# NTSB GAA15CA135: WSK PZL Mielec M 18A, N2159C, Nyssa, OR, June 23, 2015

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: June 23, 2015, 06:18 local (13:18 UTC)
- Place: Nyssa, OR
- Coordinates: 43.897777, -116.989997 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.8978&lon=-116.9900&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Defining event: [Takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 11, 2015
- Report: Approved by Office Director
- NTSB office: General Aviation Accidents
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 91430
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA15CA135
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/91430/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=91430
- Page: https://openairdocs.org/ntsb/GAA15CA135

## Probable cause

The pilot's failure to maintain directional control during takeoff, resulting in a runway excursion and collision with terrain.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [WSK PZL Mielec M-18A, 6 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=9810103), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md)
- [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [WSK PZL Mielec M-18A, 3 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=9810103), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) (defining event); cases with it: [WSK PZL Mielec M-18A, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=9810103), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md)
- [Takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [WSK PZL Mielec M-18A, 9 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=9810103), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md)

## Analysis

The pilot reported that during the takeoff roll, the airplane rolled over a bump on the runway surface and became airborne. The airplane descended to the runway while operating at takeoff power, resulting in a departure end runway excursion and collided with terrain. The airplane sustained substantial damage to the wings, fuselage and rudder. The pilot reported that there were no mechanical malfunctions or failures with the airplane prior to the flight that would have precluded normal operation.

## Factual narrative

The pilot reported that during the takeoff roll, the airplane rolled over a bump on the runway surface and became airborne. The airplane descended to the runway while operating at takeoff power, resulting in a departure end runway excursion and collided with terrain. The airplane sustained substantial damage to the wings, fuselage and rudder. The pilot reported that there were no mechanical malfunctions or failures with the airplane prior to the flight that would have precluded normal operation.

## Aircraft

- Registration: [N2159C](https://openairdocs.org/deregistered/N2159C-2019-01-15), registration cancelled 2019-01-15, S/N 1Z024-21, built 1994 (OpenAirDocs)
- Reported make and model: WSK PZL MIELEC M 18A (B)
- Registry model: [WSK PZL Mielec M-18A](https://openairdocs.org/model/wsk-pzl-mielec-m-18a) (registry code 9810103) (OpenAirDocs)
- Registry engine: [Wsk-Pzl PZL AI-14 series](https://openairdocs.org/engine/wsk-pzl-pzl-ai-14-series) (registry code 67202, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1Z024-21
- Year built: 1994
- Airframe hours: 4490.2
- Engines: Honeywell/Garrett 331-IOU 970 horsepower turbo prop
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Bybee Air Service Inc
- Registered owner: Bybee Air Service Inc
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 9, 2015, 95 hours before
- Departed: 970G, Nyssa, OR
- Destination: 970G, Nyssa, OR
- Airport: 97OG, Bybee Field, runway 35, 3,000 × 20 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; injuries: none; commercial; airplane ratings: single-engine land; medical: class 2, with waivers/limitations; last flight review April 2, 2015; seat: single; restraint: 4-point; flight hours: 3,825.1 total, 94.6 in this make and model, 3,521.1 as pilot in command, 131 in the last 90 days, 60 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 66 °F, dew point 37 °F
- Altimeter: 30.01 inHg
- Observed at: ONO, 7 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20150623008139A](https://openairdocs.org/incident/20150623008139A), Jun 23, 2015: Wsk Pzl Mielec M-18A, Nyssa, OR, Substantial damage. Ag operations. First flight of the day. Full fuel and an almost full hopper. Weather was clear with light winds and temp of 60. Pilot stated aircraft was…

## Docket (3 files)

The files NTSB released with the investigation on August 27, 2015, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=91430. 1.7 MB in all.

- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40431198&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF
- Photo 1 - Left Wing and Rudder (Photo Courtesy of FAA) (item 2, .PDF, 105 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40431199&FileExtension=.PDF&FileName=Photo%201%20-%20Left%20Wing%20and%20Rudder%20(Photo%20Courtesy%20of%20FAA)-Master.PDF
- Photo 2 - Right Wing and Nose (Photo Courtesy of FAA) (item 3, .PDF, 80 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40431200&FileExtension=.PDF&FileName=Photo%202%20-%20Right%20Wing%20and%20Nose%20(Photo%20Courtesy%20of%20FAA)-Master.PDF

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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