GAA19CA151
2019-02-21 · Morristown, New Jersey, United States · None · 1 aircraft · Status: Completed
Airport MMU
Current FAA registration · N83AF
- Make / Model
- CESSNA 172R
- Year of manufacture
- 2001 · 18 years old at event
- Engine
- LYCOMING I0360 SER (180 hp)
- Seats / Engines
- 4 seats · 1 engine
- Last airworthiness date
- 20010517
- ADS-B equipped
- Yes — Mode-S AB5607
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The student pilot's improper rudder input and the flight instructor's delayed remedial action during takeoff, which resulted in a loss of directional control, a runway excursion, and the landing gear collapsing.
Factual narrative
The flight instructor reported that, during takeoff with the student pilot on the flight controls, the airplane veered slightly to the left, she assisted with rudder input and they corrected the veer, but then the airplane veered left abruptly. The instructor assumed control of the airplane, pulled the power, and applied brakes and rudder. But, the airplane exited the runway to the left into the grass, and the nose landing gear collapsed. The student reported that, upon reflection, he recalled the instructor telling him about the left turning tendencies and having to correct with the opposite (right) rudder. He reported that he may have corrected with the wrong rudder during the takeoff. The airplane sustained substantial damaged to the engine mount and fuselage. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation station located on the airport reported that, about 10 minutes before the accident, the wind was from 290° at 7 knots. The airplane was departing runway 31. The Federal Aviation Administration's Airplane Flying Handbook, FAA-H-8083-3B, provides information and guidance in a section titled "Normal Takeoff" which stated in part: As the airplane gains speed, the elevator control tends to assume a neutral position if the airplane is correctly trimmed. At the same time, the rudder pedals are used to keep the nose of the airplane pointed down the runway and parallel to the centerline. The effects of engine torque and P-factor at the initial speeds tend to pull the nose to the left (Torque and P-Factor will be discussed in greater detail in later chapter). The pilot must use whatever rudder pressure is needed to correct for these effects or winds. The flight instructor reported that, during takeoff with the student pilot on the flight controls, the airplane veered slightly left. The instructor assisted by applying rudder input, which corrected the veer, but then the airplane abruptly veered left. The instructor assumed control of the airplane, pulled the power, and applied brakes and rudder. The airplane exited the runway to the left into grass, and the nose landing gear collapsed. The student reported that he recalled the instructor telling him about the airplane's left turning tendencies and having to correct with the opposite (right) rudder. He added that he may have corrected with the wrong rudder during the takeoff. The airplane sustained substantial damage to the engine mount and fuselage. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The airport's automated weather observation station reported that, about 10 minutes before the accident, the wind was from 290° at 7 knots. The airplane was departing from runway 31. The Federal Aviation Administration's Airplane Flying Handbook, FAA-H-8083-3B, "Normal Takeoff," stated, in part: As the airplane gains speed, the elevator control tends to assume a neutral position if the airplane is correctly trimmed. At the same time, the rudder pedals are used to keep the nose of the airplane pointed down the runway and parallel to the centerline. The effects of engine torque and P-factor at the initial speeds tend to pull the nose to the left (Torque and P-Factor will be discussed in greater detail in later chapter). The pilot must use whatever rudder pressure is needed to correct for these effects or winds. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Personnel issues-Task performance-Use of equip/info-Use of equip/system-Instructor/check pilot - C
- C Personnel issues-Task performance-Use of equip/info-Use of equip/system-Student/instructed pilot - C
- C Personnel issues-Action/decision-Action-Delayed action-Instructor/check pilot - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
Verbatim from NTSB's published report. Source file
NTSB_2019_GAA19CA151.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
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Related research
Matched on aircraft type or causal vocabulary (runway excursion). All research papers
- NASA NTRS 2023 · Reprint (Version printed in journal) Finite Element Simulation of Three Full-Scale Crash Tests for Cessna 172 Aircraft
The NASA Emergency Locator Transmitter Survivability and Reliability project was initiated in 2013 to assess the crash performance standards for the next generation of emergency locator transmitter (E…
- NASA NTRS 2019 · Conference Paper Crash Testing and Simulation of a Cessna 172 Aircraft: Pitch Down Impact Onto Soft Soil
During the summer of 2015, NASA Langley Research Center conducted three full-scale crash tests of Cessna 172 (C-172) aircraft at the NASA Langley Landing and Impact Research (LandIR) Facility.
- NASA NTRS 2019 · Technical Memorandum (TM) Simulating the Impact Response of Three Full-Scale Crash Tests of Cessna 172 Aircraft
During the summer of 2015, a series of three full-scale crash tests were performed at the Landing and Impact Research Facility located at NASA Langley Research Center of Cessna 172 aircraft.
- SKYbrary (Eurocontrol) 2024 · SKYbrary article Runway Excursion — SKYbrary Knowledge Base
SKYbrary runway excursion review — RE-OE (overruns) + RE-LO (lateral). Risk drivers: long landing, high approach speed, contaminated surface, tailwind, mis-set autobrakes.
- NTSB Aircraft Accident Reports 2019 · Accident report Embraer ERJ 175 Runway Excursion at Charlotte Douglas
Republic Airline ERJ-175 runway excursion CLT, January 2018. Examines a low-energy runway excursion involving misuse of autobrakes + thrust reverser response after a high-crosswind landing on a contam…
- NASA NTRS 2025 · Presentation Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.