CEN21LA373

NTSB accident investigation · Mooney M20F · New Albany, MS · July 22, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
July 21, 2021, 21:10 local (Jul 22, 2021, 02:10 UTC)
Place
New Albany, MS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N6474QMooney M20F
Defining event
Enroute-cruise: Electrical system malf/failure
Weather
Visual (VMC) · Night/bright
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
Federal Aviation Administration (Jackson FSDO)
FAA report
20210721011309A
Case key
103720

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot’s delayed decision to abort the landing that resulted in a collision with a fence post. Contributing to the accident was the failure of the alternator drive belt during cruise flight for unknown reasons and the subsequent inoperative electrical system when the airplane’s battery became depleted.

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.

Action: delayed actionPersonnel issues › Action/decision · PilotMooney M20F: 3 casesAll aircraft: 894 casesProbable cause
Electrical power system: battery/chargerAircraft › Aircraft systems · Capability exceededMooney M20F: 1 caseAll aircraft: 37 casesProbable cause
Light condition: darkEnvironmental issues › Conditions/weather/phenomena · Effect on operationMooney M20F: 3 casesAll aircraft: 448 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 pilot reported that airplane’s electrical charging system malfunctioned during cruise flight in night visual meteorological conditions. He reduced the airplane’s electrical load by pulling the circuit breakers for everything besides the transponder. The pilot continued to the intended destination and manually extended the landing gear to conserve battery power; however, while in the traffic pattern, there was insufficient battery power remaining to turn-on the runway lights using the airplane’s radio. The pilot completed a low pass over the runway before deciding to go-around and reenter the traffic pattern and land. During the first landing, the airplane landed hard and bounced several times before the pilot increased engine power and aborted the landing. On the second landing, the airplane bounced 3 times before it settled onto the runway. The pilot applied brakes briefly before he increased engine power for another aborted landing because he saw the departure end of the runway approaching. The airplane’s left wing was substantially damaged when it impacted a fence post during the aborted landing. The pilot suggested that the accident could have been prevented had he used his available mobile phone to call the airport manager to turn on the runway lights, or if he had a hand-held radio to use after the battery became depleted. The alternator drive belt was not located after the accident and is believed to have separated from the airplane earlier in the flight.

Aircraft

Registration
N6474Q
Reported as
Mooney M20F (NO SERIES)
Category
Airplane
Serial number
680016
Built
1967
Airframe hours
4,183.47
Engine
Lycoming IO-360-A1A, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 25, 2020 · 83.07 hours before
Departed
LOZ · London, KY
Destination
Same as departure
Airport
M72 · New Albany / Union County Airport, runway 36, 3,903 × 75 ft, asphalt
Equipment
Stall warning system

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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
63
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
December 28, 2019
Seat
Left
Restraint
Lap only
Flight hours
471.4 total · 380 in this make and model · 331.5 as pilot in command

Weather

Conditions
Visual (VMC) · Night/bright
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 73 °F
Altimeter
30.05 inHg
Observed at
KTUP, 22 nm away
METAR
METAR KTUP 220153Z 00000KT 10SM FEW060 25/23 A3005 RMK AO2 SLP169 T02500233 $=

Docket · 3

The files NTSB released with the investigation on January 13, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.7 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.