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NTSB Report
November 14, 1992 · Glaser-Dirks DG400 · N360GG
Calistoga, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
November 14, 1992
Injury Outcomes
No injuries (1 uninjured)
Location
Calistoga, CA
Aircraft
Glaser-Dirks DG400
Tail Number
N360GG
Operator
Gary B Gammal
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX93LA039
THE PILOT SAID, AND GROUND WITNESSES CONFIRMED, THAT HE LANDED IN A 15 KNOT TAILWIND ON THE APPROACH END OF THE RUNWAY. WHEN THE PILOT APPLIED THE BRAKES TO STOP THE GLIDER, NO RESISTANCE WAS FELT ON THE BRAKE CONTROL HANDLE AND THE GLIDER WOULD NOT SLOW DOWN. THE PILOT SAID THAT WHEN HE KNEW HE COULD NOT STOP PRIOR TO OVER RUNNING THE END OF THE RUNWAY HE STEERED THE AIRCRAFT TOWARD A WOODEN WALL OF A COMMERCIAL BUILDING INSTEAD OF LETTING THE AIRCRAFT CONTINUE TOWARD A CHAIN LINK FENCE. AN FAA AIRWORTHINESS INSPECTOR EXAMINED THE EXPERIMENTAL GLIDER AND FOUND THAT A 1.6MM STEEL CABLE WHICH RUNS BETWEEN THE COCKPIT BRAKE HANDLE AND THE MAIN WHEEL BRAKE ACTUATOR HAD SEPARATED. THE INSPECTOR REPORTED THAT THE REASON FOR THE CABLE FAILURE COULD NOT BE DETERMINED.
NTSB Probable Cause
THE FAILURE OF THE BRAKES DUE TO A SEPARATION OF THE BRAKE CABLE FOR UNDETERMINED REASONS. A FACTOR IN THE ACCIDENT WAS THE TAILWIND CONDITION DURING THE LANDING ROLLOUT.
Full Narrative
THE PILOT SAID, AND GROUND WITNESSES CONFIRMED, THAT HE LANDED IN A 15 KNOT TAILWIND ON THE APPROACH END OF THE RUNWAY. WHEN THE PILOT APPLIED THE BRAKES TO STOP THE GLIDER, NO RESISTANCE WAS FELT ON THE BRAKE CONTROL HANDLE AND THE GLIDER WOULD NOT SLOW DOWN. THE PILOT SAID THAT WHEN HE KNEW HE COULD NOT STOP PRIOR TO OVER RUNNING THE END OF THE RUNWAY HE STEERED THE AIRCRAFT TOWARD A WOODEN WALL OF A COMMERCIAL BUILDING INSTEAD OF LETTING THE AIRCRAFT CONTINUE TOWARD A CHAIN LINK FENCE. AN FAA AIRWORTHINESS INSPECTOR EXAMINED THE EXPERIMENTAL GLIDER AND FOUND THAT A 1.6MM STEEL CABLE WHICH RUNS BETWEEN THE COCKPIT BRAKE HANDLE AND THE MAIN WHEEL BRAKE ACTUATOR HAD SEPARATED. THE INSPECTOR REPORTED THAT THE REASON FOR THE CABLE FAILURE COULD NOT BE DETERMINED.
Flight
Event TypeAccident
Event Time15:00 PST
Nearest AirportCalistoga Glider Port (0nm N)
Runway29
Runway Length2600 ft
Runway Width20 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGlaser-Dirks DG400
Tail NumberN360GG
Aircraft CategoryGli
DamageSubstantial
OperatorGary B Gammal
Operating RulePart 91
Engines0
Engine TypeUnknown
Engine DetailsUnknown
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 65 · None
Conditions
ConditionsVMC
LightDaylight
Wind90° @ 15 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO