FTW97LA257

NTSB accident investigation · Reiffer RS-15 · Ward, AR · July 3, 1997

Accident · Serious injuriesLimited investigationFinal report
Date
July 3, 1997, 14:45 local (19:45 UTC)
Place
Ward, AR
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8032HReiffer RS-15
Weather
Visual (VMC) · Day
Status
Completed · report January 7, 1998
Report
Approved by Office Director
FAA report
19970703017019A
Case key
20273

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's inadvertent stall. Factors were the pilot's failure to attain the proper touchdown point, his failure to use the flaps to obtain the proper touchdown point, and the pilot's lack of recent experience in the type of aircraft.

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
Flaps - not usedPilot in commandFactor
Lack of recent experience in type of aircraftPilot in commandFactor
Proper touchdown point - not attainedPilot in commandFactor
Stall - inadvertentPilot in commandCause
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

Witnesses reported that the glider was approaching to land with the landing gear extended at a normal speed and altitude; however, it floated at 6 to 8 feet above the runway. The witnesses stated that the glider's flaps were not deployed which accounted for the glider's extended flight over the runway without a perceived loss of altitude or airspeed. The witnesses further reported that as the glider was approximately 400 feet from the departure end of the east runway, the pilot elected to abort the landing and execute a climbing right turn with approximately 60 degrees bank angle. One witness stated that the glider 'appeared to stall at about 65 feet above the ground and dropped into trees' south of the runway. The 1979 glider was described as a high performance sailplane with a 40:1 glide ratio that relies solely on the flaps for airspeed and altitude control. Three full rotations are required to either extend or retract the flaps. The 19 hour glider pilot discussed 'going counter crank on the flaps' as a factor. The flap crank was not marked as to the direction (clockwise or counter-clockwise) required to extend and retract the flaps.

Factual narrative

On July 3, 1997, at 1445 central daylight time, an experimental Reiffer RS-15 glider, N8032H was substantially damaged while landing at a private airstrip near Ward, Arkansas. The commercial pilot, sole occupant of the glider, sustained serious injuries. The homebuilt glider aircraft was owned and operated by the pilot under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the personal flight for which a flight plan was not filed. The flight originated from the private airstrip approximately 10 minutes prior to the accident.

Witnesses reported to a local law enforcement officer that they observed the glider on its second flight of the day executing a standard left downwind for a landing to the east at the Edward's Sailplane Ranch. The witnesses further reported that the glider was coming in with the landing gear extended at a normal speed and altitude; however, it appeared to be floating at 6 to 8 feet above the runway. Both witnesses stated that the glider's flaps were not deployed which accounted for the glider's extended flight over the runway without a perceived loss of altitude.

The witnesses, who were standing by the hangar door, reported that as the glider was approximately 400 feet from the departure end of the east runway, the pilot elected to abort the landing and execute a climbing right turn with approximately 60 degrees bank angle. One witness stated that the glider "appeared to stall at about 65 feet above the ground and dropped into trees" south of the runway.

Both wings separated from the fuselage as the glider crashed through 60 foot tall trees, coming to rest in the upright position in a shallow creek. The pilot was evacuated by air ambulance to a nearby hospital where he stayed for 2 days.

The 1979 glider was described as a high performance sailplane with a 40:1 glide ratio that relies solely on the flaps (not equipped with spoilers) for glide path and airspeed control. The flaps, which extend to a maximum of 90 degrees, are extended and retracted by the pilot by a hand crank located in the cockpit. Three full rotations are required to either extend or retract the flaps.

In the narrative portion of the enclosed NTSB Form 6120.1/2, as well as during telephone conversations with the pilot, the pilot discussed "going counter crank on the flaps" as a factor. The FAA inspector stated that the flap crank was not marked as to the direction (clockwise or counter-clockwise) required to extend and retract the flaps. The pilot had accumulated at total of 19 hours in gliders, of which 15.8 hours were in the same make and model. A total of 2.1 hours were flown by the pilot in the same and model within 30 days preceding the accident.

Aircraft

Registration
N8032H
Reported as
Reiffer RS-15
Category
Glider, amateur-built
Serial number
48
Airframe hours
102
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Harvey L. Bell
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · June 16, 1997 · 1 hours before
Departed
NONE
Airport
NONE · Edward'S Sailplane Ranch, runway 9, 2,500 × 75 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
54
Certificates
Commercial, Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Seat
Center
Flight hours
2,900 total · 16 in this make and model · 200 as pilot in command · 3 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 3 knots
Visibility
6 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 81 °F
Altimeter
29.00 inHg
Observed at
LRF, 12 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.