# NTSB investigations: NONE, 1991

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.

## Latest cases

- [NTSB DEN92LA021](https://openairdocs.org/ntsb/DEN92LA021.md): Cameron V-77 · Littleton, CO · Accident · Minor injuries · Limited investigation · Final report · Dec 28, 1991 · N9517P · Substantial damage
  > The pilot's improper landing procedure, including wrong compensation for wind conditions and improper use of the envelope dump control. A factor was: high wind.
- [NTSB CHI92DEV01](https://openairdocs.org/ntsb/CHI92DEV01.md): Quickie Quickie 1 · Carmi, IL · Accident · Serious injuries · Final report · Dec 11, 1991 · N1V · Substantial damage
  > An engine bearing seizure and a premature forced landing flare.
- [NTSB MIA92LA028](https://openairdocs.org/ntsb/MIA92LA028.md): Schweizer SGS 2-33A · Groveland, FL · Accident · No injuries · Limited investigation · Final report · Nov 14, 1991 · N2890H · Substantial damage
  > Poor in-flight planning/decision by the pilot-in-command resulting in the off airport landing. Contributing to the accident was his lack of total experience.
- [NTSB BFO92LA003](https://openairdocs.org/ntsb/BFO92LA003.md): Schweizer SGS 2-33A · Waynesboro, VA · Accident · Minor injuries · Limited investigation · Final report · Oct 26, 1991 · N34396 · Substantial damage
  > Improper in-flight planning/decision by the instructor (CFI). Contributing to the accident was the instructor's failure to properly monitor the student's performance.
- [NTSB NYC92LA014](https://openairdocs.org/ntsb/NYC92LA014.md): Aerostar Raven S-60 · Trenton, NJ · Accident · Serious injuries · Limited investigation · Final report · Oct 20, 1991 · N4057H · No damage
  > Excessive descent rate by the pilot in command. A factor was overloading of the basket.
- [NTSB LAX92LA021](https://openairdocs.org/ntsb/LAX92LA021.md): Schweizer SGS-2-33A · Fremont, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 20, 1991 · N17886 · Destroyed
  > The pilot's inadequate altitude on final approach.
- [NTSB CHI92LA096](https://openairdocs.org/ntsb/CHI92LA096.md): Cameron N120 · Goshen, IN · Accident · Serious injuries · Limited investigation · Final report · Oct 19, 1991 · N6092K · No damage
  > An improper touchdown by the pilot in command.
- [NTSB NYC92LA013](https://openairdocs.org/ntsb/NYC92LA013.md): I.C.A. Brasov Lark I-28-B2 · Blairstown, NJ · Accident · No injuries · Limited investigation · Final report · Oct 18, 1991 · N350BB · Substantial damage
  > An improperly planned approach which resulted in an inadvertent stall with insufficient altitude for recovery. A factor related to the accident was improper use of the flight controls by the pilot.
- [NTSB ATL92LA007](https://openairdocs.org/ntsb/ATL92LA007.md): Kaman HH-43B/F · Mt. Vernon, AL · Accident · No injuries · Limited investigation · Final report · Oct 14, 1991 · N55714 · Substantial damage
  > A loss of engine power for undetermined reasons. A factor in the accident was the lack of a suitable landing site.
- [NTSB LAX91LA408](https://openairdocs.org/ntsb/LAX91LA408.md): Burkhart Grob G103 · Fremont, CA · Accident · No injuries · Limited investigation · Final report · Sep 26, 1991 · N4113G · Substantial damage
  > The pilot failed to adequately compensate for the prevailing wind conditions.
- [NTSB MIA91LA223](https://openairdocs.org/ntsb/MIA91LA223.md): Centrair 101A · Groveland, FL · Accident · No injuries · Limited investigation · Final report · Sep 21, 1991 · N93KG · Substantial damage
  > The pilot in command's poor in flight decision planning, and inadvertent stall mush while on approach to land. Contributing to the accident was his lack of total experience.
- [NTSB DEN91LA137](https://openairdocs.org/ntsb/DEN91LA137.md): Raven Ralley RX7 · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Sep 21, 1991 · N4036Y · Substantial damage
  > A hard landing and inadvertent deployment of the balloon heater. A factor was: inadvertent entanglement of a load cable with the heater activation device.
- [NTSB FTW91LA161](https://openairdocs.org/ntsb/FTW91LA161.md): Barnes AX 7 · Baytown, TX · Accident · Serious injuries · Limited investigation · Final report · Sep 15, 1991 · N5182U · No damage
  > The crewmembers improper posture during landing which led to a serious injury.
- [NTSB CHI91LA292](https://openairdocs.org/ntsb/CHI91LA292.md): Balloon Works Firefly X-7 · Altoona, IA · Accident · Serious injuries · Limited investigation · Final report · Sep 7, 1991 · N4055T · No damage
  > Weather evaluation misjudged and overconfidence in personal ability. A factor related to the accident was high winds.
- [NTSB LAX91LA378](https://openairdocs.org/ntsb/LAX91LA378.md): Schempp-Hirth VENTUS-B · Mojave, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 31, 1991 · N901DH · Destroyed
  > The glider pilot's inadequate altitude to clear terrain. Factors which related to the pilot being low could not be established because the pilot had no memory of the accident, and no witnesses were identified who observed the glider other than during its…
- [NTSB DEN91LA118](https://openairdocs.org/ntsb/DEN91LA118.md): Let L-13 · Aspen, CO · Accident · No injuries · Limited investigation · Final report · Aug 25, 1991 · N2238 · Substantial damage
  > The pilot turning off the runway with excessive speed.
- [NTSB NYC91LA209](https://openairdocs.org/ntsb/NYC91LA209.md): Cameron V-77 · New Middletown, OH · Accident · Serious injuries · Limited investigation · Final report · Aug 7, 1991 · N6044U · Minor damage
  > The unfavorable wind (shift) encountered by the balloon during the initial takeoff climb.
- [NTSB LAX91LA349](https://openairdocs.org/ntsb/LAX91LA349.md): Let L-13 · Byron, CA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1991 · N53AS · Substantial damage
  > The on ground collision with a hidden ditch not visible to the pilot during the landing roll out phase of a forced landing.
- [NTSB CHI91LA244](https://openairdocs.org/ntsb/CHI91LA244.md): Aerostar Raven 557A · Indianola, IA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1991 · N3621X · Substantial damage
  > Failure of the pilot to maintain altitude. Factors associated with the accident are complacency and diverted attention.
- [NTSB FTW91LA136](https://openairdocs.org/ntsb/FTW91LA136.md): Raven RX7 · Gonzales, LA · Accident · Serious injuries · Limited investigation · Final report · Jul 28, 1991 · N2801F · Minor damage
  > Unfavorable winds at low altitude. A factor was the electrical power lines.
- [NTSB CHI91LA231](https://openairdocs.org/ntsb/CHI91LA231.md): Let L-13 · Gregory, MI · Accident · No injuries · Limited investigation · Final report · Jul 26, 1991 · N781BA · Substantial damage
  > A collision with wires after the glider overshot the landing area due to inadvertent lowering of the flaps and no use of spoilers.
- [NTSB CHI91LA219](https://openairdocs.org/ntsb/CHI91LA219.md): Schweizer 2-32 · Plainfield, IL · Accident · No injuries · Limited investigation · Final report · Jul 16, 1991 · N2477W · Substantial damage
  > Pilot's failure to attain proper alignment with the runway. A factor related to the accident was the high vegetation/crop in which the landing was made.
- [NTSB CHI91FA212](https://openairdocs.org/ntsb/CHI91FA212.md): Centrair Pegasus 101B · Hinckley, IL · Accident · Serious injuries · Field investigation · Final report · Jul 7, 1991 · N126CC · 2 aircraft · Substantial damage
  > The failure of both pilots to maintain adequate visual lookout and ensure adequate separation during traffic pattern operations. A related factor is the non-standard uncontrolled airport procedures used by N126CC.
- [NTSB SEA91LA147](https://openairdocs.org/ntsb/SEA91LA147.md): Let L-13 · Driggs, ID · Accident · No injuries · Limited investigation · Final report · Jul 1, 1991 · N711KR · Substantial damage
  > The pilot misjudged his distance and altitude to the runway during the approach and failed to attain the proper touchdown point for landing. His lack of experience in the make and model of glider was a related factor.
- [NTSB FTW91LA119](https://openairdocs.org/ntsb/FTW91LA119.md): Rolladen-Schneider LS-6 · Boerne, TX · Accident · No injuries · Limited investigation · Final report · Jun 22, 1991 · N6MN · Substantial damage
  > The pilot's failure to release at a higher altitude prior to looking for thermal activity and the pilot's poor in-flight planning. Factors were the downdraft and the tall grass encountered during landing.
- [NTSB DEN91FA083](https://openairdocs.org/ntsb/DEN91FA083.md): Schempp-Hirth Ventus C · Durango, CO · Accident · 1 fatal · Field investigation · Final report · Jun 13, 1991 · N418CH · Destroyed
  > The absence of thermal lift, the pilot's apprehension, and his lack of familiarity with the geographic area.
- [NTSB CHI91LA188](https://openairdocs.org/ntsb/CHI91LA188.md): Schweizer SGS 1-34 · Highland, IL · Accident · No injuries · Limited investigation · Final report · Jun 12, 1991 · N7634 · Substantial damage
  > The pilot misjudged his touchdown point.
- [NTSB CHI91LA183](https://openairdocs.org/ntsb/CHI91LA183.md): Balloon Works FIREFLY-7B · Greenwood, MO · Accident · 1 fatal · Limited investigation · Final report · Jun 9, 1991 · N3605G · Minor damage
  > The inadequate briefing to the ground crew by the pilot, because the ground crewman did not understand the intent and objectives of the maneuver.
- [NTSB ATL91LA106](https://openairdocs.org/ntsb/ATL91LA106.md): Glaser-Dirks DG-200 · Marshallville, GA · Accident · Minor injuries · Limited investigation · Final report · Jun 4, 1991 · N202DG · Destroyed
  > The pilot's failure to maintain airspeed and the inadvertent stall/spin. A factor was the loss of thermal lifting action.
- [NTSB FTW91FA085](https://openairdocs.org/ntsb/FTW91FA085.md): Piper J3C-65 · Claremore, OK · Accident · 2 fatal · Field investigation · Final report · May 25, 1991 · N3609K · Destroyed
  > The instructor pilot (PIC) did not maintain clearance from obstacles during the maneuver.
- [NTSB LAX91LA211](https://openairdocs.org/ntsb/LAX91LA211.md): Glasflugel Mosquito · Pearblossom, CA · Accident · 1 fatal · Limited investigation · Final report · May 12, 1991 · N210TD · Destroyed
  > The failure of the pilot to maintain adequate airspeed to avoid stalling the aircraft.
- [NTSB LAX91LA231](https://openairdocs.org/ntsb/LAX91LA231.md): Schleicher ASW-20 · Julian, CA · Accident · No injuries · Limited investigation · Final report · Apr 7, 1991 · N31AP · Substantial damage
  > The pilot's failure to maintain control of his experimental glider during takeoff. A contributing factor was the pilot's encounter with gusty winds.
- [NTSB LAX91LA163](https://openairdocs.org/ntsb/LAX91LA163.md): Schempp-Hirth Ventus B/16.6 · Lake Cobb, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 7, 1991 · N81PT · Substantial damage
  > That the pilot's visual lookout was improper. Contributing to this accident was the unmarked transmission wire.
- [NTSB LAX91LA155](https://openairdocs.org/ntsb/LAX91LA155.md): Schweizer SGS1-26-D · Warner Springs, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 2, 1991 · N7562 · Destroyed
  > That the pilot used poor planning/decision and failed to maintain flying speed. Contributing to his accident was the loss of thermal lift and lack of experience in this type of aircraft.
- [NTSB BFO91LA034](https://openairdocs.org/ntsb/BFO91LA034.md): Schweizer SGS 2-33 · Buchanan, VA · Accident · Serious injuries · Limited investigation · Final report · Mar 24, 1991 · N2451W · Substantial damage
  > The pilot's decision to attempt the takeoff with unfavorable winds.
- [NTSB DEN91LA040](https://openairdocs.org/ntsb/DEN91LA040.md): Aerostar RX7 · Durango, CO · Accident · No injuries · Limited investigation · Final report · Feb 2, 1991 · N35773 · Substantial damage
  > The pilot's failure to maintain obstacle clearance. Factors were: the unfavorable winds and the high obstructions in the flight path.
- [NTSB NYC91LA066](https://openairdocs.org/ntsb/NYC91LA066.md): Schweizer SGS 2-33A · Williamstown, MA · Accident · No injuries · Limited investigation · Final report · Jan 26, 1991 · N5763S · Substantial damage
  > The failure of the pilot to retract the speed brakes during the preflight, which resulted in the tow airplane being unable to attain sufficient altitude prior to releasing the glider, and the subsequent landing of the glider on unsuitable terrain.

## 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") = 1991
  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&year=1991

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