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NTSB Report
June 23, 1991 · Swearingen SA227-TT · N13JV
Tupelo, MS
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 23, 1991
Injury Outcomes
No injuries (7 uninjured)
Location
Tupelo, MS
Aircraft
Swearingen SA227-TT
Tail Number
N13JV
Operator
David G Chase
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA91LA167
ACFT MADE SHARP RIGHT TURN AND DEPARTED RUNWAY WHEN NOSE STEERING WAS ACTIVATED DURING LANDING ROLLOUT. POST ACCIDENT INVESTIGATION REVEALED THE NOSE STEERING ACTUATOR HAD MALFUNCTIONED. THE UNIT'S ARMING VALVE WAS BACKED OUT AND NOT SECURED BY A REQUIRED SET SCREW. THE SEATS FOR THE VALVE WERE THE INCORRECT SEATS. THESE TWO FINDINGS CAUSED THE ACTUATOR TO HAVE INTERNAL LEAKAGE WHICH RESULTED IN FAILURE OF THE ACTUATOR. LOGBOOK RECORDS INDICATED THE ARMING VALVE WAS CHANGED BY A MECHANIC IN THE FIELD IN SEPTEMBER 1988, 401 FLT HOURS BEFORE THE ACCIDENT. IN APRIL 1989, FAIRCHILD AIRCRAFT ISSUED A SERVICE BULLETIN THAT REQUIRED THE ACTUATOR BE RETURNED TO THE MANUFACTURER FOR REPLACEMENT OF THE ARMING VALVE.
NTSB Probable Cause
THE IMPROPER INSTALLATION OF THE NOSE STEERING ACTUATOR ARMING VALVE BY A MECHANIC WHICH RESULTED IN FAILURE OF THE ACTUATOR AND ON GROUND LOSS OF DIRECTIONAL CONTROL BY THE PILOT DURING LANDING ROLLOUT.
Full Narrative
ACFT MADE SHARP RIGHT TURN AND DEPARTED RUNWAY WHEN NOSE STEERING WAS ACTIVATED DURING LANDING ROLLOUT. POST ACCIDENT INVESTIGATION REVEALED THE NOSE STEERING ACTUATOR HAD MALFUNCTIONED. THE UNIT'S ARMING VALVE WAS BACKED OUT AND NOT SECURED BY A REQUIRED SET SCREW. THE SEATS FOR THE VALVE WERE THE INCORRECT SEATS. THESE TWO FINDINGS CAUSED THE ACTUATOR TO HAVE INTERNAL LEAKAGE WHICH RESULTED IN FAILURE OF THE ACTUATOR. LOGBOOK RECORDS INDICATED THE ARMING VALVE WAS CHANGED BY A MECHANIC IN THE FIELD IN SEPTEMBER 1988, 401 FLT HOURS BEFORE THE ACCIDENT. IN APRIL 1989, FAIRCHILD AIRCRAFT ISSUED A SERVICE BULLETIN THAT REQUIRED THE ACTUATOR BE RETURNED TO THE MANUFACTURER FOR REPLACEMENT OF THE ARMING VALVE.
Flight
Event TypeAccident
Event Time17:22 CDT
Nearest AirportTupelo Municipal (0nm)
Runway18
Runway Length5499 ft
Runway Width100 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSwearingen SA227-TT
Tail NumberN13JV
Aircraft CategoryAir
DamageSubstantial
OperatorDavid G Chase
Operating RulePart 91
Engines2
Engine TypeTurboprop
Engine DetailsGarrett · TPE-331 · Turboprop · 940
Seats10
People & Injuries
Injury SummaryNo injuries (7 uninjured)
Fatal0
Serious0
Minor0
Uninjured7
Total7
Crew 1Age 60 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind320° @ 3 kt
Visibility7 sm
CeilingBroken clouds 3800 ft
Altimeter29.00 inHg
Observation Time22:22
Weather SourceWFAC