FTW94LA151

NTSB accident investigation · Rolladen-Schneider LS-4 · Elbert, CO · May 8, 1994

Accident · No injuriesLimited investigationFinal report
Date
May 8, 1994, 16:00 local (22:00 UTC)
Place
Elbert, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4MNRolladen-Schneider LS-4
Weather
Visual (VMC) · Day
Status
Completed · report December 7, 1994
Report
Approved by Office Director
FAA report
19940508010329A
Case key
19052

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

Inadequate visual lookout on the part of both pilots. A factor was poor airport operations.

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 control - in flightLanding - flare/touchdown
Visual lookout - inadequatePilot in commandCause
Airport operations - poorAirport personnelFactor
Dragged wing,rotor,pod,float or tail/skidLanding - flare/touchdown

Analysis

During short final for landing in a glider, the pilot saw a tow plane turning right just off his right side and took evasive action to the left to avoid what he interpreted to be an imminent collision. During this action the left wing of the glider contacted the ground and the glider impacted on the left wing and nose. The tow plane made a normal landing in the designated tow plane landing area. The pilot was unaware the glider was beside him. The glider runway and tow plane runway are next to each other and are a runway and taxiway used as a runway, as published in the airport operating instructions. The tow plane was not equipped with a radio; therefore, he did not hear the glider pilot's transmitted intentions.

Factual narrative

On May 8, 1994, at 1600 mountain daylight time, a Rolladen Schneider LS-4 glider, N4MN, sustained substantial damage during landing at Kelly Air Park, Elbert, Colorado. The pilot was not injured and no flight plan was filed. Visual meteorological conditions prevailed.

According to the pilot, he was just off the ground during landing when he saw an airplane just off his right side in a right hand turn. He stated he thought a midair collision was eminent and turned left to avoid the aircraft. The left wing of the glider bounced off the ground resulting in a nose low, left wing down collision with the ground.

A witness indicated the glider and the airplane were approaching to land approximately 15 feet apart, wing to wing, when the glider suddenly veered left and collided with the ground.

Investigation revealed that the runway area being used by the aircraft was a grass strip next to the runway and that the aircraft radio was inoperative. The pilot of the aircraft did not hear the glider pilot call in and did not see the glider. The two were lined up to land simultaneously, each on the runway specified for the type.

Attached is an airport diagram and airport operating instructions. These provide information that the runway and taxiways are both used for arrivals and departures, are in close proximity to each other, and have opposing traffic patterns.

Aircraft

Registration
N4MN
Reported as
Rolladen-Schneider LS-4
Category
Glider
Serial number
4086
Airframe hours
450
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Killing, Fredo P.
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · February 1, 1994
Airport
CO15 · Kelly Air Park, runway 35, 3,800 × 24 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Certificate
Private
Seat
Front
Flight hours
640 total · 150 in this make and model · 640 as pilot in command · 4 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 25 °F
Altimeter
30.00 inHg
Observed at
COS, 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.