NTSB CAROL · Event
Event CEN21LA193
Registry · N2973R
FAA Aircraft Registry record.
Make / Model
PIPER PA-28R-200
Engine
LYCOMING I0360 SER (180 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19691124
ADS-B equipped
Yes — Mode-S A3124C
Registrant of record
QUINONES ROLAND
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A total loss of engine power for reasons that could not be determined based on the available information.
Factual narrative
On April 17, 2021, about 1950 central daylight time, a Piper PA-28R-200 airplane, N2973R, was substantially damaged when it was involved in an accident near McKinney, Texas. The flight instructor and student pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 instructional flight. While turning from base to final during the second traffic pattern iteration, the engine lost total power. The student transferred the flight controls to the instructor. After the confirming the total loss of engine power, the instructor reported he initiated the “memorized emergency checklist.” The instructor stated that the propeller was turning the whole time. He stated that he attempted to restore engine power, notified the tower controller of the emergency, and performed a forced landing to an open field. The student reported that he did not see the instructor reach down toward the fuel selector with his left hand, and the only item the flight instructor touched with his right hand was the throttle. The student reported that he performed the landing, as the instructor “passed out.” The student was able to egress from the airplane after it came to rest, and he found the instructor was laying over his seat. The instructor came to briefly and then passed out again. The student then contacted first responders. The airplane sustained substantial damage to both wings and the fuselage. A postaccident examination of the airframe and engine did not find any anomalies. The fuel selector valve remained intact. The fuel selector valve was located on the lower left cockpit sidewall. A flat metal disc labeled with the selector handle detent positions remained attached to the sidewall with a screw and the selector handle remained installed on the valve shaft. The selector handle was near one of the two OFF detent positions. The airplane was not equipped with the fuel selector valve cover or handle mentioned in Piper Aircraft Service Bulletin (SB) 840A, Fuel Selector Valve Cover Replacement. The SB describes its purpose, and states: To announce the availability of a new fuel selector valve cover assembly and mating handle, which reduces the possibility of pilot mismanagement of the fuel system through inadvertent selection to the “OFF” position, resulting in power interruption or stoppage. A review of the airplane’s maintenance records revealed that the most recent annual inspection was completed 11 days before the accident. There was no record of an annual inspection in the previous 9 years. The airplane’s tachometer hour meter had only accumulated 0.2 hours since the annual inspection 9 years prior. The student was turning from base to final in the airport traffic pattern when the engine lost total power. The student transferred control of the airplane to the instructor; the airplane sustained substantial damage during the subsequent forced landing to an open field. Postaccident examination of the airframe and engine revealed no anomalies. The fuel selector handle was found near one of the two OFF detent positions; however, the position of the fuel selector at the time of the loss of power could not be determined. Based on the available information, the reason for the loss of engine power could not be determined. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- — Aircraft-Aircraft power plant-Engine (reciprocating)-(general)-Failure
- — Aircraft-Aircraft power plant-Engine (reciprocating)-(general)-Unknown/Not determined
Verbatim from NTSB's published report. Source file
NTSB_2021_CEN21LA193.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
The Value of Strong Partnerships to Build a Successful Aviation Maintenance Career Pathway Program for Transitioning Military Service Members
The aerospace industry is competing with other industries for a qualified workforce, and many of those competing industries are investing heavily in creating workforce development pipelines.
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
Browse the full corpus — academia portal ↗