ERA22LA217

NTSB accident investigation · Cessna 172N · Toms River, NJ · May 1, 2022

Accident · No injuriesClass 4 · LimitedFinal report
Date
May 1, 2022, 18:20 local (22:20 UTC)
Place
Toms River, NJ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N737LYCessna 172N
Defining event
Approach-VFR go-around: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA
FAA report
20220501006439A
Case key
105039

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

Loss of engine power due to the throttle linkage becoming disconnected in flight due to improper maintenance.

Findings · 3

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.

Maintenance: installationPersonnel issues › Task performance · Maintenance personnelCessna 172N: 5 casesAll aircraft: 371 casesProbable cause
Oversight: oversight of maintenanceOrganizational issues › Support/oversight/monitoring · OperatorCessna 172N: 1 caseAll aircraft: 28 cases
Engine controlsAircraft › Aircraft power plant · Related maintenance infoCessna 172N: 2 casesAll aircraft: 51 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 an instructional flight, he told the student to set up for landing on runway 6. When they were at an altitude of about 400 ft above ground level, the flight instructor told him to apply full power since for a go-around. When the student applied full power, the engine did not respond. The flight instructor took control of the airplane and tried to land on runway 24. The flight instructor knew they would not make the runway, so he tried to land in the grass and the left wing contacted a fence and flipped the airplane over, which resulted in substantial damage to both wings, the vertical stabilizer and horizontal stabilizer. The flight instructor stated that he thought the throttle cable had become disconnected. A postaccident examination revealed that the throttle cable was not connected to the carburetor. An AN drilled bolt was found at the bottom of the cowling; however, the castellated nut was not located. Review of the maintenance logbooks revealed that the engine had been recently overhauled and installed in the airplane. Further conversations with the flight instructor, who was also the mechanic, stated that it is possible he forgot to install the cotter pin into the castellated nut and the bolt fell out.

Aircraft

Registration
N737LY
Reported as
Cessna 172N
Category
Airplane
Serial number
17269512
Built
1977
Airframe hours
6,300
Engine
Lycoming O-320, 160 hp, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Instructional · Part 91
Operator
Old Bridge Flight School
Registered owner
N8074e LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 13, 2022
Departed
3N6 · Englishtown, NJ
Destination
Same as departure
Airport
KMJX · Ocean county airport, runway 24, 5,950 × 100 ft, asphalt
Equipment
None

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
Pilot
Age
74
Injuries
None
Certificates
Flight engineer, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 22, 2022
Seat
Right
Restraint
3-point
Flight hours
23,000 total · 11,000 in this make and model · 14,700 as pilot in command · 70 in the last 90 days · 21 in the last 30 days · 8 in the last 24 hours
Role
Student pilot
Injuries
None
Seat
Left
Restraint
3-point
Flight hours
72 total · 72 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 9 knots
Visibility
10 statute miles
Temperature
64 °F, dew point 39 °F
Altimeter
30.06 inHg
Icing
Clear
Observed at
KNEL, 7 nm away
METAR
KNEL 012200Z AUTO 14009KT 10SM FEW095 SCT120 18/04 A3006 RMK AO2 SLP179 T01780044 $

Docket · 4

The files NTSB released with the investigation on June 14, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 16.6 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.