# NTSB investigations, 1998: Loss of engine power(total) - mech failure/malf

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 · 78 cases

## Latest cases

- [NTSB LAX99FA057](https://openairdocs.org/ntsb/LAX99FA057.md): Bell UH-1H · Quincy, CA · Accident · 1 fatal · Field investigation · Final report · Dec 23, 1998 · N4590 · Destroyed
  > An inaccurate exhaust gas temperature gauge, that allowed the engine to be run over-temperature unknowingly by the pilot, which resulted in the subsequent failure of the turbine sections. Also causal was the pilot's failure to maintain rotor RPM during the…
- [NTSB FTW99LA052](https://openairdocs.org/ntsb/FTW99LA052.md): Cessna 182 · Umpire, AR · Accident · No injuries · Limited investigation · Final report · Dec 16, 1998 · N1933N · Substantial damage
  > Catastrophic engine failure due to failures of the #5 piston, #5 connecting rod, and the camshaft. A factor was the lack of suitable terrain for a forced landing.
- [NTSB ATL99LA023](https://openairdocs.org/ntsb/ATL99LA023.md): Cessna 175 · Locust Grove, GA · Accident · Minor injuries · Limited investigation · Final report · Nov 25, 1998 · N565ML · Substantial damage
  > Loss of engine power due to a gear train failure in the accessory gearbox for undetermined reasons. A factor was the rough and uneven terrain.
- [NTSB LAX99LA054](https://openairdocs.org/ntsb/LAX99LA054.md): Williams Hurrican HP · Corona, CA · Accident · No injuries · Limited investigation · Final report · Nov 21, 1998 · N323DW · Substantial damage
  > The seizure of the engine due to a cylinder/piston overheat condition for undetermined reasons.
- [NTSB FTW99LA032](https://openairdocs.org/ntsb/FTW99LA032.md): Piper PA32-300 · New Iberia, LA · Accident · Minor injuries · Limited investigation · Final report · Nov 20, 1998 · N2881U · Substantial damage
  > The mechanic's failure to properly torque the connecting rod's bolt and nut during engine overhaul. A factor was the lack of suitable terrain for the forced landing.
- [NTSB MIA99LA032](https://openairdocs.org/ntsb/MIA99LA032.md): Cessna 152 · Miami, FL · Accident · No injuries · Limited investigation · Final report · Nov 12, 1998 · N48013 · Substantial damage
  > The loss of engine power due to a connecting rod failure for undetermined reasons. Contributing to the accident was the unsuitable terrain encountered during the forced landing.
- [NTSB LAX99LA029](https://openairdocs.org/ntsb/LAX99LA029.md): Piper PA-28-150 · Gila Bend, AZ · Accident · No injuries · Limited investigation · Final report · Nov 12, 1998 · N991PK · Substantial damage
  > The crankshaft gear attach bolt loosening and backing out of its crankshaft bore, which led to the fatigue failure of the crankshaft gear dowel pin due to excessive working of the gear. The sequence of failures was the result of the engine overhaul shop's…
- [NTSB IAD99LA015](https://openairdocs.org/ntsb/IAD99LA015.md): Bell 206-B · Louisville, KY · Accident · Minor injuries · Limited investigation · Final report · Nov 12, 1998 · N32KY · Substantial damage
  > A loose 'B' nut on the aircraft's PC Air line which resulted in fuel starvation, and the pilot's abrupt application of aft cyclic to prevent a nose over. Contributing factors were soft terrain and dark night conditions.
- [NTSB ATL99LA017](https://openairdocs.org/ntsb/ATL99LA017.md): Grumman-Schweizer G164B · Cuthbert, GA · Accident · Minor injuries · Limited investigation · Final report · Nov 11, 1998 · N6656Q · Destroyed
  > The fatigue failure of the accessory gear shaft which resulted in fuel starvation and the loss of engine power. A factors was the fuel system filter restriction.
- [NTSB FTW99LA023](https://openairdocs.org/ntsb/FTW99LA023.md): Beech 35-C33 · Tulsa, OK · Accident · Serious injuries · Limited investigation · Final report · Nov 10, 1998 · N24TH · Substantial damage
  > The loss of engine power due to detonation for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.
- [NTSB IAD99GA013](https://openairdocs.org/ntsb/IAD99GA013.md): Schweizer 269C · Baltimore, MD · Accident · 1 fatal · Final report · Nov 4, 1998 · N2100B · Destroyed
  > inadequate assembly instructions from the engine manufacturer which resulted in improper engine assembly, and subsequent power loss over unsuitable terrain, with insufficient altitude for a successful autorotation.
- [NTSB MIA99LA025](https://openairdocs.org/ntsb/MIA99LA025.md): Ercoupe 415-C · Hartselle, AL · Accident · Serious injuries · Limited investigation · Final report · Oct 31, 1998 · N99924 · Substantial damage
  > Improper modification of the carburetor float by maintenance personnel resulting in the float sticking in the full needle valve open position and failure of the engine due to excessive fuel flow.
- [NTSB MIA99LA019](https://openairdocs.org/ntsb/MIA99LA019.md): Cessna 152 · Douglasville, GA · Accident · Minor injuries · Limited investigation · Final report · Oct 28, 1998 · N25037 · Destroyed
  > Failure of the no. 1 cylinder exhaust valve guide due to erosion, which resulted in separation of the exhaust valve head, loss of engine power, and collision with a power pole during a forced landing on unsuitable terrain.
- [NTSB MIA99LA017](https://openairdocs.org/ntsb/MIA99LA017.md): Reinhold Revolution Mini 500 · Hickory, NC · Accident · No injuries · Limited investigation · Final report · Oct 26, 1998 · N500GQ · Substantial damage
  > The seizure of the rear piston in the cylinder barrel resulting in total loss of engine power and an autorotation which resulted in main rotor contact with the tail boom while touching down on unsuitable terrain.
- [NTSB ATL99LA006](https://openairdocs.org/ntsb/ATL99LA006.md): Hiller FH-1100 · Fayette, MS · Accident · No injuries · Limited investigation · Final report · Oct 10, 1998 · N580RH · Substantial damage
  > The fuel filter contamination which resulted in the loss of engine power. The air leak in the fuel system was a factor.
- [NTSB ATL99LA005](https://openairdocs.org/ntsb/ATL99LA005.md): Cessna 188 · Patrick, SC · Accident · No injuries · Limited investigation · Final report · Oct 10, 1998 · N9890V · Substantial damage
  > The failure of the number 2 piston for undetermined reasons.
- [NTSB SEA98LA192](https://openairdocs.org/ntsb/SEA98LA192.md): Mayala Dragonfly · Avon, MT · Accident · Minor injuries · Limited investigation · Final report · Sep 30, 1998 · N4478V · Destroyed
  > Failure of the engine crankshaft aft oil seal resulting in the loss of engine oil, and rough terrain during the forced landing.
- [NTSB SEA98LA188](https://openairdocs.org/ntsb/SEA98LA188.md): Cessna 150L · Freeland, WA · Accident · No injuries · Limited investigation · Final report · Sep 29, 1998 · N5867C · Substantial damage
  > Failure of the number two intake valve rocker arm in fatigue, and overload of the nose landing gear assembly. Factors include a ditch encountered during the forced landing.
- [NTSB LAX98LA308](https://openairdocs.org/ntsb/LAX98LA308.md): Rockwell Commander 114 · Atwater, CA · Accident · No injuries · Limited investigation · Final report · Sep 26, 1998 · N114AL · Substantial damage
  > An internal capacitor failure and melting of the point cam followers, which resulted in failure of both magnetos, and subsequent total loss of engine power.
- [NTSB ANC98LA140](https://openairdocs.org/ntsb/ANC98LA140.md): Cessna 140 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Sep 7, 1998 · N81045 · Substantial damage
  > The loss of engine power due to an in-flight fracture of an engine exhaust valve stem assembly. A factor associated with the accident was the lack of suitable terrain for a forced landing.
- [NTSB MIA98LA242](https://openairdocs.org/ntsb/MIA98LA242.md): Cessna 177RG · Covington, GA · Accident · No injuries · Limited investigation · Final report · Sep 5, 1998 · N2679V · Substantial damage
  > slippage of the No. 3 connecting rod bearing resulting in blockage of the oil port, oil starvation, and subsequent connecting rod failure. A factor was the fence.
- [NTSB DCA98MA084](https://openairdocs.org/ntsb/DCA98MA084.md): Boeing 727-200 · Jamaica, NY · Accident · No injuries · Major investigation · Final report · Aug 31, 1998 · N722DH · Substantial damage
  > The failure of the right main landing gear caused by fatigue cracking and stress corrosion cracking of the trunnion bearing support fitting.
- [NTSB NYC98LA168](https://openairdocs.org/ntsb/NYC98LA168.md): Gulfstream American AA-1A · Erial, NJ · Accident · Minor injuries · Limited investigation · Final report · Aug 16, 1998 · N9364L · Destroyed
  > Catastrophic failure of the number 2 engine cylinder, emanating from a corrosion pit on the outside cylinder wall. A factor was the pilot's diminished forward visibility due to oil on the windshield.
- [NTSB LAX98LA262](https://openairdocs.org/ntsb/LAX98LA262.md): Cessna 150M · Santa Paula, CA · Accident · No injuries · Limited investigation · Final report · Aug 10, 1998 · N704UV · Substantial damage
  > Failure of the number one cylinder due to a fatigue crack that had originated from corrosion pits at the cooling fin.
- [NTSB FTW98LA350](https://openairdocs.org/ntsb/FTW98LA350.md): Piper PA-31-350 · Alamosa, CO · Accident · No injuries · Limited investigation · Final report · Aug 8, 1998 · N27196 · Substantial damage
  > Improper major overhaul of the engine by the overhaul facility. Factors were failure of the V-band clamp, the melting of the baffle and manifold clamp, and the pilot not being able to extend the landing gear.
- [NTSB LAX98LA258](https://openairdocs.org/ntsb/LAX98LA258.md): M. C. Thomas Stewart S-51 · Jackson, CA · Accident · No injuries · Limited investigation · Final report · Aug 5, 1998 · N151MT · Substantial damage
  > Failure of the propeller governor pulley drive shaft due to a modification made to the system by the owner that included welding a retaining pin to the center of the heat treated drive shaft, which compromised the shaft's design strength margin.
- [NTSB LAX98LA256](https://openairdocs.org/ntsb/LAX98LA256.md): Bell 206B · Lucerne Valley, CA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1998 · N5016G · Substantial damage
  > The failure of the mechanic who installed the engine to follow proper procedures by insuring the proper torque to the oil output line, resulting in a loose fitting, oil loss and subsequent bearing failure.
- [NTSB MIA98LA209](https://openairdocs.org/ntsb/MIA98LA209.md): Cessna A-188B · Zolfo Springs, FL · Accident · No injuries · Limited investigation · Final report · Jul 27, 1998 · N21676 · Substantial damage
  > Total loss of engine power due to catastrophic internal engine failure caused by migration of a counterweight retaining.
- [NTSB CHI98LA279](https://openairdocs.org/ntsb/CHI98LA279.md): Piper PA-22 · Muskegon, MI · Accident · No injuries · Limited investigation · Final report · Jul 27, 1998 · N875A · Substantial damage
  > A loss of engine power due to a broken number 4 cylinder connecting rod for undetermined reasons. Contributing to this accident was the road embankment.
- [NTSB MIA98LA206](https://openairdocs.org/ntsb/MIA98LA206.md): Piper PA-28-161 · Tampa, FL · Accident · No injuries · Limited investigation · Final report · Jul 24, 1998 · N8258E · Substantial damage
  > Total loss of engine power due to a hydraulic valve lifter failure.
- [NTSB FTW98FA307](https://openairdocs.org/ntsb/FTW98FA307.md): Cessna 172N · Lincoln, TX · Accident · Serious injuries · Field investigation · Final report · Jul 11, 1998 · N5632E · Destroyed
  > The #3 cylinder exhaust valve rocker arm fulcrum retaining stud backing out of its stud-tapped hole due to the improper tapping of the stud hole by unknown maintenance personnel. Contributing factors were the transmission wire, sign and gasoline pump.
- [NTSB MIA98IA193](https://openairdocs.org/ntsb/MIA98IA193.md): Boeing 737-7H4 · Birmingham, AL · Incident · No injuries · Incident investigation · Final report · Jul 7, 1998 · N701GS · Minor damage
  > The improper electronic control unit software logic that permitted the electronic control unit to lock on a failed hydromechanical resolver, which failed due to damage to a wire that was incurred during the manufacturing process, resulting in an uncommanded…
- [NTSB FTW98LA302](https://openairdocs.org/ntsb/FTW98LA302.md): Keith Team Mini MAX 1600R · Santa Fe, TX · Accident · No injuries · Limited investigation · Final report · Jul 4, 1998 · N106BK · Substantial damage
  > The loss of engine power as result of the failure of the cooling fan belt. A factor was the lack of suitable terrain for the pilot to execute the forced landing.
- [NTSB CHI98LA242](https://openairdocs.org/ntsb/CHI98LA242.md): Brunnemer HMB-2 · Greenwood, IN · Accident · No injuries · Limited investigation · Final report · Jul 4, 1998 · N9129F · Substantial damage
  > A loss of engine power due to a fractured ignition coil. A factor to the accident was the soft terrain.
- [NTSB LAX98IA218](https://openairdocs.org/ntsb/LAX98IA218.md): Aero Commander 681B · Reno, NV · Incident · No injuries · Incident investigation · Final report · Jun 29, 1998 · N520CS · Minor damage
  > The failure and separation of the first and third stage turbine disks for undetermined reasons.
- [NTSB LAX98LA214](https://openairdocs.org/ntsb/LAX98LA214.md): Cessna 172 · Flagstaff, AZ · Accident · No injuries · Limited investigation · Final report · Jun 27, 1998 · N7188A · Substantial damage
  > Oil system contamination with an unidentified metal substance that traveled through the oil system and blocked the number 4 main bearing and number 6 connecting rod bearing oil ports, resulting in oil starvation and failure of the engine. The source of the…
- [NTSB ANC98LA078](https://openairdocs.org/ntsb/ANC98LA078.md): Cessna 207 · Holy Cross, AK · Accident · No injuries · Limited investigation · Final report · Jun 20, 1998 · N1673U · Substantial damage
  > The improper installation/undertorquing of the engine crankcase bolts by company maintenance personnel, and a subsequent fracture of the engine crankshaft. A factor in the accident was unsuitable terrain for a forced landing.
- [NTSB SEA98FA104](https://openairdocs.org/ntsb/SEA98FA104.md): Garlick UH-1H · Couer D'Alene, ID · Accident · No injuries · Field investigation · Final report · Jun 18, 1998 · N869W · Substantial damage
  > Fatigue failure of a reduction drive planetary gear. Factors include an unapproved part and plating process, and uneven terrain at the emergency landing site.
- [NTSB SEA98LA096](https://openairdocs.org/ntsb/SEA98LA096.md): Cessna 172R · Independence, OR · Accident · No injuries · Limited investigation · Final report · Jun 14, 1998 · N9514P · Substantial damage
  > A loss of power due to fatigue failure and cracking of an engine cylinder barrel.
- [NTSB SEA98FA092](https://openairdocs.org/ntsb/SEA98FA092.md): Cessna T210N · Hillsboro, OR · Accident · 2 fatal · Field investigation · Final report · Jun 9, 1998 · N199JM · Destroyed
  > Improper installation (bushing), mechanical binding (bushing), mechanical binding (connecting rod), and fatigue within the crankshaft. Contributing factors were inadequate major (engine) overhaul and trees.
- [NTSB LAX98LA192](https://openairdocs.org/ntsb/LAX98LA192.md): Arner Challenger II S · Pleasant Valley, AZ · Accident · No injuries · Limited investigation · Final report · Jun 7, 1998 · N2NX · Substantial damage
  > Loss of engine power due to a loose spark plug wire cap caused by a broken spark plug retainer spring.
- [NTSB LAX98LA254](https://openairdocs.org/ntsb/LAX98LA254.md): Girgen Kitfox II · Peoria, AZ · Accident · Minor injuries · Limited investigation · Final report · Jun 6, 1998 · N62KF · Substantial damage
  > An engine failure due to a broken rotary valve for unknown reasons. Contributing factors to the accident was an inadequate inspection by the owner of a previously damaged engine during maintenance overhaul prior to installation in the airframe.
- [NTSB CHI98LA178](https://openairdocs.org/ntsb/CHI98LA178.md): Cessna 414 · North Platte, NE · Accident · Minor injuries · Limited investigation · Final report · May 28, 1998 · N888AA · Destroyed
  > the slipped number two bearing in the airplane's right engine, which blocked the bearing's oil feed line, causing the bearing and the crankshaft to overheat and fracture. A factor contributing to this accident was the trees.
- [NTSB NYC98FA112](https://openairdocs.org/ntsb/NYC98FA112.md): Beech A36 · Middletown, RI · Accident · 2 fatal · Field investigation · Final report · May 25, 1998 · N4507S · Destroyed
  > The shift of the number 2 engine bearing, which in turn blocked oil lubrication, and resulted in crankshaft failure. Also causal, was the pilot's decision to continue toward the airport instead of performing a forced landing to an available field. Factors…
- [NTSB FTW98FA239](https://openairdocs.org/ntsb/FTW98FA239.md): Bell 206L-3 · Springdale, AR · Accident · Serious injuries · Field investigation · Final report · May 24, 1998 · N27AE · Substantial damage
  > The failure of maintenance personnel to properly assemble the engine's accessory gearbox, which resulted in a total loss of engine power due to partial blockage of the main oil passage by an o-ring. The blockage reduced oil flow to the turbine shafting, which…
- [NTSB LAX98LA166](https://openairdocs.org/ntsb/LAX98LA166.md): McDonnell Douglas 520N · Lanai City,Maui, HI · Accident · Minor injuries · Limited investigation · Final report · May 20, 1998 · N112HD · Destroyed
  > An oil starvation failure of the number 5 bearing for undetermined reasons.
- [NTSB FTW98FA229](https://openairdocs.org/ntsb/FTW98FA229.md): Piper PA-23-160 · Guthrie, OK · Accident · 2 fatal · Field investigation · Final report · May 18, 1998 · N4410P · Destroyed
  > The designated pilot examiner's decision to execute a single engine go-around which exceeded the airplane's engine out climb capability in the gear down configuration. Factors were the arcing of an electrical wire that grounded the engine starter and the high…
- [NTSB LAX98LA162](https://openairdocs.org/ntsb/LAX98LA162.md): Schweizer G164D · Richvale, CA · Accident · No injuries · Limited investigation · Final report · May 17, 1998 · N8177K · Destroyed
  > The separation of four compressor/turbine blades resulting in a sudden loss of engine power with a subsequent forced landing into unsuitable terrain.
- [NTSB FTW98FA216](https://openairdocs.org/ntsb/FTW98FA216.md): Beagle B-206 · Vernon, TX · Accident · 3 fatal · Field investigation · Final report · May 16, 1998 · N1885S · Destroyed
  > The pilot's failure to maintain the airplane's minimum controllable airspeed following a loss of left engine power after takeoff, which resulted in a loss of control. Contributing factors were the fractured exhaust valve guide on the left engine's # 2…
- [NTSB NYC98LA109](https://openairdocs.org/ntsb/NYC98LA109.md): Deberry Marquart MA-5 · Westminster, MD · Accident · Minor injuries · Limited investigation · Final report · May 15, 1998 · N83MC · Destroyed
  > Failure of a fuel line fitting which led to an engine failure and fire. A factor was the lack of suitable terrain for the forced landing.

Next page: https://openairdocs.org/ntsb.md?year=1998&occurrence=351&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 year(c."eventDate") = 1998
  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" = 351)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=351&year=1998

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