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June 19, 1999 · Schempp-Hirth Cirrus · N8145

Hartford, WI

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 19, 1999
Injury Outcomes
No injuries (1 uninjured)
Location
Hartford, WI
Aircraft
Schempp-Hirth Cirrus
Tail Number
N8145
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI99LA189

The pilot said that he was practicing deployment of the drogue chute during a landing in the glider. He said that the chute did not release and a landing short of the runway occurred. During the landing roll the glider impacted a roadway embankment. This glider had a history of the drogue chute not releasing previously. Subsequent to the accident an examination of the drogue chute mechanism failed to reveal any anomalies. There was no maintenance manual available for the glider to check the rigging of the release cable.

NTSB Probable Cause

the reason for the occurrence was undetermined. Factors were the pilot's deploying of the drogue chute, the drogue chute malfunctioning, a dirt embankment, and encountering unsuitable terrain during landing.

Full Narrative

On June 19, 1999, at 1600 central daylight time, a Schempp-Hirth Cirrus (glider), N8145, experienced an undershoot to runway 18 at the Hartford Municipal Airport, near Hartford, Wisconsin. The glider sustained substantial damage. The pilot reported no injuries. The personal 14 CFR Part 91 flight was operating in visual meteorological conditions. No flight plan was on file. The local flight departed about 1400. The pilot said he was approached runway 18 with the wind was from the east. The pilot said that he initiated a high approach with the intention of practicing the deployment of a drogue chute. He said that subsequently, when he attempted to release the chute, it did not release and he was unable to reach the runway where he intended to land. He said that on landing the glider impacted a road embankment. In a second interview, the pilot revealed that the glider had a history of the drogue chute "hanging" up when deployed during a crosswind landing with a rudder deflection. The pilot produced a copy of the "Open Cirrus Newsletter" published in 1996, where the former owner of N8145 (the same glider) experienced a similar instance where the drogue chute failed to release. A test of the release mechanism after the accident, failed to reveal any problem with releasing the chute; however, due to the unavailability of the maintenance manual for this German built glider, it was not possible to determine if the cable or rigging was correct. The test was conducted prior to receiving the newsletter article indicating a test conducted with one or more revolutions of the drogue chute shroud lines would replicate the failure to release. The drogue chute was not tested in this manner during the most recent examination. There were 170 Schempp-Hirth Cirrus gliders manufactured circa 1969. Approximately 31 were imported into the United States and Canada, of which about 20 are currently in service. A group of owners and enthusiasts formed the Vintage Sailplane Association. A division within that organization is the "Classic Division." The current chairman of that division is an owner of a Cirrus glider and the writer/publisher of the "Open Cirrus Newsletter." He was interviewed and said that the drogue chute installed on the Cirrus glider is for emergency use and utilized primarily for landing in small fields. He said that to his knowledge all the Cirrus gliders were imported with the drogue chute; however, some of the glider owners had removed the chute. He said that he and other owners/operators of the glider do on occasion use the chute for practice, and for what he described as "photo ops." He said he was aware of the reported problems with the chute not releasing; however, said he had never experienced it himself. He indicated that he would cover the topic in his next issue of the "Open Cirrus Newsletter" to owners. He said that the owners of the Cirrus sailplane are a small group and that they are in contact with one another on a regular basis. He indicated that there are only a few glider manufacturers who employ the drogue chute at all. He noted there was one manufacturer to use it as the sole "high drag device."

Flight

Event TypeAccident
Event Time16:00 CDT
Nearest AirportHartford Municipal (0nm)
Runway18
Runway Length2250 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftSchempp-Hirth Cirrus
Tail NumberN8145
Aircraft CategoryGli
DamageSubstantial
Operating RulePart 91
Engine TypeUnknown
Engine DetailsUnknown
Seats1

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 42 · None

Conditions

ConditionsVMC
LightDaylight
Wind90° @ 12 kt, gusting 15 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data