GAA19CA151

NTSB accident investigation · Cessna 172 · Morristown, NJ · February 21, 2019

Accident · No injuriesData collectionFinal report
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.

Use of equip/info: use of equip/systemPersonnel issues › Task performance · Instructor/check pilotCessna 172R: 6 casesAll aircraft: 1,391 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · Student/instructed pilotCessna 172R: 6 casesAll aircraft: 1,391 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotCessna 172R: 7 casesAll aircraft: 894 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172R: 37 casesAll aircraft: 3,958 casesProbable cause

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.