# NTSB investigations, UT: 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 2 · 55 cases ## Latest cases - [NTSB SEA06LA175](https://openairdocs.org/ntsb/SEA06LA175.md): Straw T-Bird II · Leamington, UT · Accident · Serious injuries · Limited investigation · Final report · Sep 4, 2006 · N339JL · Destroyed > The pilot's loss of aircraft control (control not possible) due to the failure of the left elevator control surface which was the result of a missing inboard bolt (for undetermined reason) which holds the left elevator bow in place. - [NTSB SEA06FA146](https://openairdocs.org/ntsb/SEA06FA146.md): Spectrum Aeronautical 33 · Spanish Fork, UT · Accident · 2 fatal · Field investigation · Final report · Jul 25, 2006 · N322LA · Destroyed > Incorrect installation by company maintenance personnel of the aft upper torque tube bell crank resulting in roll control that was opposite to that commanded in the cockpit. Contributing factors were the lack of maintenance documentation detailing the… - [NTSB SEA06LA135](https://openairdocs.org/ntsb/SEA06LA135.md): Hughes 369D · Moab, UT · Accident · No injuries · Limited investigation · Final report · Jun 30, 2006 · N369PB · Substantial damage > The failure of the collective bungee support bracket due to non-compliance with a service information notice, which resulted in the pilot executing a precautionary autorotative landing. A contributing factor was the lack of suitable terrain for the landing. - [NTSB SEA06CA108](https://openairdocs.org/ntsb/SEA06CA108.md): Grumman AA-1B · Bountiful, UT · Accident · Minor injuries · Data collection · Final report · May 30, 2006 · N8866L · Substantial damage > An obstructed windshield which resulted in the pilot misjudging the distance/altitude during an emergency landing. An oil leak as a result of a leaking crankshaft seal was a factor. - [NTSB DEN05CA105](https://openairdocs.org/ntsb/DEN05CA105.md): Navion Navion G · Parowan, UT · Accident · No injuries · Data collection · Final report · Jun 25, 2005 · N2484T · Substantial damage > The jammed left main landing gear and the wheels up landing. Factors contributing to the accident were the misaligned left landing light and that landing gear extension was not possible. - [NTSB DEN04LA091](https://openairdocs.org/ntsb/DEN04LA091.md): Piper PA-24-250 · Ogden, UT · Accident · No injuries · Limited investigation · Final report · Jun 14, 2004 · N6867P · Substantial damage > fracture and subsequent total failure of the nose gear strut. A contributing factor was the pilot not being able to control the airplane. - [NTSB DEN03LA156](https://openairdocs.org/ntsb/DEN03LA156.md): Cessna R182 · Cedar City, UT · Accident · No injuries · Limited investigation · Final report · Sep 24, 2003 · N6078C · Substantial damage > the nose wheel separating from the airplane during the precautionary landing. Factors contributing to the accident were the missing nose gear axle through-bolt and the missing cotter pin. - [NTSB DEN03FA099](https://openairdocs.org/ntsb/DEN03FA099.md): Agusta A109K2 · Salt Lake City, UT · Accident · 1 fatal · Field investigation · Final report · Jun 8, 2003 · N123RX · Destroyed > Fatigue of the tail rotor trunnion resulting in complete trunnion failure and subsequent tail rotor separation from the helicopter. Factors contributing to the accident were the low altitude, low airspeed, excessive tail rotor loading, and the worn tail-rotor… - [NTSB DEN03IA067](https://openairdocs.org/ntsb/DEN03IA067.md): Boeing 757-232 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Apr 17, 2003 · N6712B · Minor damage > total failure of a fuel flex line. A contributing factor was a fuel leak, resulting in an inflight engine compartment fire. - [NTSB DEN03LA041](https://openairdocs.org/ntsb/DEN03LA041.md): Aerospatiale AS-350BII · Vernal, UT · Accident · Serious injuries · Limited investigation · Final report · Feb 7, 2003 · CFLHA · Substantial damage > The pilot's inadequate planning resulting in his inattentiveness of the attached longline. Contributing factors were the entanglement of the longline in the tail rotor, failure of the tail rotor drive shaft, and subsequent inability of the pilot to control… - [NTSB DEN03FA034](https://openairdocs.org/ntsb/DEN03FA034.md): Yakovlev YAK 52 · Midway, UT · Accident · 2 fatal · Field investigation · Final report · Jan 16, 2003 · N2256J · Destroyed > The malfunction of the elevator control as a result of a jammed elevator control bell crank, rendering control of the airplane impossible. A contributing factor was the foreign object (nut) damage. - [NTSB DEN03IA033](https://openairdocs.org/ntsb/DEN03IA033.md): Boeing 757-222 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Jan 11, 2003 · N551UA · Minor damage > the arcing wires in the lavatory sensor that resulted in the subsequent fire. - [NTSB SEA02LA050](https://openairdocs.org/ntsb/SEA02LA050.md): Unander Velocity 173RG · West Jordan, UT · Accident · No injuries · Limited investigation · Final report · Mar 6, 2002 · N278GJ · Substantial damage > The pilot's failure to ensure that the gear was extended prior to landing. Factors included a failure of a hydraulic down-pressure switch, and the pilot's attention diverted to another aircraft executing an opposite-direction traffic pattern. - [NTSB DEN01LA087](https://openairdocs.org/ntsb/DEN01LA087.md): Mooney M20K · Bountiful, UT · Accident · No injuries · Limited investigation · Final report · Apr 17, 2001 · N921Z · Substantial damage > the failure of the airplane's electrical system for an undetermined reason, which resulted in the collapse of the left main gear on landing. - [NTSB DEN01LA069](https://openairdocs.org/ntsb/DEN01LA069.md): Boeing Stearman E75 · Heber, UT · Accident · No injuries · Limited investigation · Final report · Mar 7, 2001 · N75848 · Substantial damage > Uncommanded locking of the right brake, resulting in loss of control and nose over during landing. - [NTSB DEN00LA100](https://openairdocs.org/ntsb/DEN00LA100.md): Culver LFA · Moab, UT · Accident · No injuries · Limited investigation · Final report · Jun 2, 2000 · N34783 · Substantial damage > Overheating of the left brake, causing the wheel to lock. Factors were the pilot not being able to maintain directional control, a dirt berm, and a drainage ditch. - [NTSB DEN00LA099](https://openairdocs.org/ntsb/DEN00LA099.md): Cessna TR182 · Milford, UT · Accident · Minor injuries · Limited investigation · Final report · May 31, 2000 · N738FN · Substantial damage > The failure of the turbocharger scavenging pump resulting in the total failure of the engine, and the pilot's failure to compensate for wind conditions that led him to over fly the runway during his forced landing. Factors were the pilot's diverted attention… - [NTSB DEN00LA045](https://openairdocs.org/ntsb/DEN00LA045.md): Bell 212 · Mt Pleasant, UT · Accident · Serious injuries · Limited investigation · Final report · Jan 29, 2000 · N212HQ · Substantial damage > Failure of the main rotor mast due to fatigue that resulted from inadequate quality assurance during the manufacturing process. - [NTSB DEN00IA032](https://openairdocs.org/ntsb/DEN00IA032.md): Boeing 737-347 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Dec 24, 1999 · N305WA · Minor damage > Improper assembly of the wheel during build up in the operator's maintenance facilities. - [NTSB DEN00IA023](https://openairdocs.org/ntsb/DEN00IA023.md): Boeing 767-232 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Dec 6, 1999 · N111DN · Minor damage > Total failure of the main landing gear retract actuator due to stress corrosion caused by the use of a faulty sealant by company maintenance personnel that allowed moisture to enter the joint. A factor was the use of an improper fillet seal. - [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 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 FTW98FA325](https://openairdocs.org/ntsb/FTW98FA325.md): Commander 114TC · West Jordan, UT · Accident · 1 fatal · Field investigation · Final report · Jul 18, 1998 · N61174 · Destroyed > A brittle fracture of the clamp that joins the exhaust pipe to the turbocharger. The pipe separated and hot exhaust gases escaped into the engine compartment. The engine lost power due to the high heat vaporizing fuel in the fuel line. Factors were inadequate… - [NTSB FTW98FA276](https://openairdocs.org/ntsb/FTW98FA276.md): Beech A36 · Nephi, UT · Accident · 2 fatal · Field investigation · Final report · Jun 20, 1998 · N3861K · Destroyed > The improper installation of the turbocharger exhaust stack by unknown maintenance personnel and the subsequent fire in the engine compartment due to the exhaust gas leak from the turbocharger. Factors were the total loss of engine power due to fuel line… - [NTSB FTW98LA241](https://openairdocs.org/ntsb/FTW98LA241.md): Mader WAG-AERO 2+2 · Hurricane, UT · Accident · No injuries · Limited investigation · Final report · May 24, 1998 · N6272A · Substantial damage > An encounter with high vegetation and unsuitable terrain during a forced landing. A factor was a partial failure of the engine's exhaust stack during flight. - [NTSB FTW98FA044](https://openairdocs.org/ntsb/FTW98FA044.md): Piper PA-34-200T · Myton, UT · Accident · 1 fatal · Field investigation · Final report · Nov 7, 1997 · N2119D · Destroyed > The pilot exceeded the design stress limits of the airplane which resulted in an in-flight airframe overload failure. A related factor was the dark night. - [NTSB FTW98LA027](https://openairdocs.org/ntsb/FTW98LA027.md): Helio H-800 · Ogden, UT · Accident · No injuries · Limited investigation · Final report · Oct 20, 1997 · N40013 · Substantial damage > failure of the tail wheel assembly, which rendered the aircraft uncontrollable during landing roll. - [NTSB FTW98TA051](https://openairdocs.org/ntsb/FTW98TA051.md): Cessna P210N · Bryce Canyon, UT · Incident · No injuries · Final report · Oct 15, 1997 · N731NX · Minor damage > The failure of the resistor (inverter) in the door seal pressurization air pump due to continuous operation. Factors were a failure in the door seal pressurization system, its inadequate design by the manufacturer, its inadequate written instructions for… - [NTSB FTW97IA363](https://openairdocs.org/ntsb/FTW97IA363.md): Boeing 737-200RS · Salt Lake City, UT · Incident · Minor injuries · Incident investigation · Final report · Sep 24, 1997 · N205AU · Minor damage > The captain's failure to maintain directional control during landing roll. Factors were the loss of hydraulic pressure in the 'A' hydraulic system, the thrust reverser failure on the number one engine, and flight crew coordination not being maintained. - [NTSB SEA97LA058](https://openairdocs.org/ntsb/SEA97LA058.md): Cessna 421C · Cedar City, UT · Accident · No injuries · Limited investigation · Final report · Feb 6, 1997 · N45MV · Substantial damage > water contamination in the hydraulic system, which froze in the (right) main gear hydraulic actuator, and restricted movement of the (right) main gear retraction and extension system. - [NTSB SEA96IA131](https://openairdocs.org/ntsb/SEA96IA131.md): Boeing 767-332 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Jun 20, 1996 · N136DL · Minor damage > failure of maintenance personnel to properly disconnect (disengage) the right integrated drive generator (IDG) in compliance with the MEL dispatch procedure, which allowed the right IDG to overheat. Factors relating to the incident were: low oil pressure in… - [NTSB LAX96IA065](https://openairdocs.org/ntsb/LAX96IA065.md): Beech 99 · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Nov 30, 1995 · N134PM · No damage > improper installation of the rudder control cable by company maintenance personnel, which resulted in chafing and/or fatigue and subsequent failure of the cable. - [NTSB SEA96LA013](https://openairdocs.org/ntsb/SEA96LA013.md): Cessna TR182 · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Oct 28, 1995 · N4664S · Substantial damage > maintenance personnel improperly installed a landing gear system hydraulic line and the throttle cable which resulted in chaffing and subsequent loss of hydraulic fluid disabling the landing gear extention systems. - [NTSB SEA95LA195](https://openairdocs.org/ntsb/SEA95LA195.md): Maule M-5-235C · Ogden, UT · Accident · No injuries · Limited investigation · Final report · Aug 27, 1995 · N9281E · Substantial damage > the pilot's failure to use brakes to maintain directional control following a tailwheel steering malfunction. Partial failure of the tailwheel steering system contributed to the accident. - [NTSB SEA95LA178](https://openairdocs.org/ntsb/SEA95LA178.md): Cessna 210E · Bullfrog, UT · Accident · No injuries · Limited investigation · Final report · Aug 10, 1995 · N2377F · Substantial damage > The right brake locking for undetermined reasons. - [NTSB SEA95LA030](https://openairdocs.org/ntsb/SEA95LA030.md): Maule MX-7-235 · Heber City, UT · Accident · No injuries · Limited investigation · Final report · Dec 17, 1994 · N101ZA · Substantial damage > An open connection clip. A factor to the accident was a locked tail wheel assembly. - [NTSB SEA94LA142](https://openairdocs.org/ntsb/SEA94LA142.md): 1ST FTR GP FOCKE-WULF 190 · Salt Lake City, UT · Accident · 1 fatal · Limited investigation · Final report · Jun 8, 1994 · N25074 · Destroyed > Improper balancing of the ailerons resulting in aileron flutter. - [NTSB SEA94LA125](https://openairdocs.org/ntsb/SEA94LA125.md): Kelly Long EZ · Lindon, UT · Accident · Serious injuries · Limited investigation · Final report · May 21, 1994 · N8JE · Substantial damage > Piston failure and unsuitable terrain for a successful forced landing. - [NTSB SEA94LA092](https://openairdocs.org/ntsb/SEA94LA092.md): Grumman-Schweizer G-164B · Levan, UT · Accident · No injuries · Limited investigation · Final report · Mar 30, 1994 · N6754Q · Substantial damage > The left main landing gear wheel bearing broke resulting in the wheel jamming and the airplane nosing over. - [NTSB SEA91LA028](https://openairdocs.org/ntsb/SEA91LA028.md): Aerospatiale SA316B · Vernal, UT · Accident · Minor injuries · Limited investigation · Final report · Dec 3, 1990 · N316BS · Destroyed > A malfunction/failure of the helicopter's main rotor lead-lag damper. - [NTSB DEN90LA086](https://openairdocs.org/ntsb/DEN90LA086.md): Schweizer SGS 2-33A · Morgan, UT · Accident · No injuries · Limited investigation · Final report · Apr 4, 1990 · N2048T · Substantial damage > Separation of the tow rope and the pilot's failure to establish an appropriate descent rate as he returned to land. Contributing to the accident were the tailwind and the unsuitable terrain for landing beyond the runway end. - [NTSB DEN90LA065](https://openairdocs.org/ntsb/DEN90LA065.md): Cessna P206A · Logan, UT · Accident · No injuries · Limited investigation · Final report · Feb 24, 1990 · N4679F · Destroyed > The pilot flew the aircraft with an improper modification to the fuel system, which resulted in a fuel leak and subsequent fire. - [NTSB DEN90LA054](https://openairdocs.org/ntsb/DEN90LA054.md): Piper PA-32RT-300T · Provo, UT · Accident · No injuries · Limited investigation · Final report · Feb 3, 1990 · N21492 · Substantial damage > Improper installation by maintenance personnel and fatigue failure and leakage of the left intermediate exhaust pipe, which resulted in an in-flight fire in the engine compartment. Contributing factors were: inadequate service bulletin provided by the… - [NTSB DEN89FA076](https://openairdocs.org/ntsb/DEN89FA076.md): Swearingen SA226TC · Saint George, UT · Accident · No injuries · Field investigation · Final report · Feb 11, 1989 · N1010Z · Substantial damage > Malfunction of the nosewheel steering system due to improper installation of the nosewheel steering poppet valve & inadequate maintenance instructions. - [NTSB DEN88LA074](https://openairdocs.org/ntsb/DEN88LA074.md): Cessna 152 · Hurricane, UT · Accident · No injuries · Limited investigation · Final report · Feb 18, 1988 · N67515 · Substantial damage > The student plt said that when he departed st. george, UT for Hurricane, which is 21 NM northeast, the wind was from the south at about 5 KTS. He landed to the north at Hurricane. He said he did not notice any wind as he prepared to depart to the south. Upon… - [NTSB DEN87DTM01](https://openairdocs.org/ntsb/DEN87DTM01.md): Evans VP-2 · Cedar Valley, UT · Accident · Serious injuries · Final report · Sep 18, 1987 · N84772 · Destroyed > The acft was flown by two different plts who complained of stiff ailerons. The aileron system was examined but no deficiencies were noted. A third plt then took off and began a lt turn at about 75 to 100 ft AGL. When he attempted to return to wings level he… - [NTSB DEN87LA215](https://openairdocs.org/ntsb/DEN87LA215.md): Piper PA-34-220T · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Aug 11, 1987 · N2431Q · Substantial damage > The pilot stated the touchdown seemed normal but the aircraft began to porpoise, the propellers struck the runway and the aircraft came to a stop. A post accident inspection revealed the nose gear steering roller had become dislodged and prevented proper… - [NTSB DEN86LA067](https://openairdocs.org/ntsb/DEN86LA067.md): Piper PA-22-150 · Cedar City, UT · Accident · Minor injuries · Limited investigation · Final report · Jan 19, 1986 · N5950D · Substantial damage > The plt stated that while in cruise flt, a loud noise was heard followed by air entering the cockpit. The plt said he initially reduced pwr, not knowing what the problem was. According to the plt, when no visual problem with the aircraft was found, he added… - [NTSB DEN86LA016](https://openairdocs.org/ntsb/DEN86LA016.md): Hiller UH-12E · Vernal, UT · Accident · No injuries · Limited investigation · Final report · Nov 1, 1985 · N400AH · Substantial damage > The plt stated he had just departed a site located on top of a mountain, which is approximately 12,200 ft MSL. The pilot said 30 seconds later, the helicopter lost partial power. Requiring him to make a force landing. The inspection of the turbocharger… - [NTSB DEN83FA215](https://openairdocs.org/ntsb/DEN83FA215.md): Hughes 369D · Woodruff, UT · Accident · Minor injuries · Field investigation · Final report · Sep 12, 1983 · N8667F · Substantial damage > The helicopter was being used to lift seismic materials on a 100 ft long line. After lifting the load to a hover at about 10 to 20 ft, the plt heard a loud 'bang' which was followed by a loss of directional control. The helicopter began uncontrolled spinning… Next page: https://openairdocs.org/ntsb.md?state=UT&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" = 'UT' 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=UT --- 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.