# NTSB investigations, UT: Loss of lift

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 WPR24LA216](https://openairdocs.org/ntsb/WPR24LA216.md): Alexander Schleicher ASH 31 MI · Parowan, UT · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 24, 2024 · N517PB · Substantial damage
  > The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain?flight.
- [NTSB WPR23LA204](https://openairdocs.org/ntsb/WPR23LA204.md): Cessna 175A · Enterprise, UT · Accident · No injuries · Class 4 · Limited · Final report · May 28, 2023 · N5089 · Substantial damage
  > The pilot’s inability to maintain altitude during an initial climbout in mountainous terrain after encountering a suspected downdraft.
- [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 GAA20CA032](https://openairdocs.org/ntsb/GAA20CA032.md): Flight Design Ctls · Monument Valley, UT · Accident · Minor injuries · Data collection · Final report · Oct 17, 2019 · N771TX · Substantial damage
  > The pilot's failure to maintain lateral control and to attain adequate altitude during takeoff with a quartering tailwind in gusting wind conditions, which resulted in impact with a sandy berm left of the runway.
- [NTSB GAA18CA377](https://openairdocs.org/ntsb/GAA18CA377.md): Jonker Sailplanes JS1-C · Panguitch, UT · Accident · No injuries · Data collection · Final report · Jun 24, 2018 · N963CG · Substantial damage
  > The pilot’s inability to maintain altitude and his delayed decision to deploy the powered-glider’s engine, which necessitated an off-airport landing.
- [NTSB GAA18CA314](https://openairdocs.org/ntsb/GAA18CA314.md): Schleicher ASW · Nephi, UT · Accident · No injuries · Data collection · Final report · May 30, 2018 · N428US · Substantial damage
  > The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight, which resulted in a hard off-airport landing.
- [NTSB WPR16LA114](https://openairdocs.org/ntsb/WPR16LA114.md): Michael Burton Calidus · Fruitland, UT · Accident · Serious injuries · Limited investigation · Final report · May 20, 2016 · N50NE · Substantial damage
  > The pilot's improper judgment in conducting a flight in a gyroplane over mountainous terrain near its demonstrated maximum operating altitude and his subsequent failure to maintain adequate clearance with terrain during cruise flight in turbulent weather…
- [NTSB WPR15LA232](https://openairdocs.org/ntsb/WPR15LA232.md): Schleicher ASW 20B · Logan, UT · Accident · Serious injuries · Limited investigation · Final report · Aug 2, 2015 · N20YZ · Substantial damage
  > The pilot’s failure to maintain glider control when it encountered a strong downdraft while maneuvering near a ridgeline.
- [NTSB WPR14CA228](https://openairdocs.org/ntsb/WPR14CA228.md): Piper PA 18A 150 · Leeds, UT · Accident · No injuries · Data collection · Final report · Jun 4, 2014 · N1672P · Substantial damage
  > The pilot's failure to confirm the flaps had been retracted during takeoff, which resulted in a loss of lift and subsequent collision with terrain.
- [NTSB WPR13LA315](https://openairdocs.org/ntsb/WPR13LA315.md): Robinson Helicopter R22 · Alta, UT · Accident · Minor injuries · Limited investigation · Final report · Jul 8, 2013 · N712U · Destroyed
  > The flight instructor's decision to follow a route over mountainous terrain in conditions that exceeded the helicopter’s ability to maintain terrain clearance.
- [NTSB WPR13LA295](https://openairdocs.org/ntsb/WPR13LA295.md): Robinson Helicopter R44 · Fielding, UT · Accident · No injuries · Limited investigation · Final report · Jun 28, 2013 · N7187B · Substantial damage
  > The pilot's failure to maintain rotor rpm while traversing a canyon in high-density altitude and gusting wind conditions.
- [NTSB WPR13CA068](https://openairdocs.org/ntsb/WPR13CA068.md): Robinson R22 · Logan, UT · Accident · No injuries · Data collection · Final report · Dec 15, 2012 · N393LE · Substantial damage
  > The flight instructor’s delayed remedial action and inadequate supervision during a practice autorotation, which resulted in a failure to maintain adequate main rotor rpm. Contributing to the accident was the wet landing surface.
- [NTSB WPR13FA061](https://openairdocs.org/ntsb/WPR13FA061.md): Piper PA28 · Aurora, UT · Accident · 3 fatal · Field investigation · Final report · Nov 25, 2012 · N8314E · Substantial damage
  > The pilot's failure to maintain clearance with terrain while maneuvering in a remote mountainous region. Contributing to the accident was the pilot's improper decision to traverse the remote mountainous area in high-density altitude conditions with the…
- [NTSB WPR12CA351](https://openairdocs.org/ntsb/WPR12CA351.md): Robinson R22 · Monticello, UT · Accident · Minor injuries · Data collection · Final report · Aug 11, 2012 · N7135J · Substantial damage
  > The pilot's failure to maintain adequate main rotor rpm while maneuvering at a low altitude, which resulted in the helicopter settling and subsequently colliding with the ground. Contributing to the accident was that the pilot had insufficient altitude to…
- [NTSB WPR11CA486](https://openairdocs.org/ntsb/WPR11CA486.md): Schleicher ASW-27 · Brigham City, UT · Accident · No injuries · Data collection · Final report · Jul 19, 2011 · N797V · Substantial damage
  > The glider pilot did not take timely action to locate a safe outlanding area after entering an area where atmospheric lift was not sufficient to maintain soaring flight.
- [NTSB WPR11LA013](https://openairdocs.org/ntsb/WPR11LA013.md): Beech C24 · Blanding, UT · Accident · No injuries · Limited investigation · Final report · Oct 10, 2010 · N5063M · Substantial damage
  > The pilot’s failure to attain a climb gradient sufficient to clear the rising terrain, which resulted in his decision to make a forced landing on a road.
- [NTSB WPR10LA356](https://openairdocs.org/ntsb/WPR10LA356.md): Parker RS-15 Sailplane · Marysvale, UT · Accident · 1 fatal · Limited investigation · Final report · Jul 17, 2010 · N15LQ · Substantial damage
  > The glider's encounter with insufficient atmospheric lift to maintain soaring flight.

## 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" = 'UT' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '500' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/500/sequence?state=UT

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