# NTSB investigations, CO: Airframe/component/system failure/malfunction NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 1 of 4 · 161 cases ## Latest cases - [NTSB DEN08LA028](https://openairdocs.org/ntsb/DEN08LA028.md): Piper PA-22-150 · Canon City, CO · Accident · No injuries · Limited investigation · Final report · Oct 29, 2007 · N2736P · Substantial damage > the failure of the landing gear hinge point attachment for undetermined reasons. - [NTSB DEN07CA086](https://openairdocs.org/ntsb/DEN07CA086.md): Cessna 170A · Watkins, CO · Accident · No injuries · Data collection · Final report · Apr 11, 2007 · N1258D · Substantial damage > A total failure during landing roll of the right brake caused by severely worn shoes, causing the caliper pins to engaged misaligned. A contributing factor was the pilot's inability to maintain directional control. - [NTSB DEN07IA066](https://openairdocs.org/ntsb/DEN07IA066.md): Diamond Aircraft Industries DA-20-C1 · Pueblo, CO · Incident · No injuries · Incident investigation · Final report · Mar 6, 2007 · N921DA · No damage > The failure of the horizontal stabilizer forward bracket bolts due to insufficent preload during factory installation. - [NTSB DEN07IA055](https://openairdocs.org/ntsb/DEN07IA055.md): Bombardier CL-600-2B19 · Cripple Creek, CO · Incident · No injuries · Incident investigation · Final report · Jan 25, 2007 · N17337 · Minor damage > A fatigue fracture, which resulted in the separation of the No.1 engine fan disk. Contributing factors in the accident were the operators' maintenance personnel lack of training to be able to detect arc-out damage on the fan disk, and the fan disk… - [NTSB DEN07IA048](https://openairdocs.org/ntsb/DEN07IA048.md): Raytheon B300 · Englewood, CO · Incident · No injuries · Incident investigation · Final report · Jan 8, 2007 · N945SH · Minor damage > This case was modified 10/30/2007 Failure of the nose landing gear upper torque knee due to overstress, and the pilot's inability to maintain aircraft control. - [NTSB DEN07CA046](https://openairdocs.org/ntsb/DEN07CA046.md): Piper PA-34-200T · Walden, CO · Accident · No injuries · Data collection · Final report · Jan 1, 2007 · N821GS · Substantial damage > The pilot experiencing lateral flight control stiffness for undetermined reasons and the pilot's intentional wheels up landing. Factors were the snow covered and rough/uneven terrain. - [NTSB DEN07CA039](https://openairdocs.org/ntsb/DEN07CA039.md): Cessna T210M · Broomfield, CO · Accident · No injuries · Data collection · Final report · Dec 25, 2006 · N6051N · Substantial damage > the failure of the mechanic to comply with the required replacement schedule resulting in the failure of the hydraulic line and the resulting gear up landing. - [NTSB DEN07FA008](https://openairdocs.org/ntsb/DEN07FA008.md): McDonnell Douglas MD-90-30 · Denver, CO · Accident · No injuries · Field investigation · Final report · Oct 12, 2006 · N906DA · Substantial damage > A fractured nose gear assembly spray deflector that blocked the nose gear from extending during landing, and resulted in an intentional nose gear up landing. - [NTSB DEN06IA083](https://openairdocs.org/ntsb/DEN06IA083.md): McDonnell Douglas MD-90-30 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Jun 10, 2006 · N907DA · Minor damage > a brake fire for reasons undetermined. A contributing factor was the inadequate inspection by the maintenance crew. - [NTSB DEN06IA056](https://openairdocs.org/ntsb/DEN06IA056.md): Swearingen SA226TC · Denver, CO · Incident · No injuries · Incident investigation · Final report · Apr 5, 2006 · N770S · No damage > the failure of the elevator down cable due to an improperly routed cable by unknown maintenance personnel. A contributing factor was the improper inspection of the elevator cable by the operator's maintenance personnel. - [NTSB DEN06LA044](https://openairdocs.org/ntsb/DEN06LA044.md): Piper PA-28RT-201T · Parker, CO · Accident · No injuries · Limited investigation · Final report · Feb 25, 2006 · N2939V · Substantial damage > the improper maintenance procedures resulting in the unseating of the number two main bearing. Contributing factors include the mechanic's improper troubleshooting procedures, and the pilot's improper decision to continue operating the airplane with known… - [NTSB DEN06LA041](https://openairdocs.org/ntsb/DEN06LA041.md): Piper PA-30 · Greeley, CO · Accident · Minor injuries · Limited investigation · Final report · Feb 17, 2006 · N7743Y · Substantial damage > the pilot's flight into adverse weather conditions, the airframe ice, and the wheels up landing. Factors contributing to the accident were the icing conditions, the frozen landing gear, the frozen alternate gear extension system, and the runway sign. - [NTSB DEN06LA015](https://openairdocs.org/ntsb/DEN06LA015.md): Cessna 182 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Nov 12, 2005 · N5715B · Substantial damage > the nose wheel assembly separation for reasons undetermined. - [NTSB DEN05LA150](https://openairdocs.org/ntsb/DEN05LA150.md): Bellanca 7GCBC · Longmont, CO · Accident · No injuries · Limited investigation · Final report · Sep 30, 2005 · N113AW · Substantial damage > the failure of the left rudder cable resulting in a loss of directional control by the pilot. Contributing to the accident was the improper repair procedures on the seat frame. - [NTSB DEN05LA077](https://openairdocs.org/ntsb/DEN05LA077.md): McDonnell Douglas MD-88 · Denver, CO · Accident · No injuries · Limited investigation · Final report · May 14, 2005 · N949DL · Substantial damage > the failure of the nose gear actuator resulted in penetration of the forward pressure bulkhead and a loss of pressurization. - [NTSB DEN05TA072](https://openairdocs.org/ntsb/DEN05TA072.md): Bell OH-58C · Colorado Sprngs, CO · Accident · No injuries · Final report · Apr 8, 2005 · N198PD · Substantial damage > the failure of the N1 tachometer generator which resulted in a precautionary landing. Contributing factors include the frayed wire and the unsuitable terrain for a precautionary landing. - [NTSB DEN05LA043](https://openairdocs.org/ntsb/DEN05LA043.md): Mooney M20E · Telluride, CO · Accident · No injuries · Limited investigation · Final report · Dec 23, 2004 · N5550Q · Substantial damage > the pilot's improper in-flight decision making and inadvertent retraction of the landing gear resulting in a wheels up landing. A contributing factor included the pilot's attention being diverted by the seized engine tachometer. - [NTSB DEN05LA030](https://openairdocs.org/ntsb/DEN05LA030.md): Gulfstream Aerospace G-IV · Eagle, CO · Accident · No injuries · Limited investigation · Final report · Nov 29, 2004 · N420QS · Substantial damage > nose wheel steering system failure due to foreign material substance contamination. - [NTSB DEN04LA138](https://openairdocs.org/ntsb/DEN04LA138.md): Gates Learjet 25B · Colorado Spring, CO · Accident · No injuries · Limited investigation · Final report · Sep 4, 2004 · N47MR · Substantial damage > right main tire failure for reasons undetermined. - [NTSB DEN04LA129](https://openairdocs.org/ntsb/DEN04LA129.md): Piper PA-24-250 · Sterling, CO · Accident · No injuries · Limited investigation · Final report · Aug 22, 2004 · N5975P · Destroyed > the failure of the landing gear extension system for undetermined reasons. - [NTSB DEN04CA122](https://openairdocs.org/ntsb/DEN04CA122.md): Eurocopter France EC-130 B4 · Englewood, CO · Accident · No injuries · Data collection · Final report · Aug 9, 2004 · N910U · Substantial damage > the pilot's failure to perform a preflight inspection. Contributing to the accident was the transmission cowling that disconnected during the landing. - [NTSB DEN04LA082](https://openairdocs.org/ntsb/DEN04LA082.md): Lockheed TV-2 · Calhan, CO · Accident · No injuries · Limited investigation · Final report · May 29, 2004 · N6617 · Substantial damage > the failure of the fuel tank float which resulted in the draining of fuel out the vents, and a low fuel supply. Contributing factors include the insufficient runway length, the ditch, and the rough, uneven terrain. - [NTSB DEN04LA075](https://openairdocs.org/ntsb/DEN04LA075.md): Beech 95-C55 · Rifle, CO · Accident · No injuries · Limited investigation · Final report · Apr 28, 2004 · N282JL · Substantial damage > the pilot's failure to verify the manual extension of the landing gear resulting in an inadvertent wheels up landing. Contributing factors include the electrical systems failure for undetermined reasons, the pilot's diverted attention and the pilot's improper… - [NTSB DEN04IA063](https://openairdocs.org/ntsb/DEN04IA063.md): Canadair CL-600-2B19 · Colorado Spring, CO · Incident · No injuries · Incident investigation · Final report · Apr 17, 2004 · N17231 · Minor damage > The failed air conditioning fan by-pass check valve and the subsequent overtemperature of the air conditioning pack. - [NTSB DEN04IA060](https://openairdocs.org/ntsb/DEN04IA060.md): Canadair CL-600-2C10 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Apr 11, 2004 · N609QX · No damage > The total failure of the airplane's number 1 system hydraulic pump. - [NTSB DEN04IA059](https://openairdocs.org/ntsb/DEN04IA059.md): Beech 1900D · Denver, CO · Incident · No injuries · Incident investigation · Final report · Apr 9, 2004 · N210GL · No damage > arcing of the windshield deicing system. Factors contributing to the incident were the improper inspection of the windshield's exterior seal, deterioration of the windshield seal, and water penetration through the deteriorated seal. - [NTSB DEN04FA041](https://openairdocs.org/ntsb/DEN04FA041.md): Dassault DA-20 Falcon Jet · Pueblo, CO · Accident · No injuries · Field investigation · Final report · Jan 21, 2004 · N200JE · Substantial damage > the pilot's improper in-flight planning/decision to land on the contaminated runway, the stuck thrust reverser solenoid resulting in partial deployment of the right engine thrust reverser, and the pilot's inability to maintain directional control of the… - [NTSB DEN04IA026](https://openairdocs.org/ntsb/DEN04IA026.md): Boeing 737-3M8 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Nov 29, 2003 · N303FL · No damage > The restricted movement of the flight control yoke and tiller wheel steering for reasons undetermined. - [NTSB DEN04IA014](https://openairdocs.org/ntsb/DEN04IA014.md): Learjet 45 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Oct 22, 2003 · N420FX · No damage > the failure of the airplane's spoiler system when used as speed brakes due to high resistances in the spoilers' actuator coils. - [NTSB DEN04IA012](https://openairdocs.org/ntsb/DEN04IA012.md): McDonnell Douglas DC-10-10 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Oct 12, 2003 · N375FE · Minor damage > the manufacturer's improper installation of the inboard slat drive mechanism's lower left hand anti-torque strut, which resulted in the axial migration of the rod-end bearing, the binding of the anti-torque strut, and the subsequent activation of the slat… - [NTSB DEN03LA144](https://openairdocs.org/ntsb/DEN03LA144.md): Luscombe 8E · Longmont, CO · Accident · No injuries · Limited investigation · Final report · Aug 16, 2003 · N1614K · Substantial damage > Separation of the landing gear tire valve stem resulting in the left main tire deflating, and the pilot's inability to maintain aircraft control. - [NTSB DEN03LA132](https://openairdocs.org/ntsb/DEN03LA132.md): Cessna 172P · Watkins, CO · Accident · No injuries · Limited investigation · Final report · Jul 17, 2003 · N98969 · Substantial damage > the right seat shifting aft during the take off roll, rendering aircraft control not possible by the flight instructor. Contributing factors include the inboard seat pin which did not engage fully, the outboard seat pin which was installed incorrectly, the… - [NTSB DEN03FA113](https://openairdocs.org/ntsb/DEN03FA113.md): Mattison Starduster Too · Ellicott, CO · Accident · 1 fatal · Field investigation · Final report · Jun 28, 2003 · N80T · Destroyed > the pilot's improper in-flight planning/decision to perform aerobatics at low altitude and the failed welds at the elevator horn and torque tube. Factors contributing to the accident were the pilot performing aerobatics at low altitude, his inability to… - [NTSB DEN03LA076](https://openairdocs.org/ntsb/DEN03LA076.md): Swearingen SA226TC · Denver, CO · Accident · No injuries · Limited investigation · Final report · Apr 16, 2003 · N229AM · Substantial damage > The failure of the landing gear system and the flight crew's failure to ascertain that the landing gear was down and locked. A contributing factor was the inadequate maintenance inspections performed by maintenance personnel. - [NTSB DEN03IA032](https://openairdocs.org/ntsb/DEN03IA032.md): Hawker Siddeley HS-125-700A · Telluride, CO · Incident · No injuries · Incident investigation · Final report · Jan 4, 2003 · N270KA · Minor damage > the overheated and burned venturi fan motor. - [NTSB DEN03LA016](https://openairdocs.org/ntsb/DEN03LA016.md): North American T-6G · Elbert, CO · Accident · No injuries · Limited investigation · Final report · Nov 17, 2002 · N7197C · Substantial damage > overload failure of the cable between the left rudder pedal and the tail wheel, rendering directional control impossible and resulting in an inadvertent ground loop and nose over. Contributing factors were the crosswind and the soft, wet ground. - [NTSB DEN03LA014](https://openairdocs.org/ntsb/DEN03LA014.md): Piper PA-28RT · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Nov 6, 2002 · N2904C · Substantial damage > the collapse of the left main landing gear during landing roll resulting in loss of control/ground loop/swerve and subsequent impact with a sign. Contributing factors include, the airplane's total loss of electrical power due to an alternator failure and the… - [NTSB DEN03LA010](https://openairdocs.org/ntsb/DEN03LA010.md): Hildebrandt Rutan/Defiant · Watkins, CO · Accident · No injuries · Limited investigation · Final report · Oct 19, 2002 · N219DF · Substantial damage > the pilot's failure to use the checklist, resulting in his forgetting to lower the nose landing gear. Contributing factors included the pilot's attention being diverted by the loss of oil pressure on the rear engine due to a broken oil pressure sensor line,… - [NTSB DEN02LA107](https://openairdocs.org/ntsb/DEN02LA107.md): Cessna 195 · Longmont, CO · Accident · No injuries · Limited investigation · Final report · Sep 7, 2002 · N4381V · Substantial damage > separation of the tail wheel cables, resulting in a loss of directional control. - [NTSB DEN02LA098](https://openairdocs.org/ntsb/DEN02LA098.md): Schweizer 269C · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Aug 20, 2002 · N7508L · Substantial damage > maintenance personnel's failure to secure the landing skid oleo strut bolt during the last 50-hour inspection, causing the left rear skid to collapse and the tail rotor to strike the ground. - [NTSB DEN02TA092](https://openairdocs.org/ntsb/DEN02TA092.md): Air Tractor AT-802A · Broomfield, CO · Accident · Minor injuries · Final report · Aug 14, 2002 · N91092 · Substantial damage > the airplane's left main landing gear tire separated from its wheel during takeoff roll for an undetermined reason. Contributing factors were the pilot's inability to maintain aircraft control during takeoff roll and the subsequent impact with the Visual… - [NTSB DEN02LA081](https://openairdocs.org/ntsb/DEN02LA081.md): Grumman G-164A · Two Buttes, CO · Accident · No injuries · Limited investigation · Final report · Jul 24, 2002 · N5416 · Substantial damage > the failure of the right main landing wheel master brake cylinder and the subsequent inadvertent ground loop during the landing roll by the pilot. - [NTSB DEN02GA074](https://openairdocs.org/ntsb/DEN02GA074.md): Consolidated-Vultee P4Y-2 · Estes Park, CO · Accident · 2 fatal · Final report · Jul 19, 2002 · N7620C · Destroyed > the inflight failure of the left wing due to fatigue cracking in the left wing's forward spar and wing skin. A factor contributing to the accident was inadequate maintenance procedures to detect fatigue cracking. - [NTSB DEN02LA020](https://openairdocs.org/ntsb/DEN02LA020.md): Maule M-5-235C · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Jan 13, 2002 · N382X · Substantial damage > the failure of the tail wheel left steering cable. A contributing factor was the pilot's loss of aircraft control (not possible) and the subsequent inadvertent ground loop. - [NTSB DEN01FA157](https://openairdocs.org/ntsb/DEN01FA157.md): Boeing 777-236 · Denver, CO · Accident · 1 fatal · Field investigation · Final report · Sep 5, 2001 · G-VIIK · Substantial damage > the overstress fracture of the airplane's refueling adapter ring that resulted from the abnormal angular force applied to it. The applied angular force occurred due to the ground refueler inadequately positioning the hydrant fuel truck (in relation to the… - [NTSB DEN01LA132](https://openairdocs.org/ntsb/DEN01LA132.md): Piper PA-31-350 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Jul 29, 2001 · N114SA · Substantial damage > the failure of the nose landing gear right drag brace (link assembly) due to fatigue. - [NTSB DEN01LA119](https://openairdocs.org/ntsb/DEN01LA119.md): Cessna 177RG · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Jul 1, 2001 · N2129Q · Substantial damage > failure of the nose landing gear hydraulic UP hose, which resulted in a wheels-up landing.. - [NTSB DEN01IA108](https://openairdocs.org/ntsb/DEN01IA108.md): Beech 200 · Greeley, CO · Incident · No injuries · Incident investigation · Final report · May 8, 2001 · N725MC · Minor damage > jamming of the nose landing gear actuator due to improper painting procedures by other maintenance personnel which resulted in a wheels up landing. - [NTSB DEN01LA089](https://openairdocs.org/ntsb/DEN01LA089.md): Cessna 140A · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Apr 25, 2001 · N666TC · Substantial damage > total failure of the right main landing gear spring due to fatigue. - [NTSB DEN01LA062](https://openairdocs.org/ntsb/DEN01LA062.md): Piper PA-34-220T · Durango, CO · Accident · No injuries · Limited investigation · Final report · Mar 3, 2001 · N8356X · Substantial damage > the pilot's failure to maintain directional control. A contributing factor was the blown tire. Next page: https://openairdocs.org/ntsb.md?state=CO&occurrence=130&page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."eventStateOrRegion" = 'CO' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?occurrence=130&state=CO --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.