ERA20LA082

NTSB accident investigation · Mooney M20J · Farmingdale, NY · December 28, 2019

Accident · Minor injuriesClass 3 · LimitedFinal report
Date
December 28, 2019, 16:15 local (21:15 UTC)
Place
Farmingdale, NY
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N52840Mooney M20J
Defining event
Approach-VFR pattern final: Fuel exhaustion
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Eastern Region Aviation
Parties
FAA - FSDO
FAA report
20191228018959A
Case key
100840

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 pilot’s improper preflight inspection, which resulted in fuel exhaustion and a total loss of engine power.

Findings · 2

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.

Planning/preparation: fuel planningPersonnel issues › Task performance · PilotMooney M20J: 2 casesAll aircraft: 719 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelMooney M20J: 9 casesAll aircraft: 1,695 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 conducted a preflight inspection of the airplane prior to the first flight of the day but did not visually check the fuel quantity in the fuel tanks. He reported the engine data monitor indicated there was 20 gallons of fuel on board the airplane prior to takeoff. He flew to another airport and on the return flight, while on final approach, the air traffic controller requested the pilot make S-turns because the airport was busy. While on short final, the engine lost total power. The pilot switched fuel tanks and was unsuccessful in his attempts to restart the engine before impacting terrain about 1/2 mile from the runway. Examination of the wreckage revealed that the right fuel tank remained intact; however, no fuel was present in the fuel tank. The left fuel tank was breached during the accident sequence, and no fuel was present in the tank. Multiple fuel lines were disconnected from the engine and residual fuel was present in the fuel manifold supply and the return lines from the fuel control to the fuel pump. All other lines were absent of fuel, including the fuel supply line from the airframe to the fuel pump. Furthermore, the pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. It’s likely that the pilot’s improper preflight inspection and overreliance of the engine fuel monitor resulted in fuel exhaustion during final approach to landing.

Factual narrative

On December 28, 2019, about 1615 eastern standard time, a Mooney M20J, N52840, was substantially damaged when it was involved in an accident near Farmingdale, New York. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. According to the pilot, he conducted a preflight inspection of the airplane about 1300, with no anomalies noted, and departed Republic Airport (FRG), Farmingdale, New York, for a flight to Francis S Gabreski Airport (FOK), Westhampton Beach, New York. He landed at FOK and remained on the ground until about 1545, when he departed for the return flight to FRG. He stated that the digital engine monitor indicated 20 gallons of fuel on board prior to takeoff from FRG. He stated that during approach to FRG the airport traffic pattern was congested and about a 3-mile final approach to the runway, the controller requested he make S-turns for separation from the airplane in front of him. At an altitude of about 600 ft, the engine lost total power. The pilot responded by first switching the fuel selector from the right tank to the left tank, then tried to restart the engine before impacting terrain about ½-mile from runway 1 at FRG. The airplane impacted trees and a pole before coming to rest upright in a wooded area. The left wing remained attached to the fuselage, was substantially damaged, and bent up. The right wing remained attached to the fuselage. The right fuel tank was not breached, and when visually inspected, and no fuel was noted in the tank. The left tank was breached, and no fuel was present. A Federal Aviation Administration (FAA) inspector examined the airplane after the accident. During the examination the inspector disconnected multiple fuel lines to check for the presence of fuel. A small amount of residual fuel was present in the fuel manifold supply and the return lines from the fuel control to the fuel pump. All other lines were absent of fuel, including the fuel supply line from the airframe to the fuel pump. The FAA inspector interviewed the pilot after the accident, the interview revealed the pilot did not visually check the fuel quantity in either tank during his preflight inspection. Additionally, the pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. According to the Pilot Operating Handbook, the preflight inspection checklist included steps to “check quantity” of the left and right fuel tanks.

Aircraft

Registration
N52840
Reported as
Mooney M20J
Category
Airplane
Serial number
24-1683
Built
1988
Airframe hours
1,974
Engine
Continental IO-550 SERIES, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 23, 2019
Departed
FOK · Westhampton Beach, NY
Destination
FRG · Farmingdale, NY
Airport
FRG · Republic, runway 01, 5,516 × 150 ft, asphalt
Equipment
Data recorder, Auto-pilot, ADS-B, Stall warning system, Onboard weather, Electronic primary flight display, Electronic multifunction display

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
51
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
July 21, 2019
Seat
Left
Restraint
3-point
Flight hours
2,090 total · 697 in this make and model · 2,073 as pilot in command · 24 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
48 °F, dew point 34 °F
Altimeter
30.20 inHg
Observed at
FRG, 1 nm away

Docket · 7

The files NTSB released with the investigation on March 22, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.3 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.