NYC97LA132

NTSB accident investigation · Globe GC-1B · Yates, NY · June 30, 1997

Accident · No injuriesLimited investigationFinal report
Date
June 30, 1997, 19:00 local (23:00 UTC)
Place
Yates, NY
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
CFNXLGlobe GC-1B
Weather
Visual (VMC) · Day
Status
Completed · report February 28, 2000
Report
Approved by Office Director
Case key
39391

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 failure of the cylinder bolts, and the lack of suitable terrain for a forced landing.

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
Engine assembly,cylinder - failureCause
Forced landingDescent - emergency
On ground/water collision with objectLanding - roll
Terrain condition - none suitableCause
Terrain condition - rough/uneven

Analysis

The Canadian pilot was cruising at 7,500 feet overflying Lake Ontario, when the engine started to run rough. Due to better weather to the south, he turned south and made a forced landing in a field. An inspector from the FAA reported that there were no suitable fields nearby. The tailwheel had separated from the airplane and the wing spars were bent where they attach to the main landing gear. Examination of the engine revealed that cylinder hold-down bolts for the number three cylinder had failed even with the cylinder flange except for one that was stripped. The engine was last overhauled in 1981, about 445 hours prior to the accident.

Factual narrative

On June 30, 1997, about 1900 eastern daylight time, a Globe, GC-1B, Canadian Registration, CF-NXL, was substantially damaged during a forced landing in Yates, New York. The Canadian certificated private pilot was not injured. Visual meteorological conditions prevailed for the flight that departed London, Ontario, Canada, about 1745. The flight was conducted under a Canadian visual flight rules flight plan.

An Inspector from the Federal Aviation Administration (FAA) reported the pilot was en route to Kingston, Ontario, at 7,500 feet, overflying Lake Ontario, when the engine began to run rough and lost power. The pilot was unable to establish radio contact with Toronto Approach Control. He then established radio contact with Buffalo Approach Control, and due to weather to the north, diverted to the south, toward New York State.

Examination of the landing site and airplane revealed the landing surface was rough and uneven and there were no suitable fields nearby. The tail wheel had separated from the airframe, and both wing spars were twisted where the landing gear was attached. Examination of the engine, a Lycoming O-320-A3A, revealed that the number three cylinder had separated from the engine. According to a report from an FAA inspector:

"...The number three cylinder of the Lycoming O-320 engine had separated from the crankcase. Investigation revealed the suds had failed at their shank. One had stripped the thread on the nut side and rest broke flush with the case flange. The conditions usually occurs due to overtorquing of these nuts causing the studs to stretch and break...."

The engine was last overhauled in 1981, and had accumulated about 445 hours at the time of the accident.

The FAA Inspector assigned to the accident reported that he presented the pilot with the NTSB Form 6120.1/2 to complete. When the pilot failed to complete the form, the inspector sent a 2nd copy, which was returned unclaimed.

The pilot was sent another copy of the form via Federal Express, which was delivered, to the pilot's address on February 23, 1998. An enclosed letter requested the pilot to complete the form and contact the NTSB if he had any questions. As of May 5, 1998, the pilot has not contacted the NTSB nor has the NTSB received the completed form.

Aircraft

Registration
CFNXL
Reported as
Globe GC-1B
Category
Airplane
Serial number
260
Engine
Lycoming O-320-A3A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Yves P. Starreveld
Airworthiness certificate
Standard, Normal
Departed
YXU · London, Ontario
Destination
YGK · Kingston, Ont.
Flight plan
VFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
29
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
250 total · 45 in this make and model · 45 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
0° at 6 knots
Visibility
8 statute miles
Lowest ceiling
15,000 ft broken
Temperature
82 °F, dew point 68 °F
Altimeter
29.00 inHg
Observed at
ROC, 35 nm away