# NTSB investigations, AZ: Loss of engine power (partial) NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 1 of 2 · 68 cases ## Latest cases - [NTSB WPR26LA190](https://openairdocs.org/ntsb/WPR26LA190.md): Piper PA-28-140 · Chandler, AZ · Accident · No injuries · Class 3 · Limited · Preliminary report · May 15, 2026 · N8714N · Substantial damage > On May 14, 2026, at 2043 mountain standard time, a Piper PA-28, N8714N, was substantially damaged when it was involved in an accident near Chandler, Arizona. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal… - [NTSB WPR26LA197](https://openairdocs.org/ntsb/WPR26LA197.md): Mooney M20J · Lake Havasu City, AZ · Accident · Serious injuries · Class 3 · Limited · Preliminary report · May 14, 2026 · N4665H · Substantial damage > On May 14, 2026, at 1523, a Mooney M20J, N4665H, was substantially damaged when it was involved in an accident near Lake Havasu City, Arizona. The pilot and two passengers sustained serious injuries. The airplane was operated under Title 14 Code of Federal… - [NTSB WPR26FA119](https://openairdocs.org/ntsb/WPR26FA119.md): Piper PA-28-140 · Phoenix, AZ · Accident · Serious injuries · Class 3 · Field · Preliminary report · Mar 4, 2026 · N7744T · Substantial damage > On March 4, 2026, about 0721 mountain standard time, a Piper PA-28-140, N7744T, was substantially damaged when it was involved in an accident near Phoenix, Arizona. The flight instructor was seriously injured, and the student pilot and one person on the… - [NTSB ANC26LA016](https://openairdocs.org/ntsb/ANC26LA016.md): Cessna 177B · Rocky Junction, AZ · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Feb 22, 2026 · N12984 · Substantial damage > On February 21, 2026, 1746 Mountain standard time, a Cessna 177B airplane, N12984, was substantially damaged when it was involved in an accident near Rocky Junction, Arizona. The pilot and passenger sustain minor injuries. The airplane was operated as a Title… - [NTSB WPR26LA056](https://openairdocs.org/ntsb/WPR26LA056.md): Rotorway Exec · Lake Havasu City, AZ · Accident · No injuries · Class 4 · Limited · Final report · Dec 8, 2025 · C-GBZD · Substantial damage > The pilot’s improper securing hardware installation, which resulted in a loss of throttle control and a loss of engine power. - [NTSB WPR26LA045](https://openairdocs.org/ntsb/WPR26LA045.md): Piper PA-28-181 · Mesa, AZ · Accident · No injuries · Class 3 · Limited · Preliminary report · Nov 17, 2025 · N4402N · Substantial damage > On November 17, 2025, about 0830 mountain standard time, a Piper PA 28-181, N4402N, was substantially damaged when it was involved in an accident near Mesa, Arizona. The flight instructor and student pilot were not injured. The airplane was operated as a… - [NTSB WPR26LA022](https://openairdocs.org/ntsb/WPR26LA022.md): Flight Design Ctsw · Casa Grande, AZ · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Oct 17, 2025 · N531CT · Substantial damage > On October 17, 2025, about 13:20 mountain standard time, a Flight Design GMBH CTSW, N531CT, was substantially damaged when it was involved in an accident near Casa Grande, Arizona. The pilot received minor injuries. The airplane was operated as a Title 14… - [NTSB WPR25LA084](https://openairdocs.org/ntsb/WPR25LA084.md): Cessna P210N · Prescott, AZ · Accident · No injuries · Class 3 · Limited · Preliminary report · Jan 18, 2025 · N4626K · Substantial damage > On January 18, 2025, about 1210 Mountain standard time, a Cessna P210N, N4626K, sustained substantial damage when it was involved in an accident near Prescott, Arizona. The flight instructor and student pilot were not injured. The airplane was operated as a… - [NTSB WPR24LA159](https://openairdocs.org/ntsb/WPR24LA159.md): Nanchang China CJ-6A · Peoria, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 21, 2024 · N4182C · Substantial damage > The partial loss of engine power during cruise flight due to the improper installation of the master connecting rod main bushing set screws, which backed off and allowed the main bushing to shift, resulting in scoring damage on the crankshaft that led to the… - [NTSB WPR24FA054](https://openairdocs.org/ntsb/WPR24FA054.md): Beech A36 · Topock, AZ · Accident · 1 fatal · Class 3 · Field · Final report · Dec 10, 2023 · N4171S · Substantial damage > The failure of the No. 4 connecting rod due to oil starvation, which resulted in a loss of engine power, inflight fire, and a subsequent off-airport emergency landing on rough desert terrain. Contributing to the accident was the pilot’s decision to attempt a… - [NTSB WPR23LA306](https://openairdocs.org/ntsb/WPR23LA306.md): Boeing CH-46E · Springerville, AZ · Accident · No injuries · Class 3 · Limited · Final report · Aug 5, 2023 · N461WY · Destroyed > The flight crew’s misidentification of a No. 2 torque sensing system signal conditioner malfunction when both engines were performing normally, which resulted in their attempt to execute a single-engine steep approach and landing without sufficient engine… - [NTSB WPR23LA031](https://openairdocs.org/ntsb/WPR23LA031.md): Cessna 150G · Star Valley, AZ · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 11, 2022 · N3131J · Substantial damage > The failure of the No. 1 cylinder exhaust or intake valve which resulted in the partial loss of engine power and subsequent impact with terrain. - [NTSB WPR22FA188](https://openairdocs.org/ntsb/WPR22FA188.md): Cessna 172F · Show Low, AZ · Accident · 2 fatal · Class 3 · Field · Final report · May 26, 2022 · N5532R · Substantial damage > The pilot’s improper leaning of the engine during an extended period of time, which caused an exhaust valve to become stuck and led to the partial loss of engine power during the accident flight. Contributing to the accident was the pilot’s decision to… - [NTSB WPR22LA152](https://openairdocs.org/ntsb/WPR22LA152.md): Adams Balloons A55S · Safford, AZ · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 10, 2022 · N866RA · Substantial damage > The pilot’s decision to continue the balloon’s fast approach to an unsuitable confined landing site, which resulted in a collision with powerline wires. - [NTSB WPR22LA130](https://openairdocs.org/ntsb/WPR22LA130.md): Paradise Aircraft USA P1 · Glendale, AZ · Accident · No injuries · Class 4 · Limited · Final report · Mar 19, 2022 · N101YY · Substantial damage > A total loss of engine power due to fuel exhaustion. Contributing to the accident was the pilot's inadequate preflight fuel inspection. - [NTSB WPR22LA035](https://openairdocs.org/ntsb/WPR22LA035.md): Sonex Waiex B · Laveen Village, AZ · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 15, 2021 · N535D · Substantial damage > Failure of the rocker swivel assembly due to either wear or corrosion, which resulted in a loss of engine power. - [NTSB WPR21FA340](https://openairdocs.org/ntsb/WPR21FA340.md): Cessna 177RG · Lake Havasu City, AZ · Accident · 1 fatal · Class 3 · Field · Final report · Sep 12, 2021 · N2085Q · Substantial damage > A partial loss of engine power during the airplane's initial climb due to wear of internal engine components, which prevented the engine from developing full-rated power and resulted in a loss of altitude. - [NTSB WPR21LA301](https://openairdocs.org/ntsb/WPR21LA301.md): Piper PA-28-140 · Amado, AZ · Accident · No injuries · Class 3 · Limited · Final report · Aug 2, 2021 · N44245 · Substantial damage > The inflight separation of a section of a propeller blade due to a fatigue crack, which resulted in a forced landing. - [NTSB WPR21FA175](https://openairdocs.org/ntsb/WPR21FA175.md): Swearingen SA226-T(B) · Winslow, AZ · Accident · 2 fatal · Class 3 · Field · Final report · Apr 23, 2021 · N59EZ · Destroyed > The loss of engine power to the right engine for reasons that could not be determined. Contributing to the accident was the pilot’s failure to maintain control of the airplane. - [NTSB WPR21LA020](https://openairdocs.org/ntsb/WPR21LA020.md): Piper PA-28-180 · Show Low, AZ · Accident · No injuries · Class 3 · Limited · Final report · Oct 21, 2020 · N7405W · Substantial damage > A partial loss of engine power due to the failure of the No. 4 cylinder exhaust valve. - [NTSB WPR19LA167](https://openairdocs.org/ntsb/WPR19LA167.md): Mooney M20V · Phoenix, AZ · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 11, 2019 · N576CM · Substantial damage > The partial loss of engine power during cruise flight for reasons that could not be determined with the available evidence. - [NTSB WPR19LA140](https://openairdocs.org/ntsb/WPR19LA140.md): Cessna 172 · Red Rock, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 6, 2019 · N8887U · Substantial damage > A partial loss of engine power for reasons that could not be determined based on the available information. - [NTSB WPR19LA128](https://openairdocs.org/ntsb/WPR19LA128.md): Beech 35 · Sedona, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 1, 2019 · N6864Q · Substantial damage > The partial loss of engine power due to deteriorated O-rings in the throttle metering assembly. Contributing to the accident was non-compliance with the manufacturer's recommended throttle metering assembly overhaul schedule. - [NTSB WPR18LA250](https://openairdocs.org/ntsb/WPR18LA250.md): Stoddard Hamilton Glasair Super IIS · Yuma, AZ · Accident · No injuries · Limited investigation · Final report · Aug 27, 2018 · N8162H · Substantial damage > A total loss of engine power as a result of the detachment of the throttle linkage from the throttle arm of the fuel injector servo due to an insufficiently tightened and secured bolt and the subsequent inadequate maintenance inspection. - [NTSB WPR18LA140](https://openairdocs.org/ntsb/WPR18LA140.md): Bell OH 58C · Yuma, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 12, 2018 · N82857 · Substantial damage > A partial loss of engine power during an aerial application flight due to thermal damage to the 1st stage gas producer turbine nozzle and an irregular fuel spray pattern due to carbon buildup of the fuel nozzle. Contributing to the accident was maintenance… - [NTSB ANC18LA034](https://openairdocs.org/ntsb/ANC18LA034.md): Grumman TBM-3 · Fort Apache, AZ · Accident · Serious injuries · Class 3 · Limited · Final report · May 6, 2018 · N337VT · Destroyed > A partial loss of engine power for reasons that could not be determined based on the available information. - [NTSB WPR18FA119](https://openairdocs.org/ntsb/WPR18FA119.md): Piper PA 24-260 · Scottsdale, AZ · Accident · 6 fatal · Field investigation · Final report · Apr 10, 2018 · N9456P · Destroyed > The flight instructor's failure to maintain airplane control during the initial climb as a result of the airplane being loaded above its maximum gross weight and beyond its aft center of gravity limits. Contributing to the accident was a degraded engine power… - [NTSB GAA18CA059](https://openairdocs.org/ntsb/GAA18CA059.md): Mooney M20 · Tucson, AZ · Accident · No injuries · Data collection · Final report · Nov 26, 2017 · N6002Q · Substantial damage > The pilot’s inadequate preflight and in-flight fuel management, which resulted in an intermittent loss of engine power due to fuel starvation. - [NTSB WPR18LA006](https://openairdocs.org/ntsb/WPR18LA006.md): Nanchang China CJ 6 · Buckeye, AZ · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 9, 2017 · N8NW · Substantial damage > The failure of the fuel pump’s diaphragm which resulted in fuel system contamination from air and or oil and caused the engine to lose power. - [NTSB WPR17LA175](https://openairdocs.org/ntsb/WPR17LA175.md): Grumman AA1 · Phoenix, AZ · Accident · Serious injuries · Limited investigation · Final report · Aug 1, 2017 · N6216L · Substantial damage > The partial loss of engine power during initial climb due to the No. 3 cylinder exhaust valve becoming stuck open due to deposit buildup in the exhaust valve stem and guide and the pilot’s exceedance of the airplane’s critical angle of attack while attempting… - [NTSB WPR17LA148](https://openairdocs.org/ntsb/WPR17LA148.md): Charles J Norris Arion Lightning · New River, AZ · Accident · No injuries · Limited investigation · Final report · Jul 10, 2017 · N273DB · Substantial damage > A partial loss of engine power for reasons that could not be determined due to a lack of available evidence. - [NTSB WPR17LA093](https://openairdocs.org/ntsb/WPR17LA093.md): Schweizer 269C · Coolidge, AZ · Accident · Minor injuries · Limited investigation · Final report · Apr 27, 2017 · N521AR · Substantial damage > A partial loss of engine power due to separation of the throttle cable. - [NTSB WPR17LA050](https://openairdocs.org/ntsb/WPR17LA050.md): Diamond Aircraft Ind DA 40 NG · Kingman, AZ · Accident · No injuries · Class 3 · Limited · Final report · Dec 29, 2016 · N605SJ · Substantial damage > The loss of engine oil pressure during cruise flight, which resulted in partial loss of engine power and necessitated a forced landing. The loss of oil pressure was the result of a failed engine piston, likely initiated by foreign object damage, which… - [NTSB WPR17LA004](https://openairdocs.org/ntsb/WPR17LA004.md): Rockwell International 112A · Phoenix, AZ · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 12, 2016 · N509CA · Substantial damage > A catastrophic engine failure due to lack of lubrication due to the absence of 2 piston cooling nozzles that backed out of their respective threaded bores, which resulted in a forced landing on unsuitable terrain. - [NTSB WPR16LA106](https://openairdocs.org/ntsb/WPR16LA106.md): Boeing B75N1 · Winslow, AZ · Accident · No injuries · Limited investigation · Final report · May 12, 2016 · N56200 · Substantial damage > The partial loss of engine power during takeoff initial climb in high-density altitude conditions for reasons that could not be determined because a postaccident examination of the airplane and engine revealed no anomalies. - [NTSB WPR16FA102](https://openairdocs.org/ntsb/WPR16FA102.md): Beech G35 · Surprise, AZ · Accident · 1 fatal · Field investigation · Final report · May 7, 2016 · N4401D · Substantial damage > The mechanic's failure to properly secure the bolt connecting the throttle cable to the carburetor during the installation of the carburetor, which resulted in a loss of engine power. - [NTSB WPR16LA088](https://openairdocs.org/ntsb/WPR16LA088.md): Thomas D. Parkes Lancair ES · Prescott, AZ · Accident · No injuries · Limited investigation · Final report · Mar 10, 2016 · N44AZ · Substantial damage > A partial loss of engine power due to an over-temperature event, which thermally damaged the blade tips of the turbocharger wheel and resulted in a slowing or stoppage in the rotation of the turbocharger. - [NTSB WPR16LA079](https://openairdocs.org/ntsb/WPR16LA079.md): Piper PA 22-150 · Fountain Hills, AZ · Accident · No injuries · Limited investigation · Final report · Mar 2, 2016 · N4356A · Substantial damage > A partial loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation. - [NTSB WPR16LA033](https://openairdocs.org/ntsb/WPR16LA033.md): Piper PA 28-140 · Wickenburg, AZ · Accident · No injuries · Class 3 · Limited · Final report · Nov 25, 2015 · N7PM · Substantial damage > A partial loss of engine power due to a separation of the mixture control cable clamp, which was either not installed or secured correctly during maintenance. - [NTSB WPR15LA254](https://openairdocs.org/ntsb/WPR15LA254.md): Raudenbush Ernie Lancair Super ES · Winkelman, AZ · Accident · Minor injuries · Limited investigation · Final report · Sep 1, 2015 · N74ES · Destroyed > A partial loss of engine power for reasons that could not be determined because postaccident examination of the engine revealed no anomalies. - [NTSB WPR15LA139](https://openairdocs.org/ntsb/WPR15LA139.md): Beech H35 · Tucson, AZ · Accident · No injuries · Limited investigation · Final report · Mar 30, 2015 · N112F · Substantial damage > A partial loss of engine power during initial takeoff climb for reasons that could not be determined because postaccident examination revealed no evidence of a mechanical anomaly that would have precluded normal operation. - [NTSB WPR15LA131](https://openairdocs.org/ntsb/WPR15LA131.md): Mccurry Charles P F 1 Rocket · Sedona, AZ · Accident · Serious injuries · Limited investigation · Final report · Mar 21, 2015 · N747MC · Substantial damage > The partial loss of engine power during final approach for reasons that could not be determined during postaccident examination of the engine. - [NTSB WPR15LA015](https://openairdocs.org/ntsb/WPR15LA015.md): Piper PA28 151 · Bullhead City, AZ · Accident · Minor injuries · Limited investigation · Final report · Oct 18, 2014 · N56873 · Substantial damage > A partial loss of engine power during the initial climb for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation. - [NTSB WPR14LA374](https://openairdocs.org/ntsb/WPR14LA374.md): Bell 206 · Tombstone, AZ · Accident · No injuries · Limited investigation · Final report · Sep 12, 2014 · N64AW · Substantial damage > A partial loss of engine power during cruise flight due to loose “B” nut fittings and a bent tube as a result of maintenance personnel’s inadequate inspection of the nuts during the most recent inspection. - [NTSB WPR14LA242](https://openairdocs.org/ntsb/WPR14LA242.md): Adams Dragonfly · Mesa, AZ · Accident · No injuries · Limited investigation · Final report · Jun 12, 2014 · N85TL · Substantial damage > A partial loss of engine power due to a reduction in the No. 3 cylinder’s compression as a result of the exhaust valve not having consistent uniform contact with the cylinder head valve seat. - [NTSB WPR14LA199](https://openairdocs.org/ntsb/WPR14LA199.md): Beech H35 · Parker, AZ · Accident · No injuries · Limited investigation · Final report · May 22, 2014 · N4689D · Substantial damage > The improperly attached fuel line and cracked fuel diaphragm due to unknown personnel’s inadequate maintenance, which resulted in the loss of engine power during cruise flight and the subsequent forced landing onto rough terrain. - [NTSB WPR14FA186](https://openairdocs.org/ntsb/WPR14FA186.md): Cessna T207A · Page, AZ · Accident · 1 fatal · Field investigation · Final report · May 10, 2014 · N7311U · Substantial damage > The pilot’s inability to maintain aircraft control due to a partial loss of engine power and an encounter with downdrafts and gusting crosswinds while on final approach to the runway. The reason for the partial loss of engine power could not be determined… - [NTSB WPR14LA046](https://openairdocs.org/ntsb/WPR14LA046.md): Rovey Jason H RV-8 · Wickenburg, AZ · Accident · No injuries · Limited investigation · Final report · Nov 2, 2013 · N391V · Substantial damage > The fatigue failure of a propeller pitch change pin due to excessive shot peening of the pin’s surface during the manufacturing process. - [NTSB WPR14LA027](https://openairdocs.org/ntsb/WPR14LA027.md): Piper PA-23-150 · Tucson, AZ · Accident · Serious injuries · Limited investigation · Final report · Oct 23, 2013 · N3162P · Substantial damage > The pilot’s failure to maintain airplane control during takeoff following the loss of left engine power due to the failure of the left engine-driven fuel pump’s diaphragm. Contributing to the accident was the pilot’s failure to use the electric fuel boost… - [NTSB WPR13LA390](https://openairdocs.org/ntsb/WPR13LA390.md): Bell Helicopter Textron 206L-1 · Payson, AZ · Accident · Serious injuries · Limited investigation · Final report · Aug 28, 2013 · N2018R · Substantial damage > A partial loss of engine power due to an overtemperature event that thermally damaged the turbine blades and vanes, which resulted in a hard landing. Next page: https://openairdocs.org/ntsb-events/342/sequence.md?state=AZ&page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."eventStateOrRegion" = 'AZ' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '342' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-events/342/sequence?state=AZ --- 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.