CEN12LA629

NTSB accident investigation · Varga 2150A · Clinton, IA · September 13, 2012

Accident · No injuriesLimited investigationFinal report
Date
September 12, 2012, 19:15 local (Sep 13, 2012, 00:15 UTC)
Place
Clinton, IA
Injuries
3 uninjured
Phase of flight
Landing
Aircraft
N4651VVarga 2150AN3793FGreat Lakes 2T-1A-2
Defining events
Landing-landing roll: Collision during takeoff/landLanding-landing roll: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report December 11, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA - Des Moines FSDO
Case key
85023

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

The pilot of the other airplane failing to adequately monitor for other aircraft while landing.

The pilot's failure to adequately monitor for other aircraft while landing.

Findings · 2

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.

N4651V · Varga 2150A

Attention/monitoring: monitoring other aircraftPersonnel issues › Psychological · Pilot of other aircraftVarga 2150A: 1 caseAll aircraft: 231 casesProbable cause

N3793F · Great Lakes 2T-1A-2

Attention/monitoring: monitoring other aircraftPersonnel issues › Psychological · PilotAll aircraft: 231 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.

N4651V · Varga 2150A

N3793F · Great Lakes 2T-1A-2

Analysis

The pilot of a Great Lakes biplane was landing when the airplane struck the rear of a Varga airplane that had previously landed and was still on the runway. According to the pilot of the Great Lakes, he did not see the other airplane until the impact occurred. The Varga had completed a straight-in approach following a practice instrument approach. The Great Lakes landed using a left hand traffic pattern approach to landing. FAA regulations state that when two airplanes are approaching to land at the same airport, the airplane at the lower altitude has the right of way. The airport was a non-towered airport, and both pilots reported that they had announced their positions in the airport traffic pattern. Regulations did not prohibit the use of a straight-in approach.

The pilot of a Great Lakes biplane was landing when the airplane struck the rear of a Varga airplane that had previously landed and was still on the runway. According to the pilot of the Great Lakes, he did not see the other airplane until the impact occurred. The Varga had completed a straight-in approach following a practice instrument approach. The Great Lakes landed using a left hand traffic pattern approach to landing. FAA regulations state that when two airplanes are approaching to land at the same airport, the airplane at the lower altitude has the right of way. The airport was a non-towered airport, and both pilots reported that they had announced their positions in the airport traffic pattern. Regulations did not prohibit the use of a straight-in approach.

Factual narrative

On September 12, 2012, about 1915 central daylight time, a Varga model 2150A, N4651V, was struck from behind by a Great Lakes 2T-1A-2 airplane, N3793F, while landing on runway 21 at the Clinton Municipal Airport (CWI), Clinton, Iowa. There were no injuries. The tail of N4651V was severed by the propeller of N3793F. N4651V was registered to and operated by the commercial pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. N3793F was registered to an individual and operated by the private pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the accident. Neither airplane was operating on a flight plan. N4651V departed CWI for a local flight about 1810. N3793F departed the Davenport Municipal Airport, Davenport, Iowa, about 1830. The pilot of N4651V reported that he was returning from a local flight and had performed a practice VOR runway 21 instrument approach on his return to the airport. He stated that he made several radio transmissions on the airport's common traffic advisory frequency (CTAF) to report his position and intention to land. He stated that he did not hear any transmissions from aircraft in the CWI traffic pattern during his approach to the runway. He reported that after landing he heard a faint transmission on the CTAF frequency "...Clinton, short final...". The pilot reported that he was preparing to exit on a taxiway, and while still on the runway after landing he felt a sudden impact and he applied the brakes as firmly as possible. His airplane continued to move in a direction that resulted in an impact with a runway light and taxiway sign. Upon exiting the airplane he discovered that the tail of his airplane had been almost completely severed. The pilot of N3793F reported that as he approached CWI he made several radio transmissions on the CTAF frequency announcing his position and intention to land. He stated that he heard no radio transmissions from other aircraft in the CWI traffic pattern and entered a left hand traffic pattern for runway 21. He announced his position when he was downwind, base, and final for runway 21. He reported that as the airplane was rolling out after touchdown, he suddenly saw the vertical tail of another airplane coming up his right side. He stated that he did not know that there was another airplane on the runway. N3793F struck the tail and aft fuselage of N4651V. 14 CFR 91.113g states that aircraft, while on final approach to land or while landing, have the right-of-way over other aircraft in flight or operating on the surface, except that they shall not take advantage of this rule to force an aircraft off the runway surface which has already landed and is attempting to make way for an aircraft on final approach. When two or more aircraft are approaching an airport for the purpose of landing, the aircraft at the lower altitude has the right-of-way, but it shallnot take advantage of this rule to cut in front of another which is on final approach to land or to overtake that aircraft. CWI was a non-towered airport and regulations did not prohibit use of a straight-in approach for landing at non-towered airports.

On September 12, 2012, about 1915 central daylight time, a Varga model 2150A, N4651V, was struck from behind by a Great Lakes 2T-1A-2 airplane, N3793F, while landing on runway 21 at the Clinton Municipal Airport (CWI), Clinton, Iowa. There were no injuries. The tail of N4651V was severed by the propeller of N3793F. N4651V was registered to and operated by the commercial pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. N3793F was registered to an individual and operated by the private pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the accident. Neither airplane was operating on a flight plan. N4651V departed CWI for a local flight about 1810. N3793F departed the Davenport Municipal Airport, Davenport, Iowa, about 1830. The pilot of N4651V reported that he was returning from a local flight and had performed a practice VOR runway 21 instrument approach on his return to the airport. He stated that he made several radio transmissions on the airport's common traffic advisory frequency (CTAF) to report his position and intention to land. He stated that he did not hear any transmissions from aircraft in the CWI traffic pattern during his approach to the runway. He reported that after landing he heard a faint transmission on the CTAF frequency "...Clinton, short final...". The pilot reported that he was preparing to exit on a taxiway, and while still on the runway after landing he felt a sudden impact and he applied the brakes as firmly as possible. His airplane continued to move in a direction that resulted in an impact with a runway light and taxiway sign. Upon exiting the airplane he discovered that the tail of his airplane had been almost completely severed. The pilot of N3793F reported that as he approached CWI he made several radio transmissions on the CTAF frequency announcing his position and intention to land. He stated that he heard no radio transmissions from other aircraft in the CWI traffic pattern and entered a left hand traffic pattern for runway 21. He announced his position when he was downwind, base, and final for runway 21. He reported that as the airplane was rolling out after touchdown, he suddenly saw the vertical tail of another airplane coming up his right side. He stated that he did not know that there was another airplane on the runway. N3793F struck the tail and aft fuselage of N4651V. 14 CFR 91.113g states that aircraft, while on final approach to land or while landing, have the right-of-way over other aircraft in flight or operating on the surface, except that they shall not take advantage of this rule to force an aircraft off the runway surface which has already landed and is attempting to make way for an aircraft on final approach. When two or more aircraft are approaching an airport for the purpose of landing, the aircraft at the lower altitude has the right-of-way, but it shallnot take advantage of this rule to cut in front of another which is on final approach to land or to overtake that aircraft. CWI was a non-towered airport and regulations did not prohibit use of a straight-in approach for landing at non-towered airports.

Aircraft · 2

Registration
N4651V
Reported as
Varga 2150A
Category
Airplane
Serial number
VAC-101-78
Airframe hours
1,799
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 22, 2012
Departed
CWI · Clinton, IA
Destination
CWI · Clinton, IA
Airport
CWI · Clinton Municipal Airport, runway 21, 5,204 × 100 ft, concrete

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.

Registration
N3793F
Reported as
Great Lakes 2T-1A-2
Category
Airplane
Serial number
0767
Airframe hours
1,591
Engine
Lycoming AEIO-360 SER, 180 horsepower, reciprocating
Damage
Minor damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 2012
Departed
DVN · Davenport, IA
Destination
CWI · Clinton, IA
Airport
CWI · Clinton Municipal Airport, runway 21, 5,204 × 100 ft, concrete

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N4651V
Age
70
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
February 25, 2011
Seat
Front
Flight hours
2,440 total · 51 in this make and model · 2,219 as pilot in command · 26 in the last 90 days · 14 in the last 30 days · 1 in the last 24 hours
Role
Pilot, aircraft N3793F
Age
57
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
June 8, 2011
Seat
Rear
Flight hours
1,496 total · 360 in this make and model · 1,496 as pilot in command · 39 in the last 90 days · 17 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 9 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 55 °F
Altimeter
30.03 inHg
Observed at
CWI

Docket · 2

The files NTSB released with the investigation on September 26, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.1 MB in all.

FAA reports on this event · 2

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