BFO93LA126

NTSB accident investigation · Cessna 172D · New Milford, PA · July 17, 1993

Accident · Serious injuriesLimited investigationFinal report
Date
July 17, 1993, 19:50 local (23:50 UTC)
Place
New Milford, PA
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N2494UCessna 172D
Weather
Visual (VMC) · Day
Status
Completed · report December 3, 1993
Report
Approved by Office Director
FAA report
19930717024289A
Case key
11955

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

Loss of engine engine power due to water contamination of the fuel. Factors related to the accident were the mice, which partially blocked fuel and air flow to the carburetor, and the lack of suitable terrain in the emergency landing area.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(total) - nonmechanicalCruise
Fluid,fuel - waterCause
Fuel system,carburetor - blocked(partial)Factor
Forced landingDescent - emergency
In flight collision with objectLanding
Terrain condition - none suitableFactor
Object - tree(s)
In flight collision with terrain/waterLanding

Analysis

During cruise, the engine lost partial power. The pilot stated he applied carburetor heat, and shortly thereafter, the engine lost all power. During an emergency landing on mountainous wooded terrain, the airplane 'clipped' trees and impacted the ground, then it slid about 30 ft and came to rest inverted. An exam of the airplane revealed no airframe anomalies. The engine was inspected and water was found in the gascolator, carburetor float bowl and accelerator pump housing; source of the water contamination was not determined. Mice were found in the carburetor air box and venturi area. One mouse was lodged in the throttle valve. Receipts showed the airplane received about 17 gallons of fuel on the day before the accident. Since then, the airplane had flown about 1 hr. The pilot said that before each flight, he drained each fuel drain. He said water was found in the fuel samples, but he continued to drain the fuel until no more water was detected.

Aircraft

Registration
N2494U
Reported as
Cessna 172D
Category
Airplane
Serial number
50094
Airframe hours
2,394
Engine
Continental O-300-D, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Wayne R. Adams
Registered owner
Wayne R. Adams
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 1, 1993 · 9 hours before
Departed
PS50 · Kingsley, PA

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
56
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
212 total · 206 in this make and model · 69 as pilot in command · 1 in the last 90 days · 1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 9 knots
Visibility
45 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 46 °F
Altimeter
30.00 inHg
Observed at
BGM, 90 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N2494U · 1

Matched to the same aircraft by N-number and date.