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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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January 12, 1989 · De Havilland DHC-7-102 · N926RM

Gunnison, CO

Overview

Report Status
Probable Cause
Event Type
Incident
Date
January 12, 1989
Injury Outcomes
No injuries (51 uninjured)
Location
Gunnison, CO
Aircraft
De Havilland DHC-7-102
Tail Number
N926RM
Operator
Rocky Mountain Airways
Injuries
None
Aircraft Damage
Minor
NTSB Number
DEN89IA060

ROCKY MOUNTAIN AIRWAYS FLT 2276 WAS ON A SCHEDULED FLT FROM DENVER, CO TO GUNNISON, CO. DURING TOUCHDOWN AT GUNNISON, THE RIGHT LANDING GEAR PARTIALLY COLLAPSED. THE CAPT WAS ABLE TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL. HE TAXIED THE ACFT OFF THE RUNWAY ONTO THE ACFT PARKING APRON WHERE HE SHUT THE ENGINES DOWN AND THE PAX WERE DEPLANNED. SUBSEQUENT INVESTIGATION REVEALED THAT THE LOCK STRUT IN THE LANDING GEAR ASSEMBLY HAD FAILED DUE TO FATIGUE. A SERVICE BULLETIN REGARDING THE INSPECTION AND REPLACEMENT OF THIS PART HAD NOT BEEN COMPLIED WITH.

NTSB Probable Cause

THE FATIGUE FAILURE OF THE DOWN LOCK MECHANISM RESULTING FROM THE NON-COMPLIANCE WITH A SERVICE BULLETIN BY COMPANY MAINTENANCE PERSONNEL.

Full Narrative

ROCKY MOUNTAIN AIRWAYS FLT 2276 WAS ON A SCHEDULED FLT FROM DENVER, CO TO GUNNISON, CO. DURING TOUCHDOWN AT GUNNISON, THE RIGHT LANDING GEAR PARTIALLY COLLAPSED. THE CAPT WAS ABLE TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL. HE TAXIED THE ACFT OFF THE RUNWAY ONTO THE ACFT PARKING APRON WHERE HE SHUT THE ENGINES DOWN AND THE PAX WERE DEPLANNED. SUBSEQUENT INVESTIGATION REVEALED THAT THE LOCK STRUT IN THE LANDING GEAR ASSEMBLY HAD FAILED DUE TO FATIGUE. A SERVICE BULLETIN REGARDING THE INSPECTION AND REPLACEMENT OF THIS PART HAD NOT BEEN COMPLIED WITH.

Flight

Event TypeIncident
Event Time18:50 MST
Nearest AirportGUNNISON (0nm N)
Runway0
Runway Length7198 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftDe Havilland DHC-7-102
Tail NumberN926RM
Aircraft CategoryAir
DamageMinor
OperatorRocky Mountain Airways
Operating RulePart 121
Engines4
Engine TypeTurboprop
Engine DetailsP&W · PT6A-50 · Turboprop · 1120
Seats59

People & Injuries

Injury SummaryNo injuries (51 uninjured)
Fatal0
Serious0
Minor0
Uninjured51
Total51
Crew 1Age 47 · First Class

Conditions

ConditionsVMC
LightDark Night
WindCalm
Visibility10 sm
CeilingBroken clouds 3500 ft
Temperature / Dew Point7 C / 0 C
Altimeter30.00 inHg
Weather SourcePILO

Appendix: Source Data