CHI04LA014

NTSB accident investigation · Croke Zenith CH 701 · Brussels, WI · October 16, 2003

Accident · No injuriesLimited investigationFinal report
Date
October 16, 2003, 18:00 local (23:00 UTC)
Place
Brussels, WI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N701USCroke Zenith CH 701
Weather
Visual (VMC) · Day
Status
Completed · report April 28, 2005
Report
Approved by Office Director
Parties
FAA Milwaukee, WI FSDO
FAA report
20031016029249A
Case key
58173

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

A partial loss of engine power for undetermined reasons.

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) - nonmechanicalGo-around (vfr)
Reason for occurrence undeterminedCause
Forced landingEmergency descent/landing
In flight collision with objectEmergency landing
Object - tree(s)

Analysis

The experimental amateur built airplane collided with trees during a forced landing following a go-around on runway 18 (1,000 feet by 20 feet, grass). The pilot stated he was not happy with the approach so he initiated a go-around from an altitude of about 15 feet above the ground. He reported the engine only produced about 4,000 rpm instead of the normal 5,300 rpm when he applied full power. The pilot reported he was unable to sustain a climb with the reduced power and the airplane settled into trees in a wooded area off the south end of the airstrip. The airplane was powered by a Rotax 912 UL, 80 horsepower engine. The engine had accumulated about 100 hours when the pilot purchased it with an additional 2 hours since it was installed on the accident airplane. On the NTSB Form 6120.1/2, the pilot reported there were no mechanical malfunctions or failures.

Factual narrative

On October 16, 2003, at 1800 central daylight time, an experimental amateur built Croke Zenith CH 701, N701US, collided with trees during a forced landing one-quarter mile from the pilot's private airstrip following a go-around from runway 18 (1,000 feet by 20 feet, grass) in Brussels, Wisconsin. The pilot was not injured. The airplane was substantially damaged. The 14 CFR Part 91 personal flight was being conducted in visual meteorological conditions without a flight plan. The local flight originated from the private airstrip at 1730.

The pilot reported that after a local flight he returned to the airstrip to land. He stated he was not happy with the approach so he initiated a go-around from an altitude of about 15 feet above the ground. He reported the engine only produced about 4,000 rpm instead of the normal 5,300 rpm when he applied full power. The pilot reported he was unable to sustain a climb with the reduced power and the airplane settled into trees in a wooded area off the south end of the airstrip.

The airplane was powered by a Rotax 912 UL, 80 horsepower engine. The engine had accumulated about 100 hours when the pilot purchased it with an additional 2 hours since it was installed on the accident airplane.

On the NTSB Form 6120.1/2, the pilot reported there were no mechanical malfunctions or failures.

Aircraft

Registration
N701US
Reported as
Croke Zenith CH 701
Category
Airplane, amateur-built
Serial number
7-4514
Engine
Rotax 912 UL, 80 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Jonathon P. Croke
Airworthiness certificate
Special, Experimental (Special)
Last inspection
January 1, 2002
Departed
PVT · Brussels, WI
Destination
PVT
Airport
PVT, runway 18, 1,000 × 20 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
46
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
August 1, 2002
Seat
Left
Flight hours
235 total · 75 in the last 90 days · 20 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 27 °F
Altimeter
30.11 inHg
Observed at
GRB, 30 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 N701US · 1

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