increase in the sensitivity of the cyclic stick while transitioning from ground to flight mode, magnifying the… - [NTSB ERA16LA274](https://openairdocs.org/ntsb/ERA16LA274), Jul 24, 2016: Alisport Silent 2 Targa (N602SL), London, KY, substantial damage. Probable cause: The pilot's failure to properly secure the right side of the canopy before takeoff, and an in-flight collision with trees while maneuvering with an open canopy. Contributing to the pilot's failure to… - [NTSB DCA16FA199](https://openairdocs.org/ntsb/DCA16FA199), Jul 6, 2016: Bell 525 (N525TA), Italy, TX, destroyed, 2 fatal. Probable cause: A severe vibration of the helicopter that led to the crew's inability to maintain sufficient rotor rotation speed (Nr), leading to excessive main rotor blade flapping, subsequent main rotor blade… - [NTSB ERA16FA194](https://openairdocs.org/ntsb/ERA16FA194), May 24, 2016: Jihlavan Airplanes Sro KP 5 ASA (N440JM), Rhoadesville, VA, destroyed, 2 fatal. Probable cause: The pilots' loss of control that necessitated the activation of the parachute system and the airplane manufacturer's inadequate design of the front parachute anchor attachment structure, which… NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted. Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1). NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.