- Date
- February 21, 2019, 17:00 local (22:00 UTC)
- Place
- Morristown, NJ
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N83AFCessna 172
- Defining event
- Takeoff: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 26, 2019
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20190221011079A
- Case key
- 99025
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
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.
Findings · 4
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
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.
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.
Aircraft
- Registration
- N83AF
- Reported as
- Cessna 172 (R)
- Category
- Airplane
- Serial number
- 17281052
- Built
- 2001
- Airframe hours
- 15,896.9
- Engine
- Lycoming IO-360-L2A, 160 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- American Flyers, doing business as 07960
- Registered owner
- Ameriflyers Of Texas Inc
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · February 13, 2019
- Departed
- MMU · Morristown, NJ
- Destination
- MMU · Morristown, NJ
- Airport
- MMU · Morristown Muni, runway 31, 3,997 × 150 ft, asphalt
- Equipment
- Stall warning system, ADS-B
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Flight instructor
- Age
- 29
- Injuries
- None
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, With waivers/limitations
- Seat
- Right
- Flight hours
- 368 total · 310 in this make and model · 234 as pilot in command · 86 in the last 90 days · 25 in the last 30 days · 3 in the last 24 hours
- Role
- Student pilot
- Age
- 18
- Injuries
- None
- Certificate
- Student
- Seat
- Left
- Flight hours
- 6 total · 6 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 290° at 7 knots
- Visibility
- 10 statute miles
- Temperature
- 50 °F, dew point 34 °F
- Altimeter
- 29.96 inHg
- Observed at
- KMMU
Docket · 4
The files NTSB released with the investigation on March 27, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.