# NTSB investigations: Gates Learjet 35A: Loss of control - in flight

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 LAX06FA071](https://openairdocs.org/ntsb/LAX06FA071.md): Learjet 35A · Truckee, CA · Accident · 2 fatal · Field investigation · Final report · Dec 28, 2005 · N781RS · Destroyed
  > The pilot's inadequate compensation for the gusty crosswind condition and failure to maintain an adequate airspeed while maneuvering in a steep turn close to the ground.
- [NTSB NYC04LA088](https://openairdocs.org/ntsb/NYC04LA088.md): Gates Learjet 35A · Utica, NY · Accident · No injuries · Limited investigation · Final report · Mar 19, 2004 · N800AW · Substantial damage
  > The copilot's failure to maintain airspeed, and the captain's delayed remedial action, which resulted in an inadvertent stall and the subsequent hard landing.
- [NTSB SEA97LA109](https://openairdocs.org/ntsb/SEA97LA109.md): Learjet 35A · Great Falls, MT · Accident · Minor injuries · Limited investigation · Final report · May 16, 1997 · N1AH · Substantial damage
  > the captain's inadequate preflight planning/preparation, and the subsequent improper response to a simulated loss of engine power, resulting in liftoff at an airspeed below that for which sustained flight was possible.
- [NTSB DEN91FA043](https://openairdocs.org/ntsb/DEN91FA043.md): Learjet 35A · Aspen, CO · Accident · 3 fatal · Field investigation · Final report · Feb 14, 1991 · N535PC · Destroyed
  > The flight crew's failure to maintain airspeed and control of the airplane while maneuvering to land. Contributing factors were the flight crew's execution of an unstabilized approach and the surrounding snow-covered mountainous terrain.
- [NTSB MKC88MA134](https://openairdocs.org/ntsb/MKC88MA134.md): Learjet 35A · Morristown, NJ · Accident · 1 fatal · Major investigation · Final report · Jul 26, 1988 · N442NE · Destroyed
  > The crew was positioning the aircraft in preparation for a revenue flight and executing a non-directional beacon (NDB) apch to rwy 05. The captain reported that the copilot was flying the acft. However, the capt stated that he took controlof the acft during…
- [NTSB DCA87MA031](https://openairdocs.org/ntsb/DCA87MA031.md): Learjet 35A · West Mifflin, PA · Accident · 2 fatal · Major investigation · Final report · May 12, 1987 · N100EP · Destroyed
  > The coplt (dual student) was to get a prof check on the 1st leg of the flt with a simulated single eng pwr loss on tkof. According to witnesses, the tkof was normal until lift-off aprx 3200' down the rwy; but after lift-off, the acft clbd only about 50' &…

## 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 ('5170602')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 250))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=5170602&occurrence=250

---
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.