# NTSB investigations: Pratt & Whitney PT6A series, 2013

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 WPR14FA068](https://openairdocs.org/ntsb/WPR14FA068.md): Cessna 208B · Kalaupapa, HI · Accident · 1 fatal · Field investigation · Final report · Dec 12, 2013 · N687MA · Destroyed
  > The loss of engine power due to the fracture of multiple blades on the compressor turbine wheel, which resulted in a ditching. The reason for the blade failures could not be determined due to secondary thermal damage to the blades.
- [NTSB ANC14MA008](https://openairdocs.org/ntsb/ANC14MA008.md): Cessna 208B · Saint Marys, AK · Accident · 5 fatal · Major investigation · Final report · Nov 30, 2013 · N12373 · Substantial damage
  > The pilot's decision to initiate a visual flight rules approach into an area of instrument meteorological conditions at night and the flight coordinators' release of the flight without discussing the risks with the pilot, which resulted in the pilot…
- [NTSB ERA14LA071](https://openairdocs.org/ntsb/ERA14LA071.md): Piper PA-46-500TP · Monroe, NC · Accident · No injuries · Limited investigation · Final report · Nov 24, 2013 · N4185L · Substantial damage
  > The pilot’s operation of the airplane with underinflated tires, which resulted in the right tire’s failure during takeoff and a subsequent runway excursion.
- [NTSB WPR14FA024](https://openairdocs.org/ntsb/WPR14FA024.md): Cessna 208 · Wailea, HI · Accident · No injuries · Field investigation · Final report · Oct 22, 2013 · N861MA · Substantial damage
  > Improper maintenance that resulted in contamination of the engine's compressor turbine disc and blade assembly by glass bead remnants, which resulted in a blade failure.
- [NTSB DCA13FA148](https://openairdocs.org/ntsb/DCA13FA148.md): Beech 1900D · Telluride, CO · Accident · No injuries · Field investigation · Final report · Sep 1, 2013 · N169GL · Substantial damage
  > Failure of the left main landing gear actuator internal lock to engage in the locked position for undetermined reasons.
- [NTSB CEN13LA568](https://openairdocs.org/ntsb/CEN13LA568.md): Air Tractor AT 802 · Gould, AR · Accident · No injuries · Limited investigation · Final report · Aug 28, 2013 · N9119B · Substantial damage
  > The failure of a bearing in the fuel control unit, which resulted in fuel starvation and a total loss of engine power.
- [NTSB CEN13LA421](https://openairdocs.org/ntsb/CEN13LA421.md): Cessna 208B · Chicago, IL · Accident · No injuries · Limited investigation · Final report · Jul 17, 2013 · N732MD · Substantial damage
  > The gate agent’s premature removal of the tailstand without confirming with the flight crew that it was safe to remove, which allowed the airplane to tilt backward when a passenger stood up and stepped toward the back of the airplane.
- [NTSB CEN13LA473](https://openairdocs.org/ntsb/CEN13LA473.md): Air Tractor AT-502B · Nauvoo, IL · Accident · No injuries · Limited investigation · Final report · Jul 15, 2013 · N6113C · Substantial damage
  > A fatigue failure of an engine compressor turbine blade, which resulted in extensive secondary engine damage and a complete loss of engine power.
- [NTSB CEN13LA414](https://openairdocs.org/ntsb/CEN13LA414.md): Ayres S2R-T41 · Coy, AR · Accident · Minor injuries · Limited investigation · Final report · Jul 10, 2013 · N2239B · Substantial damage
  > The propeller’s uncommanded reverse thrust during the landing flare due to improper rigging of the propeller’s governor linkage.
- [NTSB CEN13LA402](https://openairdocs.org/ntsb/CEN13LA402.md): Air Tractor AT-502B · Tillar, AR · Accident · No injuries · Limited investigation · Final report · Jul 3, 2013 · N5182C · Substantial damage
  > The loss of engine throttle control during takeoff due to an unsecured cockpit throttle control pin, which resulted in a runway overrun.
- [NTSB CEN13LA371](https://openairdocs.org/ntsb/CEN13LA371.md): Air Tractor AT-502B · Campbell, NE · Accident · No injuries · Limited investigation · Final report · Jun 23, 2013 · N6017E · Substantial damage
  > The pilot's decision to continue with the takeoff roll despite the airplane's difficulty becoming airborne The high-density altitude likely contributed to the airplane's reduced performance.
- [NTSB CEN13LA353](https://openairdocs.org/ntsb/CEN13LA353.md): Air Tractor AT-802A · Minot, ND · Accident · Serious injuries · Limited investigation · Final report · Jun 16, 2013 · N8522S · Substantial damage
  > The pilot’s failure to maintain adequate clearance from trees during an aerial application flight.
- [NTSB WPR13LA233](https://openairdocs.org/ntsb/WPR13LA233.md): Schweizer G-164D · Butte City, CA · Accident · Minor injuries · Limited investigation · Final report · May 16, 2013 · N83110 · Substantial damage
  > The pilot's failure to maintain airplane control after an encounter with wake turbulence while maneuvering at low altitude. Contributing to the accident was the pilot’s fatigue due to extended hours of wakefulness and high workload.
- [NTSB CEN13IA270](https://openairdocs.org/ntsb/CEN13IA270.md): Piaggio P180 · Clearwater, FL · Incident · No injuries · Incident investigation · Final report · Apr 24, 2013 · N139SL · Minor damage
  > The failure of the nose landing gear steering manifold during landing, which resulted in an uncommanded and uncontrollable right turn, and the overhaul facility’s improper overhaul of the nose landing gear steering manifold.
- [NTSB WPR13CA228](https://openairdocs.org/ntsb/WPR13CA228.md): Socata TBM 700 · Sandy Valley, NV · Accident · No injuries · Data collection · Final report · Apr 6, 2013 · N751J · Substantial damage
  > The pilot's failure to extend the landing gear, which resulted in a gear-up landing.
- [NTSB ERA13FA168](https://openairdocs.org/ntsb/ERA13FA168.md): Piper PA-31T · Fort Lauderdale, FL · Accident · 3 fatal · Field investigation · Final report · Mar 15, 2013 · N63CA · Destroyed
  > The pilot's failure to maintain airplane control following an emergency, the nature of which could not be determined because of crash and fire damage, which resulted in an aerodynamic stall.
- [NTSB CEN13LA171](https://openairdocs.org/ntsb/CEN13LA171.md): Piper PA46 · Grand Island, NE · Accident · No injuries · Limited investigation · Final report · Feb 13, 2013 · N32CA · Substantial damage
  > The pilot's failure to maintain airplane control after engine start.
- [NTSB CEN13LA168](https://openairdocs.org/ntsb/CEN13LA168.md): Air Tractor AT-502 · Forrest City, AR · Accident · Minor injuries · Limited investigation · Final report · Feb 7, 2013 · N198LA · Substantial damage
  > The in-flight separation of the left aileron's push-pull rod and hardware. Contributing to the accident was the failure of maintenance personnel to apply proper torque to the self-locking nuts.
- [NTSB CEN13FA135](https://openairdocs.org/ntsb/CEN13FA135.md): Cessna 208B · Pellston, MI · Accident · 1 fatal · Field investigation · Final report · Jan 16, 2013 · N1120N · Destroyed
  > The pilot's inadvertent controlled descent into terrain due to spatial disorientation. Contributing to the accident was lack of visual reference due to night conditions.
- [NTSB CEN13FA131](https://openairdocs.org/ntsb/CEN13FA131.md): Piper PA46-500TP · Paris, TX · Accident · 3 fatal · Field investigation · Final report · Jan 12, 2013 · N5339V · Destroyed
  > The pilot's encounter with convective weather, which resulted in a loss of airplane control.

## 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") = 2013
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52032', '52034'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52032&year=2013

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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.