# NTSB investigations: NONE, WA

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 · 65 cases

## Latest cases

- [NTSB WPR26LA203](https://openairdocs.org/ntsb/WPR26LA203.md): Pzl-Swidnik PW-5 · Soap Lake, WA · Accident · No injuries · Class 4 · Limited · Final report · May 23, 2026 · N157AJ · Substantial damage
  > The pilot’s failure to ensure the proper preflight assembly of the glider's wing attachment system, which resulted in substantial damage to the wing structure during flight.
- [NTSB WPR25LA177](https://openairdocs.org/ntsb/WPR25LA177.md): Rolladen Schneider LS-7WL · Tonasket, WA · Accident · No injuries · Class 4 · Limited · Final report · Jun 11, 2025 · N78AW · Substantial damage
  > The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight.
- [NTSB WPR22LA374](https://openairdocs.org/ntsb/WPR22LA374.md): Ica Brasov IS-28B2 · Deer Park, WA · Accident · No injuries · Class 4 · Limited · Final report · Aug 13, 2022 · N213SS · Substantial damage
  > The pilot’s improper landing flare which resulted in a hard landing.
- [NTSB WPR22LA223](https://openairdocs.org/ntsb/WPR22LA223.md): DG Flugzeugbau DG 1000S · Lake Chelan, WA · Accident · No injuries · Class 4 · Limited · Final report · Jun 22, 2022 · N767SS · Substantial damage
  > The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight. Contributing to the accident was the pilot’s decision to overfly a suitable landing site which resulted in an off-field landing in a lake.
- [NTSB WPR21LA235](https://openairdocs.org/ntsb/WPR21LA235.md): HPH Glasflugel · Winthrop, WA · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 20, 2021 · N974CQ · Substantial damage
  > The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight.
- [NTSB WPR20CA151](https://openairdocs.org/ntsb/WPR20CA151.md): Let L 33 Solo · Arlington, WA · Accident · No injuries · Class 4 · Data collection · Final report · May 11, 2020 · N355BA · Substantial damage
  > The loss of lift while on final approach which resulted in a hard off-airport landing.
- [NTSB GAA20CA058](https://openairdocs.org/ntsb/GAA20CA058.md): Let L13 · Enumclaw, WA · Accident · No injuries · Data collection · Final report · Oct 28, 2019 · N213TA · Substantial damage
  > The pilot's failure to maintain a proper glidepath, which resulted in a collision with trees.
- [NTSB WPR16LA189](https://openairdocs.org/ntsb/WPR16LA189.md): Dehavilland Beaver DHC 2 MK.1 · Lopez Island, WA · Accident · Serious injuries · Limited investigation · Final report · Sep 30, 2016 · N6781L · Substantial damage
  > The pilot's decision to land in an area of low visibility and ground fog, which resulted in collision with water.
- [NTSB WPR14CA219](https://openairdocs.org/ntsb/WPR14CA219.md): Pzl-Swidnik PW 5 · Enumclaw, WA · Accident · Minor injuries · Data collection · Final report · May 31, 2014 · N77FZ · Substantial damage
  > The pilot's failure to maintain control of the glider during the landing flare which resulted in a stall and hard landing.
- [NTSB WPR12FA010](https://openairdocs.org/ntsb/WPR12FA010.md): DG Flugzeugbau DG 1000S · Cle Elum, WA · Accident · 1 fatal · Field investigation · Final report · Oct 13, 2011 · N7760A · Substantial damage
  > The pilot’s failure to maintain airspeed and control after takeoff, which resulted in an aerodynamic stall.
- [NTSB WPR10LA139](https://openairdocs.org/ntsb/WPR10LA139.md): Grumman Acft ENG Cor-Schweizer G-164B · Colfax, WA · Accident · No injuries · Limited investigation · Final report · Feb 18, 2010 · N6774Q · Substantial damage
  > A partial loss of engine power due to carburetor ice as a result of the pilot's failure to use carburetor heat.
- [NTSB SEA08CA163](https://openairdocs.org/ntsb/SEA08CA163.md): Let Blanik L-13 · Arlington, WA · Accident · Minor injuries · Data collection · Final report · Jul 21, 2008 · N48029 · Substantial damage
  > The pilot's failure to maintain clearance from a tree while making an off-field landing in a glider. Contributing to the accident was the pilot's inadequate compensation for the gusting winds.
- [NTSB SEA06CA143](https://openairdocs.org/ntsb/SEA06CA143.md): Rolladen-Schneider LS3A · Enumclaw, WA · Accident · No injuries · Data collection · Final report · Jul 9, 2006 · N43MM · Substantial damage
  > The glider pilot's failure to maintain directional control during the landing roll, resulting in the aircraft impacting the dirt embankment on the side of the emergency run-out area. Factors include the pilot's improper decision not to deploy more airbrakes…
- [NTSB SEA05LA114](https://openairdocs.org/ntsb/SEA05LA114.md): Avia Stroitel AC-4B · Wenatchee, WA · Accident · 1 fatal · Limited investigation · Final report · Jun 11, 2005 · N1198Z · Destroyed
  > The pilot's failure to maintain terrain clearance for undetermined reasons.
- [NTSB SEA04FA111](https://openairdocs.org/ntsb/SEA04FA111.md): TeST TST-10 M · Enumclaw, WA · Accident · 1 fatal · Field investigation · Final report · Jun 21, 2004 · N410JP · Substantial damage
  > Aircraft control not maintained while maneuvering for landing. A proper glidepath was not maintained was a factor.
- [NTSB SEA04LA063](https://openairdocs.org/ntsb/SEA04LA063.md): Glasflugel STD Libelle 201B · Oso, WA · Accident · 1 fatal · Limited investigation · Final report · Apr 2, 2004 · N161D · 2 aircraft · Substantial damage
  > The pilot of the Glaser-Dirks (lead glider) failure to maintain clearance from the Glasflugel (trailing glider) resulting in a mid-air collision while maneuvering.
- [NTSB SEA03LA072](https://openairdocs.org/ntsb/SEA03LA072.md): Schempp-Hirth Cirrus · Ephrata, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 26, 2003 · N3839 · Substantial damage
  > The pilot's failure to maintain aircraft control while on final approach for landing. Low airspeed was a factor.
- [NTSB SEA03LA061](https://openairdocs.org/ntsb/SEA03LA061.md): Avia Stroitel AC-5M · Richland, WA · Accident · No injuries · Limited investigation · Final report · Apr 12, 2003 · N125MZ · Substantial damage
  > The pilot's failure to maintain airspeed and the failure of the propeller drive assembly. A factor contributing to the accident was the inadvertent stall.
- [NTSB SEA01LA153](https://openairdocs.org/ntsb/SEA01LA153.md): Let Blanik L-13 · Enumclaw, WA · Accident · Serious injuries · Limited investigation · Final report · Aug 19, 2001 · N82AS · Substantial damage
  > The premature release of the towline and the pilot's improper selection of a landing area following the release. Factors include improper preflight planning.
- [NTSB SEA01LA150](https://openairdocs.org/ntsb/SEA01LA150.md): I.C.A. Brasov IS-28B2 · Wenatchee, WA · Accident · Minor injuries · Limited investigation · Final report · Aug 15, 2001 · N29JB · Substantial damage
  > Failure to maintain clearance from terrain during a low altitude turn. The second pilot overshooting the runway was a contributing factor to the accident.
- [NTSB SEA01LA149](https://openairdocs.org/ntsb/SEA01LA149.md): Grumman G-164B · Quincy, WA · Accident · No injuries · Limited investigation · Final report · Aug 11, 2001 · N6774Q · Substantial damage
  > The failure of the impeller assembly as a consequence of impeller rub and binding within the impeller collector case for undetermined reasons.
- [NTSB SEA01LA147](https://openairdocs.org/ntsb/SEA01LA147.md): Schweizer SGS 1-26B · Rock Island, WA · Accident · No injuries · Limited investigation · Final report · Aug 7, 2001 · N5768S · Substantial damage
  > The student pilot's improper inflight planning and decision (delay in establishing an approach to a suitable landing area) and his subsequent failure to attain the proper glidepath for the selected landing area, resulting in an overshoot of the selected…
- [NTSB SEA01LA091](https://openairdocs.org/ntsb/SEA01LA091.md): Let L-23 · Arlington, WA · Accident · No injuries · Limited investigation · Final report · May 5, 2001 · N265BA · Substantial damage
  > the flight instructor's improper decision to partially retract the spoilers while the student was attempting to land. Factors include a tailwind, wet grass, and a taxiway sign off the end of the landing area.
- [NTSB SEA01LA081](https://openairdocs.org/ntsb/SEA01LA081.md): de Havilland DHC-2 · Seattle, WA · Accident · No injuries · Limited investigation · Final report · Apr 30, 2001 · N6781L · Substantial damage
  > The high wind conditions encountered as the aircraft began its takeoff roll. Contributing factors were the variable and gusty wind conditions.
- [NTSB SEA98TA156](https://openairdocs.org/ntsb/SEA98TA156.md): Schweizer SGS 2-33 · Ephrata, WA · Accident · Minor injuries · Final report · Aug 2, 1998 · N5720S · Substantial damage
  > The student pilot-in-command's failure to maintain control of the aircraft during the landing. Contributing factors were panic and inadequate initial training.
- [NTSB SEA98LA155](https://openairdocs.org/ntsb/SEA98LA155.md): Burkhart Grob G102 · Douglas, WA · Accident · No injuries · Limited investigation · Final report · Jul 3, 1998 · N707NL · Substantial damage
  > The pilot's failure to maintain clearance from objects on the ground. Factors include misjudgment of weather conditions (unfavorable winds).
- [NTSB SEA97LA038](https://openairdocs.org/ntsb/SEA97LA038.md): Beech BE-77 · Spokane, WA · Accident · No injuries · Limited investigation · Final report · Dec 18, 1996 · N6043M · 2 aircraft · Substantial damage
  > The failure of the pilots of both airplanes to see and avoid each other. A factor contributing to the accident was the Cessna's pilot diverted attention.
- [NTSB SEA95LA228](https://openairdocs.org/ntsb/SEA95LA228.md): Cessna 182R · Spokane, WA · Accident · No injuries · Limited investigation · Final report · Sep 28, 1995 · N5949E · Substantial damage
  > failure of the pilot to properly flare the airplane during the landing. Factors relating to the accident were: the pilot's improper approach to land, exceeding the proper touchdown point for landing, failure to go-around, while there was sufficient runway…
- [NTSB SEA95LA188](https://openairdocs.org/ntsb/SEA95LA188.md): Grumman G-164B · Ephrata, WA · Accident · No injuries · Limited investigation · Final report · Jul 28, 1995 · N6774Q · Substantial damage
  > The pilot's inadequate compensation for wind conditions. Factors contributing to the accident were crosswinds and gusts.
- [NTSB SEA94LA191](https://openairdocs.org/ntsb/SEA94LA191.md): Avian Magnum 9 · Pasco, WA · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 1994 · N50257 · No damage
  > A physical impairment that reduced the passenger's ability to hold on to the basket during the hard landing. Factors include an excessive rate of descent at touchdown.
- [NTSB SEA93LA141](https://openairdocs.org/ntsb/SEA93LA141.md): Let Blanik L-13 · Enumclaw, WA · Accident · No injuries · Limited investigation · Final report · Jun 27, 1993 · N82AS · Substantial damage
  > The pilot's failure to attain the proper touchdown point. Factors to the accident were: lack of familiarity with geographic area and the grass.
- [NTSB SEA93LA119](https://openairdocs.org/ntsb/SEA93LA119.md): Applebay Zuni · Deer Park, WA · Accident · No injuries · Limited investigation · Final report · May 23, 1993 · N4321D · Substantial damage
  > Improperly planned approach by the PIC.
- [NTSB SEA93LA095](https://openairdocs.org/ntsb/SEA93LA095.md): Rolladen-Schneider LS4A · Wenatchee, WA · Accident · No injuries · Limited investigation · Final report · Apr 10, 1993 · N7DZ · Substantial damage
  > Misjudged weather evaluation. Factors include high winds encountered on approach.
- [NTSB SEA92LA151](https://openairdocs.org/ntsb/SEA92LA151.md): Berkshire Mfg. Concept 70 · Ephrata, WA · Accident · No injuries · Limited investigation · Final report · Jul 12, 1992 · N382W · Substantial damage
  > Inadequate in-flight planning/decision. Factors to the accident were: no thermal lift and rough/uneven terrain.
- [NTSB SEA92LA118](https://openairdocs.org/ntsb/SEA92LA118.md): I.C.A. Brasov IS-28B2 · Deer Park, WA · Accident · No injuries · Limited investigation · Final report · May 25, 1992 · N28CL · Substantial damage
  > The inadvertent activation of flight spoilers by the pilot and his failure to maintain airspeed, resulting in loss of control during takeoff. A factor relating to the accident was the presence of an irrigation sprinkler that was impacted by the aircraft…
- [NTSB SEA92LA089](https://openairdocs.org/ntsb/SEA92LA089.md): Pilatus B-4 PC 11A · Wenatchee, WA · Accident · 1 fatal · Limited investigation · Final report · May 3, 1992 · N279AS · Destroyed
  > Failure by the pilot to maintain airspeed, resulting in aircraft stall.
- [NTSB SEA87LA071](https://openairdocs.org/ntsb/SEA87LA071.md): Schweizer SGS 2-33A · Issaquah, WA · Accident · No injuries · Limited investigation · Final report · Mar 29, 1987 · N33924 · Substantial damage
  > During a local training flight a downdraft was encountered. At about two miles from the airport the acft was at about 200 feet MSL. The instructor plt decided to land the acft on a field. On short final the acft struck a barbed wire fence prior to touchdown.
- [NTSB SEA86LA199](https://openairdocs.org/ntsb/SEA86LA199.md): Schweizer 2-22EK · Easton, WA · Accident · No injuries · Limited investigation · Final report · Aug 14, 1986 · N2723Z · Substantial damage
  > The instructor pilot was flying the glider with a student in the front seat on a local instructional flight. About 2200 ft down the 2640 foot grass strip, the tow aircraft, at about 50 to 100 feet AGL, lost power and started to descend back to the runway. The…
- [NTSB SEA86FA211](https://openairdocs.org/ntsb/SEA86FA211.md): Schweizer SGS-2-33 · Toledo, WA · Accident · Serious injuries · Field investigation · Final report · Aug 1, 1986 · N5720S · Substantial damage
  > The weak link at the tow vehicle broke during launching. The plt lowered the nose of the acft and turned into the wind. The plt stated that the acft was stalled and that he was unable to stop the descent rate. The acft struck the runway in a slight nose down…
- [NTSB SEA86LA147](https://openairdocs.org/ntsb/SEA86LA147.md): Avian Skyhawk · Yakima, WA · Accident · No injuries · Limited investigation · Final report · Jun 7, 1986 · N7001N · Substantial damage
  > A forced landing was made due to fuel starvation. During the forced landing the balloon struck power lines, severing the basket from the envelope. Sparks from the wire strike caused a small brush fire. Post accident exam revealed the plt inadvertently…
- [NTSB SEA85LA118](https://openairdocs.org/ntsb/SEA85LA118.md): Schweizer SGS 2-33A · Wenatchee, WA · Accident · Minor injuries · Limited investigation · Final report · May 20, 1985 · N65907 · Substantial damage
  > While returning to the arpt to land, the acft encountered strong downdrafts of 600 to 800 fpm. An off arpt landing was made and while turning from base to final, the left wing tip struck the ground. A groundloop then occurred.
- [NTSB SEA84LA159](https://openairdocs.org/ntsb/SEA84LA159.md): Applebay Sailplanes Zuni II · Ephrata, WA · Accident · No injuries · Limited investigation · Final report · Jul 3, 1984 · N22HL · 2 aircraft · Substantial damage
  > The two gliders collided while thermaling in vicinity of each other while engaged in a contest. According to the plts they lost sight of each other while spiraling in the lift. Both acft landed safely. The collision was nose to tail.
- [NTSB SEA84LA144](https://openairdocs.org/ntsb/SEA84LA144.md): Balloon Works Barnes AX-8 · Monroe, WA · Accident · Serious injuries · Limited investigation · Final report · Jun 24, 1984 · N1509H · No damage
  > During the ballon descent, the plt said he briefed the passengers to bend their knees & hold onto something inside the basket. According to the plt, the descent became more rapid due to a downdraft. The passengers were again warned to 'hang on' because it…
- [NTSB SEA84LA080](https://openairdocs.org/ntsb/SEA84LA080.md): Schweizer SGS1-26C · Mount Vernon, WA · Accident · No injuries · Limited investigation · Final report · Apr 8, 1984 · N4450N · Destroyed
  > The sailplane encountered deteridrating thermals & elected to make an off airport landing as he did not think he could reach the airport. He overshot the selected field in his attempt to miss some wires at the apch end of the field despitethe use of spoilers…
- [NTSB SEA84LA046](https://openairdocs.org/ntsb/SEA84LA046.md): Lark IS28B2 · Issaquqh, WA · Accident · No injuries · Limited investigation · Final report · Jan 29, 1984 · N4014B · Substantial damage
  > The CFI stated that while returnsing to the airport he encountered turbulence. When it became obvious that reaching the intended airport would be marginal another landing field was chosen. During turn to final, the left wing tip struck a power pole and the…
- [NTSB SEA82FYP08](https://openairdocs.org/ntsb/SEA82FYP08.md): Lark IS28B2 · Springdale, WA · Accident · Serious injuries · Final report · Jul 11, 1982 · N9255Z · Destroyed
  > The pilot received an aerial tow to 5000 feet and was able to find lifting currents for approximately 1.5 hours. Unable to obtain adequate lift the pilot decided to attempt an off airport landing on a dirt road crossing a wheat field. At an altitude of…
- [NTSB SEA81FA025](https://openairdocs.org/ntsb/SEA81FA025.md): Schweizer SGS126 · Arlington, WA · Accident · 1 fatal · Closed · Mar 21, 1981 · N9866E · Destroyed
- [NTSB SEA80DYE41](https://openairdocs.org/ntsb/SEA80DYE41.md): Schweizer SGS126 · Issaquah, WA · Accident · No injuries · Closed · Jun 19, 1980 · N65952 · Substantial damage
- [NTSB SEA79FA005](https://openairdocs.org/ntsb/SEA79FA005.md): Rolladn SCH LS-1-F · Ephrata, WA · Accident · 5 fatal · Closed · Oct 21, 1978 · N61MP · 2 aircraft · Destroyed
- [NTSB SEA78DYE35](https://openairdocs.org/ntsb/SEA78DYE35.md): Let-Np-K L-13 · Issaquah, WA · Accident · No injuries · Closed · Aug 13, 1978 · N9244Z · Substantial damage

Next page: https://openairdocs.org/ntsb.md?engine=00000&state=WA&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" = 'WA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('00000'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=00000&state=WA

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