# NTSB investigations: 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 22 of 79 · 3,929 cases ## Cases, newest first - [NTSB MIA99FA267](https://openairdocs.org/ntsb/MIA99FA267.md): Learjet 24 · Gainesville, GA · Accident · Serious injuries · Field investigation · Final report · Sep 26, 1999 · N224SC · Substantial damage > The inadequate inspection of the main landing gear brake assemblies, which lead to operation of the aircraft with worn brakes that failed during the landing roll. Contributing factors were the descending terrain, roadway and ditch. - [NTSB LAX99FA317](https://openairdocs.org/ntsb/LAX99FA317.md): Kaman HH-43F · Phoenix, AZ · Accident · 2 fatal · Field investigation · Final report · Sep 25, 1999 · N100PL · Destroyed > Failure of the horizontal stabilizer left outboard forward attach point because of a previously existing crack that resulted from inadequate maintenance inspection by the operator. A factor was the use of automotive parts. - [NTSB FTW99FA265](https://openairdocs.org/ntsb/FTW99FA265.md): Carter Spacewalker II · Conroe, TX · Accident · 2 fatal · Field investigation · Final report · Sep 25, 1999 · N235FC · Destroyed > The in-flight separation of the left wing due to the failure of the wing spars resulting from the builder's improper design change utilizing basswood for the spars instead of the specified spruce. - [NTSB MIA99LA270](https://openairdocs.org/ntsb/MIA99LA270.md): Cessna 172RG · Orlando, FL · Accident · No injuries · Limited investigation · Final report · Sep 24, 1999 · N9536B · Substantial damage > the pilot's failure to ensure that the landing gear was down and locked following loss of electrical power for undetermined reasons, resulting in substantial damage to the airplane when the right main landing gear collapsed upon landing. - [NTSB ANC99LA152](https://openairdocs.org/ntsb/ANC99LA152.md): Maule ML-4 · Anchorage, AK · Accident · Minor injuries · Limited investigation · Final report · Sep 24, 1999 · N4623T · Substantial damage > The improper (reversed) connection of the elevator control cables by the owner/pilot-mechanic, and the failure to have the installation inspected by another mechanic. - [NTSB SEA99LA171](https://openairdocs.org/ntsb/SEA99LA171.md): Garlick UH-1H · Usk, WA · Accident · No injuries · Limited investigation · Final report · Sep 21, 1999 · N32800 · Substantial damage > Fatigue failure of the 90-degree gearbox attachment studs, resulting in separation of the tailrotor and 90-degree gearbox from the vertical fin. - [NTSB IAD99LA068](https://openairdocs.org/ntsb/IAD99LA068.md): Cessna 172P · Friendly, MD · Accident · No injuries · Limited investigation · Final report · Sep 21, 1999 · N63325 · Substantial damage > The pilot's misjudgment of speed during the landing approach. The inoperative airspeed indicator was a contributing factor. - [NTSB LAX99FA315](https://openairdocs.org/ntsb/LAX99FA315.md): Boeing 757-2S7 · Agua Caliente, AZ · Accident · Serious injuries · Field investigation · Final report · Sep 20, 1999 · N904AW · No damage > the systemic failure of the airline's maintenance department to identify and correct the long standing history of intermittent faults, nuisance warnings, and erratic behavior in this airplane's GPWS system. Also causal is the airline's failure to perform the… - [NTSB LAX99FA311](https://openairdocs.org/ntsb/LAX99FA311.md): No American/Rogers B L P-51R · Reno, NV · Accident · 1 fatal · Field investigation · Final report · Sep 18, 1999 · N57LR · Destroyed > The onset of a flutter event and the resultant separation of the rudder and empennage from the aircraft. The precipitating cause for the flutter could not be determined. - [NTSB ANC99LA145](https://openairdocs.org/ntsb/ANC99LA145.md): Cessna 185F · Delta Junction, AK · Accident · Minor injuries · Limited investigation · Final report · Sep 15, 1999 · N85LC · Substantial damage > Corrosion and a fatigue failure of the lower end of the landing gear strut. Factors in the accident were the manufacturer's and the FAA's insufficient standards/requirements for life limits and inspection procedures. - [NTSB FTW99LA267](https://openairdocs.org/ntsb/FTW99LA267.md): Aeronca 11AC · Van Horn, TX · Accident · No injuries · Limited investigation · Final report · Sep 9, 1999 · N9044E · Substantial damage > A restriction within the auxiliary fuel supply system and the rough terrain during the subsequent precautionary landing resulting on main gear collapse. - [NTSB MIA99LA265](https://openairdocs.org/ntsb/MIA99LA265.md): Piper PA-24-250 · Naples, FL · Accident · No injuries · Limited investigation · Final report · Sep 8, 1999 · N980AC · Substantial damage > The pilot's failure to perform manual gear extension procedures with a suspected unsafe landing gear indication which resulted in a collapse of the main landing gear on landing rollout. A factor in the accident was the pilot's lack of total experience in kind… - [NTSB ATL99LA124](https://openairdocs.org/ntsb/ATL99LA124.md): Cessna 190 · Enterprise, AL · Accident · No injuries · Limited investigation · Final report · Sep 5, 1999 · N9872A · Substantial damage > The fatigue failure of the main landing gear spring. - [NTSB MIA99LA242](https://openairdocs.org/ntsb/MIA99LA242.md): Sukhoi SU-29 · Fort Lauderdale, FL · Accident · Serious injuries · Limited investigation · Final report · Sep 1, 1999 · N52PB · Destroyed > an in-flight failure of the right aileron due to fatigue cracking in the attachment structure of the right inboard aerodynamic compensator, which resulted in a loss of control, a forced landing, and subsequent impact with the ground. - [NTSB LAX99LA283](https://openairdocs.org/ntsb/LAX99LA283.md): Bell UH-1B · Lost Hills, CA · Accident · No injuries · Limited investigation · Final report · Aug 25, 1999 · N999SJ · Substantial damage > Failure and separation of the 90-degree gearbox as a result of the disengagement of the pinion and gear teeth. The cause(s) of the pinion and gear disengagement were undetermined. - [NTSB IAD99IA059](https://openairdocs.org/ntsb/IAD99IA059.md): Boeing 727-200 · Washington, DC · Incident · No injuries · Incident investigation · Final report · Aug 23, 1999 · N926TS · Minor damage > The inadequate lubrication of the landing gear side strut assembly by company maintenance personnel. A factor in the accident was the inadequate design of the assembly that trapped water and prevented adequate lubrication. - [NTSB MIA99LA233](https://openairdocs.org/ntsb/MIA99LA233.md): Cessna 172RG · Miami, FL · Accident · No injuries · Limited investigation · Final report · Aug 21, 1999 · N6231V · Substantial damage > The delay by the pilot-in-command to extend the gear resulting in collapse of the main landing gear after touchdown. Factors in the accident were the inoperative gear warning system associated with the throttle due to the broken wire at the throttle… - [NTSB LAX99FA272](https://openairdocs.org/ntsb/LAX99FA272.md): Beech BH 125-600A · Las Vegas, NV · Accident · No injuries · Field investigation · Final report · Aug 18, 1999 · N454DP · Substantial damage > the complete failure of all hydraulic systems due to the effects of a main gear tire disintegration on takeoff. Also causal was the manufacturer's inadequate design of the wheel wells, which did not comply with applicable certification regulations, and the… - [NTSB LAX99LA271](https://openairdocs.org/ntsb/LAX99LA271.md): Cessna TU 206G · Clear Lake, CA · Accident · No injuries · Limited investigation · Final report · Aug 17, 1999 · N206RR · Substantial damage > The fracture and separation of the front left pontoon attach point due to corrosion. The inability of the area to be inspected was a factor in the accident. - [NTSB SEA99LA143](https://openairdocs.org/ntsb/SEA99LA143.md): Cessna 210B · Port Angeles, WA · Accident · No injuries · Limited investigation · Final report · Aug 14, 1999 · N9588X · Substantial damage > The failure of maintenance personnel to detect cracked main landing gear saddles during required inspection, and subsequent fatigue fracture of the left main landing gear saddle resulting in separation of the saddle and disabling of the left main gear. - [NTSB FTW99LA228](https://openairdocs.org/ntsb/FTW99LA228.md): Aviat S1-11B · Katy, TX · Accident · No injuries · Limited investigation · Final report · Aug 14, 1999 · N540DM · Substantial damage > The pilot's inability to maintain directional control of the tailwheel equipped biplane following the failure of the left brake master cylinder. - [NTSB NYC99LA200](https://openairdocs.org/ntsb/NYC99LA200.md): Cessna 208 · Hillsborough, NH · Accident · Minor injuries · Limited investigation · Final report · Aug 13, 1999 · N193GE · Destroyed > an inadequate auxiliary fuel tank installation which resulted in a leak of undetermined origin. - [NTSB DEN99LA144](https://openairdocs.org/ntsb/DEN99LA144.md): Coleman Lancair IV P · Aspen, CO · Accident · No injuries · Limited investigation · Final report · Aug 12, 1999 · N124KM · Substantial damage > A failure of the right landing gear's brake system. Factors were the improper touchdown point attained by the pilot, the existing weather conditions that included a tailwind and high density altitude, and the rocky ditch. - [NTSB DEN99IA154](https://openairdocs.org/ntsb/DEN99IA154.md): Balloon Works Firefly 9 · Hartsel, CO · Incident · No injuries · Incident investigation · Final report · Aug 11, 1999 · N2570E · Minor damage > Total failure of the deflation line due to heat damage (as evidenced by glazing), most likely caused by the improper use of the flight controls (burner system) by person(s) unknown. - [NTSB MIA99LA220](https://openairdocs.org/ntsb/MIA99LA220.md): McDonnell Douglas DC-10-10F · Memphis, TN · Accident · No injuries · Limited investigation · Final report · Aug 7, 1999 · N68058 · Substantial damage > The inadequate design by the airplane manufacturer for using bolts to secure the inboard trailing edge flap that are susceptible to stress corrosion cracking. Also, the stress corrosion cracking failure of the four H-11 bolts that secure the left inboard… - [NTSB MIA99LA210](https://openairdocs.org/ntsb/MIA99LA210.md): Wilderoder Great Lakes 2TIA · Pensacola, FL · Accident · No injuries · Limited investigation · Final report · Jul 31, 1999 · N47149 · Substantial damage > The pilot's failure to check the brake hydraulic fluid reservoir prior to flight resulting in a low fluid level going undetected and failure of the brakes during landing rollout, which resulted in the aircraft overrunning the runway, colliding with a fence,… - [NTSB MIA99TA206](https://openairdocs.org/ntsb/MIA99TA206.md): Hughes OH-6A · Aguadilla, PR · Accident · No injuries · Final report · Jul 29, 1999 · N66377 · Substantial damage > An unidentified foreign object passing through the oil cooler blower assembly resulting in fracture and seizure of the oil cooler blower, and slowing of the main transmission and main rotor, which resulted in the pilot being unable to arrest the descent… - [NTSB FTW99LA204](https://openairdocs.org/ntsb/FTW99LA204.md): Air Tractor AT-301 · Victoria, TX · Accident · No injuries · Limited investigation · Final report · Jul 26, 1999 · N4393S · Substantial damage > The separation of the engine cowling due to a fractured support bracket, which resulted in the cowling striking and bending four engine push rods causing a loss of engine power. A factor was the lack of suitable terrain for the forced landing. - [NTSB DEN99LA129](https://openairdocs.org/ntsb/DEN99LA129.md): Boeing A-75-N1 (Stearman) · Tooele, UT · Accident · No injuries · Limited investigation · Final report · Jul 26, 1999 · N56772 · Substantial damage > The failure of the right main landing gear tire's inner tube, and the subsequent inadvertent ground loop by the pilot. - [NTSB CHI99LA261](https://openairdocs.org/ntsb/CHI99LA261.md): Hodre-Buull-Kolb Mark III · Plymouth, MN · Accident · Serious injuries · Limited investigation · Final report · Jul 21, 1999 · N93JL · Destroyed > The failure of the airplane's rudder control pulley due to corrosion and inadequate maintenance inspection of the airplane by the owner/pilot mechanic of the airplane. - [NTSB ATL99LA115](https://openairdocs.org/ntsb/ATL99LA115.md): Beech 55 · Nashville, TN · Accident · No injuries · Limited investigation · Final report · Jul 20, 1999 · N56AW · Substantial damage > The total failure of the nose gear extension and retraction assembly that resulted in the collapse of the nose gear during landing. - [NTSB CHI99LA243](https://openairdocs.org/ntsb/CHI99LA243.md): Mooney M20F · Marshall, MN · Accident · Minor injuries · Limited investigation · Final report · Jul 19, 1999 · N7141V · Substantial damage > the inadvertent stall and the checklist not followed by the pilot. Contributing factors were the baggage door not secured and the precautionary landing attempt by the pilot. - [NTSB DEN00LA033](https://openairdocs.org/ntsb/DEN00LA033.md): Cessna T210M · Cedar City, UT · Accident · No injuries · Limited investigation · Final report · Jul 16, 1999 · N6029N · Substantial damage > The pilot's failure to follow alternate landing gear extension procedures. Factors were the main landing gear failure to extend and a loss of electrical power. - [NTSB NYC99IA175](https://openairdocs.org/ntsb/NYC99IA175.md): Piper PA-46-310P · Belmar, NJ · Incident · No injuries · Incident investigation · Final report · Jul 15, 1999 · N121GP · Minor damage > The failure of the turbocharger clamp, resulting from improper welding settings during manufacture. - [NTSB ATL99LA107](https://openairdocs.org/ntsb/ATL99LA107.md): Continental Copters Tomcat MK5A · Camden, AL · Accident · Minor injuries · Limited investigation · Final report · Jul 14, 1999 · N9086T · Substantial damage > The failure of the cyclic control rod due to an overstress separation resulting from a material defect (inadequate quality of material) by the manufacturer. - [NTSB CHI99LA241](https://openairdocs.org/ntsb/CHI99LA241.md): Taylorcraft BC12-D · Aitkin, MN · Accident · No injuries · Limited investigation · Final report · Jul 13, 1999 · N96884 · Substantial damage > the right spring in the tailwheel assembly's separation. Factors were the fatigue in the landing gear, the maintenance personnel not identifying the fatigue during the annual inspection, and the right main gear's separation. - [NTSB SEA99LA131](https://openairdocs.org/ntsb/SEA99LA131.md): Piper PA-23-250 · Snohomish, WA · Accident · No injuries · Limited investigation · Final report · Jul 12, 1999 · N65PR · Substantial damage > Brake system failure due to the presence of air bubbles in the hydraulic fluid. - [NTSB MIA99LA195](https://openairdocs.org/ntsb/MIA99LA195.md): Ryan ST3KR · Lake City, FL · Accident · No injuries · Limited investigation · Final report · Jul 10, 1999 · N47306 · Substantial damage > the improper maintenance and inspection of the propeller system, which resulted in loose and improperly torqued bolts, causing the subsequent failure of a propeller blade. - [NTSB MIA99LA194](https://openairdocs.org/ntsb/MIA99LA194.md): Cessna 177RG · Jasper, AL · Accident · Minor injuries · Limited investigation · Final report · Jul 10, 1999 · N2619V · Substantial damage > the pilot inadvertently became disoriented and misjudged his position on the runway/airport, which resulted in him turning the airplane too soon, and subsequently impacting with a tree. Factors in this accident were a loss of electrical power for undetermined… - [NTSB NYC99LA151](https://openairdocs.org/ntsb/NYC99LA151.md): Learjet 60 · Hyannis, MA · Accident · No injuries · Limited investigation · Final report · Jul 2, 1999 · N219FX · Substantial damage > The flightcrew's inadequate coordination and their failure to utilize checklists. Also causal was the captain's improper decision to continue the approach to a runway with insufficient length. A factor in the accident was the improper maintenance. - [NTSB SEA99LA103](https://openairdocs.org/ntsb/SEA99LA103.md): Piper PA-22 · Billings, MT · Accident · No injuries · Limited investigation · Final report · Jul 1, 1999 · N3513A · Substantial damage > The separation of the left main landing gear shock strut for undetermined reasons. - [NTSB MIA99LA191](https://openairdocs.org/ntsb/MIA99LA191.md): Mooney M20F · Liberty, NC · Accident · No injuries · Limited investigation · Final report · Jun 29, 1999 · N7114V · Substantial damage > Improper inspection of the muffler assembly resulting in erosion going undetected and the rupture of the muffler and shroud while in cruise flight. The condition caused melting of portions of the air induction system, loss of engine power, and the pilot's… - [NTSB LAX99LA221](https://openairdocs.org/ntsb/LAX99LA221.md): Cessna 172M · San Diego, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 21, 1999 · N61560 · Destroyed > The mechanic's improper installation of nonapproved automotive electrical system parts, and his failure to ensure that all electrical connections were secure during the reinstallation, which resulted in the failure of the electrical system. The pilot's… - [NTSB FTW99LA170](https://openairdocs.org/ntsb/FTW99LA170.md): Wsk Pzl Mielec M-18A · Basile, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 18, 1999 · N7075D · Substantial damage > The separation of the right wing forward spar lower attachment fitting due to a fatigue fracture, which emanated from corrosion as a result of maintenance not being performed. - [NTSB MIA99LA183](https://openairdocs.org/ntsb/MIA99LA183.md): South Mississippi Light Aircra Buccaneer II · Panacea, FL · Accident · Serious injuries · Limited investigation · Final report · Jun 13, 1999 · N618BC · Substantial damage > The intentional continued operation of the airplane by the pilot-in-command with known deficiencies with the pitot system after takeoff, resulting in erroneous airspeed indications, and inadvertent stall by the pilot resulting in the uncontrolled descent into… - [NTSB LAX99LA215](https://openairdocs.org/ntsb/LAX99LA215.md): AB Sportine Aviacija Genesis 2 · Minden, NV · Accident · 1 fatal · Limited investigation · Final report · Jun 13, 1999 · N240BG · Destroyed > The flight control stabilator becoming disconnected during the initial ground tow. Factors in the accident were the inadequate preflight by the pilot and communications with the pilot not possible. - [NTSB NYC99LA139](https://openairdocs.org/ntsb/NYC99LA139.md): Aero Commander 500S · Windsor Locks, CT · Accident · No injuries · Limited investigation · Final report · Jun 12, 1999 · N33PG · Substantial damage > Hydraulic system contamination which prevented normal landing gear extension. A factor was the misjudged landing flare by the flying pilot. - [NTSB MIA99LA181](https://openairdocs.org/ntsb/MIA99LA181.md): Robinson R-44 · Sevierville, TN · Accident · No injuries · Limited investigation · Final report · Jun 11, 1999 · N49669 · Substantial damage > The induced fatigue fracture of a component in the engine-to-transmission rotor drive system resulting in a disconnection of the drive system during cruise flight caused by inadequate inspection processes by the manufacturer and the subsequent autorotative… - [NTSB CHI99FA177](https://openairdocs.org/ntsb/CHI99FA177.md): Cessna 340A · Phillipsburg, KS · Accident · 2 fatal · Field investigation · Final report · Jun 8, 1999 · N1372G · Destroyed > the pilot not maintaining flying speed. Factors to the accident were the fuel transfer problem of unknown origin. - [NTSB LAX99LA253](https://openairdocs.org/ntsb/LAX99LA253.md): Hughes 369HS · Pacific Ocean (Pacific Ocean) · Accident · Minor injuries · Limited investigation · Final report · Jun 7, 1999 · N4278M · Destroyed > The removal of the tail rotor blade abrasion strips by the use of an unapproved method by the maintenance personnel which resulted in the imbalance of the tail rotor blade assembly and subsequent separation of the 90-degree gear box; the pilot/mechanic's… Next page: https://openairdocs.org/ntsb.md?occurrence=130&page=23 ## 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."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&page=22 --- 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.