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NTSB Report
March 9, 1985 · Fairchild SA-227AC · N3115U
Hailey, ID
Overview
Report Status
Preliminary report
Event Type
Accident
Date
March 9, 1985
Injury Outcomes
No injuries (20 uninjured)
Location
Hailey, ID
Aircraft
Fairchild SA-227AC
Tail Number
N3115U
Operator
Horizon Airlines
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA85LA070
ON LDG THE EXPERIENCED CAPTN ENCOUNTERED A RIGHT DRIFT ON THE DRY RWY WITH NEGLIGIBLE WINDS. RUDDER/PWR/NOSEWHEEL STEERING INPUTS WERE INSUFFICIENT TO REGAIN DIRECTIONAL CONTROL. RIGHT DRIFT TRANSLATED INTO A STRONG RIGHT SWERVE WITH CONTINUED APPLICATION OF FULL LEFT NOSEWHEEL STEERING AND SIMULTANEOUS BRAKING. ACFT DEPARTED RIGHT SIDE OF RWY AND NOSEWHEEL OBSERVED TRACKING STRAIGHT INTO SNOW & NO NOSEWHEEL SKID MARKS OBSERVED. TESTING REVEALED REDUCED NOSEWHEEL STEERING EFFECTIVENESS WITH DECREASING NOSE STRUT COMPRESSION DUE TO ENGAGEMENT OF CENTERING CAM. CAPTN REPORTED 'NOSE HIGH' TAXI ATTITUDE AND 'PITCH SENSITIVE' FLT. CAPTN/OTHER PLTS REPORTED DIFFICULTY ACHIEVING EQUAL BRAKING DURING CONDITIONS OF LARGE RUDDER PEDAL DISPLACEMENT. THIS CONDITION IS NOT ADDRESSED IN PLT/OPS MANUALS. CHECK OF BRAKE/NOSEWHEEL STEERING SYSTEMS REVEALED NO MECHANICAL MALFUNCTION.
Full Narrative
ON LDG THE EXPERIENCED CAPTN ENCOUNTERED A RIGHT DRIFT ON THE DRY RWY WITH NEGLIGIBLE WINDS. RUDDER/PWR/NOSEWHEEL STEERING INPUTS WERE INSUFFICIENT TO REGAIN DIRECTIONAL CONTROL. RIGHT DRIFT TRANSLATED INTO A STRONG RIGHT SWERVE WITH CONTINUED APPLICATION OF FULL LEFT NOSEWHEEL STEERING AND SIMULTANEOUS BRAKING. ACFT DEPARTED RIGHT SIDE OF RWY AND NOSEWHEEL OBSERVED TRACKING STRAIGHT INTO SNOW & NO NOSEWHEEL SKID MARKS OBSERVED. TESTING REVEALED REDUCED NOSEWHEEL STEERING EFFECTIVENESS WITH DECREASING NOSE STRUT COMPRESSION DUE TO ENGAGEMENT OF CENTERING CAM. CAPTN REPORTED 'NOSE HIGH' TAXI ATTITUDE AND 'PITCH SENSITIVE' FLT. CAPTN/OTHER PLTS REPORTED DIFFICULTY ACHIEVING EQUAL BRAKING DURING CONDITIONS OF LARGE RUDDER PEDAL DISPLACEMENT. THIS CONDITION IS NOT ADDRESSED IN PLT/OPS MANUALS. CHECK OF BRAKE/NOSEWHEEL STEERING SYSTEMS REVEALED NO MECHANICAL MALFUNCTION.
Flight
Event TypeAccident
Event Time18:43 MST
Nearest AirportFriedman Memorial (0nm N)
Runway31
Runway Length6600 ft
Runway Width100 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftFairchild SA-227AC
Tail NumberN3115U
Aircraft CategoryAir
DamageSubstantial
OperatorHorizon Airlines
Operating RulePart 135
Engines2
Engine TypeTurboprop
Engine DetailsGarrett · TPE33111U611G · Turboprop · 1000
Seats20
People & Injuries
Injury SummaryNo injuries (20 uninjured)
Fatal0
Serious0
Minor0
Uninjured20
Total20
Crew 1Age 33 · First Class
Conditions
ConditionsVMC
LightDusk
Wind300° @ 5 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point28 C / 0 C
Altimeter30.00 inHg
Observation Time02:17
Weather SourceWFAC