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NTSB Report
July 29, 1984 · De Havilland DHC-7-100 · N9058P
Denver, CO
Overview
Report Status
Preliminary report
Event Type
Incident
Date
July 29, 1984
Injury Outcomes
No injuries (6 uninjured)
Location
Denver, CO
Aircraft
De Havilland DHC-7-100
Tail Number
N9058P
Operator
Rocky Mountain Airways
Injuries
None
Aircraft Damage
Minor
NTSB Number
DEN84IA241
THE LEFT MAIN LANDING GEAR WAS DISASSEMBLED & REASSEMBLED BY COMPANY MAINTENANCE PERSONNEL & THE ACFT WAS BEING FERRIED TO ANOTHER BASE FOR PERMANENT LANDING GEAR REPAIRS. DURING TAKEOFF, THE LEFT MAIN LANDING GEAR AND SHOCK STRUT SEPERATED FROM THE ACFT. THE PLT MADE AN EMERG LANDING WITHOUT THE LEFT MAIN GEAR WHEELS. AN EXAM OF THE GEAR REVEALED THAT THE UPPER BEARING HALVES & PISTON DAMPING RING WERE INSTALLED USING THE MAINTENANCE MANUAL. REVIEW OF THE MAINTENANCE MANUAL REVEALED THAT THE LANDING GEAR ASSEMBLY PROCEDURES WERE MISLEADING. THE MANUFACTURER ISSUED A TEMP REVISION TO THE MANUAL FOR LANDING GEAR ASSEMBLY.
Full Narrative
THE LEFT MAIN LANDING GEAR WAS DISASSEMBLED & REASSEMBLED BY COMPANY MAINTENANCE PERSONNEL & THE ACFT WAS BEING FERRIED TO ANOTHER BASE FOR PERMANENT LANDING GEAR REPAIRS. DURING TAKEOFF, THE LEFT MAIN LANDING GEAR AND SHOCK STRUT SEPERATED FROM THE ACFT. THE PLT MADE AN EMERG LANDING WITHOUT THE LEFT MAIN GEAR WHEELS. AN EXAM OF THE GEAR REVEALED THAT THE UPPER BEARING HALVES & PISTON DAMPING RING WERE INSTALLED USING THE MAINTENANCE MANUAL. REVIEW OF THE MAINTENANCE MANUAL REVEALED THAT THE LANDING GEAR ASSEMBLY PROCEDURES WERE MISLEADING. THE MANUFACTURER ISSUED A TEMP REVISION TO THE MANUAL FOR LANDING GEAR ASSEMBLY.
Flight
Event TypeIncident
Event Time03:58 MDT
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftDe Havilland DHC-7-100
Tail NumberN9058P
Aircraft CategoryAir
DamageMinor
OperatorRocky Mountain Airways
Operating RulePart 91
Engines4
Engine TypeTurboprop
Engine DetailsP&W · PT6-50 · Turboprop · 500
Seats59
People & Injuries
Injury SummaryNo injuries (6 uninjured)
Fatal0
Serious0
Minor0
Uninjured6
Total6
Crew 1Age 28 · First Class
Conditions
ConditionsVMC
LightDark Night
Wind280° @ 5 kt
Visibility20 sm
CeilingOvercast 25000 ft
Temperature / Dew Point64 F / 54
Altimeter30.00 inHg
Observation Time10:02
Weather SourceWFAC