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NTSB Report
February 22, 1990 · Grumman G-164A · N930X
Glynn, LA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 22, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Glynn, LA
Aircraft
Grumman G-164A
Tail Number
N930X
Operator
Tell Ag Service
Injuries
None
Aircraft Damage
Substantial
NTSB Number
FTW90DRD03
THE AIRPLANE WAS BEING POSITIONED TO A LOCATION FOR AN AG OPERATION. WHILE LANDING ON A ROAD, THE RIGHT TIRE STARTED SKIDDING AND THE AIRPLANE RAN OFF THE RIGHT SIDE OF THE ROAD. IT CROSSED A SMALL DITCH, THEN A DRAINAGE CANAL, AND STOPPED ON THE OPPOSITE BANK OF THE CANAL. INSPECTION REVEALED THAT THE RIGHT BRAKE MASTER CYLINDER ACTUATOR ROD WAS SCORED AND HAD WEAR MARKS, AND THE BRAKE WOULD INTERMITTENTLY STICK, HOLDING PRESSURE ON THE RIGHT BRAKE. THE STICKING WAS CAUSED BY THE PARKING BRAKE LEVER HOLDING ONTO THE WEAR GROOVES.
NTSB Probable Cause
LOSS OF DIRECTIONAL CONTROL ON THE GROUND, DUE TO INTERMITTENT LOCKING OF THE RIGHT BRAKE DURING THE LANDING ROLL.
Full Narrative
THE AIRPLANE WAS BEING POSITIONED TO A LOCATION FOR AN AG OPERATION. WHILE LANDING ON A ROAD, THE RIGHT TIRE STARTED SKIDDING AND THE AIRPLANE RAN OFF THE RIGHT SIDE OF THE ROAD. IT CROSSED A SMALL DITCH, THEN A DRAINAGE CANAL, AND STOPPED ON THE OPPOSITE BANK OF THE CANAL. INSPECTION REVEALED THAT THE RIGHT BRAKE MASTER CYLINDER ACTUATOR ROD WAS SCORED AND HAD WEAR MARKS, AND THE BRAKE WOULD INTERMITTENTLY STICK, HOLDING PRESSURE ON THE RIGHT BRAKE. THE STICKING WAS CAUSED BY THE PARKING BRAKE LEVER HOLDING ONTO THE WEAR GROOVES.
Flight
Event TypeAccident
Event Time13:30 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrumman G-164A
Tail NumberN930X
Aircraft CategoryAir
DamageSubstantial
OperatorTell Ag Service
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-985 · Reciprocating · 450
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 41 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 6 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point66 F / 0 C
Altimeter29.00 inHg
Observation Time18:52
Weather SourceWFAC