NYC08LA196

NTSB accident investigation · Boeing A75N1 · Romney, WV · May 25, 2008

Accident · Minor injuriesLimited investigationFinal report
Date
May 25, 2008, 14:00 local (18:00 UTC)
Place
Romney, WV
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N46996Boeing A75N1
Defining event
Takeoff: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report March 23, 2009
Report
Approved by Office Director
Parties
FAA/FSDO
FAA report
20080525835539A
Case key
68097

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

A partial loss of engine power during takeoff due to failure of the left magneto. Contributing to the accident was unsuitable terrain to conduct a forced landing.

Findings · 3

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.

Ignition system: magneto/distributorAircraft › Aircraft power plant · FailureBoeing A75N1: 1 caseAll aircraft: 101 casesProbable cause
Terrain: mountainous/hilly terrainEnvironmental issues › Physical environment · Contributed to outcomeBoeing A75N1: 1 caseAll aircraft: 329 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Contributed to outcomeBoeing A75N1: 1 caseAll aircraft: 933 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 departed the turf runway and, shortly after takeoff, the airplane experienced a partial loss of engine power. Unable to out-climb the rising terrain, the pilot intentionally allowed the airplane to stall into the treetops of a heavily wooded area. Examination of the airplane revealed that the left magneto would not produce spark when rotated and subsequent disassembly of the magneto revealed that the cam follower was broken. The magneto had been operated for about 300 hours since it was installed during October 2001. The prior service history of the magneto could not be determined, except that it was in storage for about 9 years prior to its installation on the accident airplane.

Factual narrative

On May 25, 2008, about 1400 eastern daylight time, a Boeing A75N1 (Stearman), N46996, was substantially damaged when it impacted terrain, after it experienced a partial loss of engine power, during takeoff from a private airstrip in Romney, West Virginia. The certificated commercial pilot and the passenger sustained minor injuries. Visual meteorological conditions prevailed and no flight plan had been filed for the personal local flight conducted under the provisions of 14 Code of Federal Regulations Part 91. According to the pilot, the airplane departed to the south from a turf runway; however, shortly after takeoff, the airplane experienced a partial loss of engine power. Unable to out-climb rising terrain, the pilot intentionally allowed the airplane to stall into the treetops. The airplane's left wing struck a large pine tree, and the airplane came to rest in a heavily wooded area. Examination of the airplane was conducted by a Federal Aviation Administration inspector. The examination revealed that the left magneto would not produce spark when rotated and subsequent disassembly of the magneto revealed that the cam follower was broken. According to the inspector, the magneto was installed at the time of the engine's most recent overhaul, which was performed on October 18, 2001. The engine had been operated for about 300 hours since the overhaul. The inspector further stated that the prior service history of the magneto could not be determined, except that it was in storage for about 9 years prior to its installation on the accident airplane.

Aircraft

Registration
N46996
Reported as
Boeing A75N1
Category
Airplane
Serial number
75-3736
Airframe hours
6,715
Engine
Continental W670, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Dennis Caruso
Registered owner
Kent Shanholtz
Airworthiness certificate
Standard, Aerobatic
Last inspection
Annual · May 22, 2008 · 4 hours before
Departed
NONE · Romney, WV
Destination
NONE · Romney, WV
Airport
NONE · Private, runway 18, 3,000 × 175 ft, grass/turf

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
54
Injuries
Minor
Certificates
Commercial, Private
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 2, With waivers/limitations
Last flight review
August 19, 2007
Seat
Front
Flight hours
3,950 total · 2,100 in this make and model · 35 in the last 90 days · 20 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 39 °F
Altimeter
29.30 inHg
Observed at
CBE, 18 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.