CHI00LA099

NTSB accident investigation · Aeronca 11AC · Ft. Leavenworth, KS · March 25, 2000

Accident · No injuriesLimited investigationFinal report
Date
March 25, 2000, 17:30 local (23:30 UTC)
Place
Ft. Leavenworth, KS
Injuries
3 uninjured
Phase of flight
Landing
Aircraft
N9570EAeronca 11ACN51933New EAA Biplane P2
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2001
Report
Approved by Office Director
Case key
51052

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 of N51933 did not see and maintain clearance from N9570E. A factor associated with the accident was the pilot of N51933's restricted forward visibility during the landing due to the tailwheel configuration. An additional factor was the pilot of N51933 entered the traffic pattern on base leg and flew a short final approach which reduced his ability to look for other traffic.

the pilot of N51933 did not see and maintain clearance from N9570E. A factor associated with the accident was the pilot of N51933's restricted forward visibility during the landing due to the tailwheel configuration. An additional factor was the pilot of N51933 entered the traffic pattern on base leg and flew a short final approach which reduced his ability to look for other traffic.

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.

On ground/water collision with objectLanding - roll
Touch-and-go - performedPilot in command
Comm/nav equipment,transceiver - not installed
Planned approach - inadequatePilot of other aircraftFactor
Visual lookout - restrictedPilot of other aircraftFactor
Identification of aircraft visually - not obtainedPilot of other aircraftCause
Clearance - not maintainedPilot of other aircraftCause
On ground/water collision with objectLanding - flare/touchdown
Touch-and-go - performedPilot of other aircraft
Planned approach - inadequatePilot in commandFactor
Visual lookout - restrictedPilot in commandFactor
Identification of aircraft visually - not obtainedPilot in commandCause
Clearance - not maintainedPilot in commandCause

Analysis

N9570E, an Aeronca 11AC, was practicing touch and go landings on runway 15. The airplane touched down and the pilot was transitioning the airplane for takeoff when it was struck from behind by N51933, an EAA Biplane P2, which landed on the same runway. N9570E was not equipped with a radio. N51933 was equipped with a radio and the pilot reported he made position reports in the traffic pattern. Both airplanes were tailwheel equipped. The pilot of N51933 reported that he looked for other airplanes in the traffic pattern and did not see any. The pilot of N51933 reported the accident may have been prevented had he not made a short final approach and if he had entered the traffic pattern on downwind instead of on a base leg.

N9570E, an Aeronca 11AC, was practicing touch and go landings on runway 15. The airplane touched down and the pilot was transitioning the airplane for takeoff when it was struck from behind by N51933, an EAA Biplane P2, which landed on the same runway. N9570E was not equipped with a radio. N51933 was equipped with a radio and the pilot reported he made position reports in the traffic pattern. Both airplanes were tailwheel equipped. The pilot of N51933 reported that he looked for other airplanes in the traffic pattern and did not see any. The pilot of N51933 reported the accident may have been prevented had he not made a short final approach and if he had entered the traffic pattern on downwind instead of on a base leg.

Factual narrative

See Narrative for CHI00LA099A.

On March 25, 2000, at 1730 central standard time, an Aeronca 11AC, N9570E, and an EAA Biplane P2, N51933, collided on runway 15 at Sherman AFB, Ft. Leavenworth, Kansas. N9570E was being operated by a commercial pilot, who along with his passenger were not injured. N51933 was operated by a private pilot who was not injured. Both airplanes received substantial damage. Both airplanes were being operated under 14 CFR Part 91 in visual meteorological conditions without flight plans. N9570E had originally departed from Platte City, Missouri, at 1700 cst and was practicing touch and go landings at Sherman AFB. N51933 departed from St. Joseph, Missouri, around 1650 cst and was landing at Sherman AFB.

The pilot of N9570E reported that he was practicing touch and go landings and was on the 4th or 5th landing when the accident occurred. He reported he had touched down and was in the process of transitioning for takeoff when the rear of his airplane was struck by N51933. He reported the airplanes were approximately 1,500 feet from the approach end of the runway when the accident occurred.

The pilot of N51933 reported that he made a radio call on 126.2 when he was about 3 miles north-northeast of the airport. He reported the radio call was answered by another aircraft in the area. This aircraft informed him that runway 15 was the active runway at Sherman AFB, and that there was possibly another airplane making touch and go landings at the airport. The pilot reported he entered a left base for runway 15 at which time he made another radio call reporting his position. According to the pilot of N51933, he looked down the runway and did not see any other airplanes. He reported he turned onto final approach, made another radio call, and looked for traffic again without seeing any. The pilot of N51933 continued to report he set up for the landing, looking out the right side of the open cockpit to maintain runway alignment. He reported the airplane bounced during the landing then settled back to the runway after which time he applied light braking and pulled the throttle to idle. He reported, "Maybe about 50' later I glanced towards [the] left side saw the yellow tail of the Aeronca. I immediately gave 933 Rt. rudder and brake, it was too late, contact was made in seconds, my left lower wing rode over his Rt. horizontal stabilizer and my left wing struck his right wing." He reported that his propeller also contacted the right wing of N9570E. He estimated that his speed was about 35 miles per hour when the contact occurred.

N9570E was not equipped with a radio. Both airplanes were tailwheel equipped. The pilot of N51933 recommended that the accident may have been prevented had he not made a short final approach and if he had entered the traffic pattern on downwind instead of on a base leg.

Aircraft · 2

Registration
N9570E
Reported as
Aeronca 11AC
Category
Airplane
Serial number
1208
Airframe hours
1,644
Engine
Continental A-65, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Eunice E. Wamsley
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 10, 1999 · 78 hours before
Departed
FLV
Destination
FLV
Airport
FLV · Sherman Aaf, runway 15, 5,905 × 100 ft, asphalt

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
N51933
Reported as
New EAA Biplane P2 (EAA BIPLAN)
Category
Airplane, amateur-built
Serial number
31852
Airframe hours
371
Engine
Lycoming O-290-G, 135 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Markus W. Wallner
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · November 5, 1999 · 12 hours before
Departed
STJ · St. Joseph, MO
Destination
FLV
Airport
FLV · Sherman Aaf, runway 15, 5,905 × 100 ft, asphalt

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N9570E
Age
58
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
2,226 total · 120 in this make and model · 1,997 as pilot in command · 23 in the last 90 days · 8 in the last 30 days · 3 in the last 24 hours
Role
Pilot, aircraft N51933
Age
73
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Invalid Medical for flight
Seat
Front
Flight hours
983 total · 148 in this make and model · 983 as pilot in command · 7 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 36 °F
Altimeter
30.00 inHg
Observed at
MCI, 11 nm away

FAA reports on this event · 2

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