# NTSB investigations: Burkhart Grob G 103 TWIN II

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 WPR21LA290](https://openairdocs.org/ntsb/WPR21LA290.md): Burkhart Grob G 103 Twin II · Levan, UT · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 25, 2021 · N4446Y · Substantial damage
  > The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight which resulted in an off-airport landing and a collision with a fence.
- [NTSB GAA19CA506](https://openairdocs.org/ntsb/GAA19CA506.md): Grob G103 · San Antonio, TX · Accident · No injuries · Data collection · Final report · Aug 22, 2019 · N901BG · Substantial damage
  > The failure of the glider tow rope, which lodged in the glider's rudder and resulted in a hard landing. Contributing to the accident was the pilot's failure to properly secure the glider's aft canopy.
- [NTSB WPR14CA063](https://openairdocs.org/ntsb/WPR14CA063.md): Burkhart Grob G 103 Twin II · Bryon, CA · Accident · No injuries · Data collection · Final report · Dec 8, 2013 · N3981C · Substantial damage
  > The pilot's failure to maintain adequate wing clearance from a runway sign while taxiing.
- [NTSB WPR13CA418](https://openairdocs.org/ntsb/WPR13CA418.md): Grob G 103 Twin II · Morgan, UT · Accident · No injuries · Data collection · Final report · Sep 21, 2013 · N54554 · Substantial damage
  > An incorrect descent rate while on final approach as a result of the flight instructor's delayed remedial action, which lead to an off-field landing and impact with terrain.
- [NTSB ERA12LA455](https://openairdocs.org/ntsb/ERA12LA455.md): Burkhart Grob G 103 Twin II · Hilltown, PA · Accident · Serious injuries · Limited investigation · Final report · Jul 13, 2012 · N5448G · Substantial damage
  > The improper decision of the flight instructor receiving instruction to attempt a course reversal rather than land straight ahead following a simulated low-level rope break, and the inadequate remedial action of the flight instructor-in-command for allowing…
- [NTSB CEN09CA368](https://openairdocs.org/ntsb/CEN09CA368.md): Grob G103 · Wellington, CO · Accident · No injuries · Data collection · Final report · Jun 19, 2009 · N5462N · Substantial damage
  > The pilot’s failure to maintain control of the glider during takeoff.
- [NTSB NYC08CA025](https://openairdocs.org/ntsb/NYC08CA025.md): Burkhart Grob G 103 Twin II · Windham, NY · Accident · Serious injuries · Data collection · Final report · Nov 4, 2007 · N46009 · Substantial damage
  > An inadvertent encounter with a wind gust while maneuvering.
- [NTSB LAX07CA154](https://openairdocs.org/ntsb/LAX07CA154.md): Burkhart Grob G103 Twin II · Minden, NV · Accident · Minor injuries · Data collection · Final report · May 10, 2007 · N49443 · Substantial damage
  > The pilot's failure to maintain an adequate airspeed, which led to an inadvertent stall.
- [NTSB LAX06CA081](https://openairdocs.org/ntsb/LAX06CA081.md): Burkhart Grob G 103 Twin II · Llano, CA · Accident · No injuries · Data collection · Final report · Dec 3, 2005 · N4601M · Substantial damage
  > The flight's encounter with downdrafts. A contributing factor was the unsuitable vegetation-covered mountainous terrain.
- [NTSB LAX01LA249](https://openairdocs.org/ntsb/LAX01LA249.md): Burkhart Grob G 103 Twin II · Minden, NV · Accident · No injuries · Limited investigation · Final report · Jul 16, 2001 · N4805R · Substantial damage
  > The student pilot's early deployment of full spoilers, resulting in an excessive sink rate and subsequent hard landing. A factor was the instructor's lack of time to take remedial action.
- [NTSB CHI01LA207](https://openairdocs.org/ntsb/CHI01LA207.md): Burkhart Grob G 103 Twin II · Ionia, MI · Accident · No injuries · Limited investigation · Final report · Jul 12, 2001 · N140BG · Substantial damage
  > The pilot not maintaining clearance from the tall grass during his recovery from the bounced landing. A factor was the tall grass.
- [NTSB LAX99LA285](https://openairdocs.org/ntsb/LAX99LA285.md): Burkhart Grob G 103 Twin II · Llano, CA · Accident · No injuries · Limited investigation · Final report · Aug 23, 1999 · N8013K · Substantial damage
  > The pilot's encounter with a sudden and violent dust devil, which caused the student pilot to lose control of the aircraft during the landing flare/touchdown.
- [NTSB IAD99FA041](https://openairdocs.org/ntsb/IAD99FA041.md): Cessna 305A · Hilltown, PA · Accident · 3 fatal · Field investigation · Final report · May 1, 1999 · N5171G · 2 aircraft · Destroyed
  > The inadequate lookout of both pilots, and the pilot of the other aircraft.
- [NTSB NYC99LA017](https://openairdocs.org/ntsb/NYC99LA017.md): Burkhart Grob G103-TWINA · Saratoga Spring, NY · Accident · No injuries · Limited investigation · Final report · Oct 24, 1998 · N4446T · Substantial damage
  > The pilot's failure to maintain control of the glider while landing.
- [NTSB FTW98LA301](https://openairdocs.org/ntsb/FTW98LA301.md): Burkhart Grob G103 Twin II · Refugio, TX · Accident · No injuries · Limited investigation · Final report · Jul 5, 1998 · N103GG · Substantial damage
  > The pilot's inadvertent ground loop. A factor was the pilot's failure to follow procedures in securing the rear canopy, which resulted in the canopy opening in flight.
- [NTSB ATL98LA079](https://openairdocs.org/ntsb/ATL98LA079.md): Burkhart Grob G-103 · Cordele, GA · Accident · No injuries · Limited investigation · Final report · May 24, 1998 · N5448G · Substantial damage
  > The pilot's improper descent rate that led to a hard landing and porpoise, and his improper recovery from the ensuing bounced landing, resulting in the eventual separation of the empennage. A factor was the updraft.
- [NTSB LAX97LA227](https://openairdocs.org/ntsb/LAX97LA227.md): Burkhart Grob G-103-TWIN II · Jacumba, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 30, 1997 · N18AG · Substantial damage
  > The pilot's abrupt rotation, which resulted in the breaking of the tow rope. A factor was the low altitude when the tow rope broke, precluding a landing on the runway.
- [NTSB LAX95LA050](https://openairdocs.org/ntsb/LAX95LA050.md): Burkhart Grob G-103 · Tehachapi, CA · Accident · No injuries · Limited investigation · Final report · Dec 11, 1994 · N3950A · Substantial damage
  > the pilot's poor in-flight planning/decision and inadequate airspeed. The downdraft and trees were factors in this accident.
- [NTSB FTW94LA196](https://openairdocs.org/ntsb/FTW94LA196.md): Burkhart Grob G 103 Twin II · Wellington, CO · Accident · No injuries · Limited investigation · Final report · Jun 5, 1994 · N5462N · Substantial damage
  > The pilot's improper spoiler extension and flare.
- [NTSB CHI94LA165](https://openairdocs.org/ntsb/CHI94LA165.md): Burkhart Grob BG 103 · Ionia, MI · Accident · No injuries · Limited investigation · Final report · May 20, 1994 · N140BG · Substantial damage
  > a hard landing as a result of the early disconnect of the glider launch/tow equipment.
- [NTSB LAX92LA343](https://openairdocs.org/ntsb/LAX92LA343.md): Burkhart Grob 103 · Truckee, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 10, 1992 · N103FB · Substantial damage
  > The inadequate aircraft maintenance and flight manuals and unavailable information pertaining to the inspection of the spoiler system. Contributing to this accident was the worn and jammed spoiler attachment limiting block.
- [NTSB CHI92LA143](https://openairdocs.org/ntsb/CHI92LA143.md): Burkhart Grob G-103 · Ionia, MI · Accident · No injuries · Limited investigation · Final report · May 10, 1992 · N140BG · Substantial damage
  > The pilot-in-command's improper preflight and decision to close the glider's canopy at low altitude.
- [NTSB NYC91LA225](https://openairdocs.org/ntsb/NYC91LA225.md): Burkhart Grob G103B · Marion, OH · Accident · No injuries · Limited investigation · Final report · Jul 17, 1991 · N5448X · Substantial damage
  > The pilot's improper decision to change landing runways with insufficient altitude and airspeed which resulted in a dragged wing and ground loop.
- [NTSB NYC88LA161](https://openairdocs.org/ntsb/NYC88LA161.md): Burkhart Grob G-103A · Franconia, NH · Accident · No injuries · Limited investigation · Final report · Jun 5, 1988 · N49443 · Substantial damage
  > During takeoff, turbulence was encountered and the student pilot had a hard time controlling the glider. As the instructor took control, the student released the tow rope. The instructor pushed the nose down and turned in an attempt to level the wings, but…
- [NTSB LAX87LA006](https://openairdocs.org/ntsb/LAX87LA006.md): Burkhart Grob G103 Twin II · Calistoga, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 4, 1986 · N914G · Substantial damage
  > At the end of a local pleasure flight near clistoga, claifornia, the pilot stated the nose of his glider was pushed down while on base leg at calistaga airpark. Due to a loss in altitude to increase airspeed, the pilot was unable to reach the runway. A forced…
- [NTSB NYC86DNC01](https://openairdocs.org/ntsb/NYC86DNC01.md): Burkhart Grob 103 · Franconia, NH · Accident · Minor injuries · Final report · Oct 12, 1985 · N4944G · Substantial damage
  > The pilot flying a grob 103 was engaged in ridge soaring when the aircraft encountered down or sinking air. The aircraft was unable to recover prior to striking trees. The aircraft received substantial damage and the pilot received serious injuries while the…
- [NTSB LAX84LA076](https://openairdocs.org/ntsb/LAX84LA076.md): Burkhart Grob G-103 · California City, CA · Accident · Serious injuries · Limited investigation · Final report · Nov 27, 1983 · N62BG · Substantial damage
  > According to the plt, he was turning to final approach when the glider's left wing struck the ground. Reportedly, he had gotten 'too low & slow.'

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1660203'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1660203

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