MIA07LA132

NTSB accident investigation · Roger A Dalke E.B. Jenny · Wakefield, VA · August 11, 2007

Accident · Minor injuriesLimited investigationFinal report
Date
August 11, 2007, 10:05 local (14:05 UTC)
Place
Wakefield, VA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N59486Roger A Dalke E.B. Jenny
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 2007
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20070811017769A
Case key
66501

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/owner's inadequate maintenance which resulted in a radiator leak, a loss of engine coolant, the engine overheating, and partial loss of engine power.

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(partial) - mech failure/malfCruise - normal
Maintenance - inadequatePilot in commandCause
Cooling system,radiator - leak
Engine assembly - overtemperature
Forced landingEmergency descent/landing
In flight collision with objectLanding - flare/touchdown
Terrain condition - crop

Analysis

The pilot stated that after takeoff, he climbed to an altitude of 1,000 feet, and as he scanned the airplane's gauges, he noticed that the engine outlet coolant temperature had climbed to the red line (220 degrees F). He said he then checked the engine inlet coolant temperature and he noticed that it was still in the green (180 degrees F), and then checked the oil temperature and noticed that it was normal. As he continued the flight he said that he watched the gauges more closely and a few minutes later the inlet coolant temperature began to climb to the red line, while the coolant outlet temperature dropped to zero. He said that at that point he knew he was in trouble, and in an attempt not to experience a total engine failure he made a precautionary landing to a cotton field. He said the cotton plants were high and during the landing the airplane flipped over on its back, and stopped in a distance of less than 200 feet. The pilot said that at no time did the engine cease operating. An FAA inspector conducted a postcrash examination of the airframe, the engine and accessories, and the examination revealed that the radiator had incurred no accident related damage, however, there was a leak at the soldered radiator drain fitting.

Factual narrative

On August 11, 2007, about 1005 eastern daylight time, a Roger A. Dalke, model E.B. Jenny experimental amateur built airplane, N59486, registered to, and operated by a private individual, as a Title 14 CFR Part 91 personal flight, crashed shortly after takeoff in Wakefield, Virginia. Visual meteorological conditions prevailed, and no flight plan was filed for the local flight. The airline transport-rated pilot received minor injuries, and the airplane incurred substantial damage. The flight originated in Wakefield, Virginia, the same day, about 1000.

The pilot stated that after takeoff, he climbed to an altitude of 1,000 feet, and as he scanned the airplane's gauges, he noticed that the engine outlet coolant temperature had climbed to the red line (220 degrees F). He said he then checked the engine inlet coolant temperature and he noticed that it was still in the green (180 degrees F), and then checked the oil temperature and noticed that it was normal. As he continued the flight he said watched the gauges more closely and a few minutes later the inlet coolant temperature began to climb to red line, while the coolant outlet temperature dropped to zero. He said that at that point he knew he was in trouble, and began to look for a location to land. He throttled back to half power, hoping to avoid a total engine power stoppage, and chose a cotton field to make an emergency landing. The cotton was tall in the field and as he was affecting the precautionary landing the airplane flipped over on its back, and stopped in a distance of less than 200 feet from its first contact with the cotton. The pilot said that at no time did the engine cease operating.

An FAA inspector conducted a postcrash examination of the airframe, the engine and accessories, and the examination revealed that the radiator had incurred no accident related damage, however there was a leak at the soldered radiator drain fitting.

Aircraft

Registration
N59486
Reported as
Roger A Dalke E.B. Jenny
Category
Airplane, amateur-built
Serial number
486
Airframe hours
69
Engine
Suzuki 1.0 Turbo, 70 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Lester E. Hershey
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · March 1, 2007
Departed
AKQ · Wakefield, VA
Destination
AKO

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
60
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1
Last flight review
March 1, 2007
Seat
Rear
Flight hours
12,850 total · 40 in this make and model · 7,710 as pilot in command · 89 in the last 90 days · 25 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 10 knots
Visibility
10 statute miles
Lowest ceiling
6,000 ft broken
Temperature
75 °F, dew point 64 °F
Altimeter
30.00 inHg
Observed at
RIC

FAA reports on this event · 1

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