ATL89FA106

NTSB accident investigation · Beech H35 · Knoxville, TN · March 16, 1989

Accident · FatalField investigationFinal report
Date
March 16, 1989, 16:00 local (21:00 UTC)
Place
Knoxville, TN
Injuries
2 fatal
Damage
Substantial damage
Phase of flight
Unknown
Aircraft
N5403DBeech H35
Weather
Visual (VMC) · Day
Status
Completed · report August 22, 1990
Report
Approved by Office Director
FAA report
19890316003949A
Case key
7881

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 continued operation of the airplane with a known mechanical defect in the engine carburetor/fuel supply system as evidenced by the past history of engine stoppage during ground operation. Contributing to the accident was the pilot's performance of unauthorized maintenance on the aircraft and its system.

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) - nonmechanicalUnknown
Fuel system,carburetor - contaminationCause
Maintenance - inadequatePilot in commandCause
Operation with known deficiencies in equipment - misjudgedPilot in commandCause
Maintenance,major repair - performedPilot in commandFactor
Lack of total experience in type of aircraftPilot in command
In flight collision with terrain/waterDescent - emergency
Terrain condition - water

Analysis

It was reported that the pilot/owner and the pax had spent the day installing an air-oil separator kit on the airplane. After the installation by the two uncertificated mechanics, they departed the local island airport sometime after 1500 EDT. At about 1605, the airplane was observed to land on the river short of the airport surface. Both occupants exited the airplane and swam toward shore. The pilot made it to shore but his pax was having problems so he swam back out to help. Both occupants sank in the 48 degree water and their bodies were recovered later. After recovery, the engine was dried out and a test run performed. Some contamination was found in the pressure carburetor. The engine had a history of stopping on the ground.

Aircraft

Registration
N5403D
Reported as
Beech H35
Category
Airplane
Serial number
D-4873
Airframe hours
3,602
Engine
Continental O-470-G(1), 240 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
W. T. Christian
Registered owner
Robert M Melia
Airworthiness certificate
Standard, Utility
Last inspection
Annual · September 2, 1988 · 66 hours before

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
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
815 total · 12 in this make and model · 735 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 10 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 30 °F
Altimeter
30.00 inHg
Observed at
TYS, 9 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.