# NTSB CEN15CA086: Williams Glenn RV 8A, N81GW, San Antonio, TX, November 10, 2014

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: November 10, 2014, 18:30 local (23:30 UTC)
- Place: San Antonio, TX
- Coordinates: 29.723888, -98.45111 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.7239&lon=-98.4511&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-landing roll: Wildlife encounter (non-bird)](https://openairdocs.org/ntsb-events/310)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 22, 2015
- Report: Approved by Office Director
- NTSB office: Central Region
- NTSB case key (mKey): 90527
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN15CA086
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/90527/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=90527
- Page: https://openairdocs.org/ntsb/CEN15CA086

## Probable cause

Unintentional collision with a deer at night.

## Findings

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

- [Object/animal/substance: animal(s)/bird(s)](https://openairdocs.org/ntsb-findings/03022045): Environmental issues › Physical environment · Effect on equipment (probable cause); cases with it: [Williams Glenn RV-8A, 1 case](https://openairdocs.org/ntsb-findings/03022045/cases.md?model=056079B), [All aircraft, 358 cases](https://openairdocs.org/ntsb-findings/03022045/cases.md)
- [Light condition: dark](https://openairdocs.org/ntsb-findings/03036020): Environmental issues › Conditions/weather/phenomena · Contributed to outcome (probable cause); cases with it: [Williams Glenn RV-8A, 1 case](https://openairdocs.org/ntsb-findings/03036020/cases.md?model=056079B), [All aircraft, 448 cases](https://openairdocs.org/ntsb-findings/03036020/cases.md)

## Sequence of events

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

- [Landing-landing roll: Wildlife encounter (non-bird)](https://openairdocs.org/ntsb-events/310) (defining event); cases with it: [Williams Glenn RV-8A, 1 case](https://openairdocs.org/ntsb-events/310/sequence.md?model=056079B), [All aircraft, 107 cases](https://openairdocs.org/ntsb-events/310/sequence.md)

## Analysis

The pilot was making a night landing in visual meteorological conditions. During the rollout, a deer ran across the runway and was struck by the airplane, which resulted in substantial damage to the right wing spar.

## Factual narrative

The pilot was making a night landing in visual meteorological conditions. During the rollout, a deer ran across the runway and was struck by the airplane, which resulted in substantial damage to the right wing spar.

## Aircraft

- Registration: [N81GW](https://openairdocs.org/aircraft/N81GW), registered now, S/N 80917, built 2010 (OpenAirDocs)
- Reported make and model: WILLIAMS GLENN RV 8A
- Registry model: [Williams Glenn RV-8A](https://openairdocs.org/model/williams-glenn-rv-8a) (registry code 056079B) (OpenAirDocs)
- Registry engine: [Lycoming O-360-A1D](https://openairdocs.org/engine/lycoming-o-360-a1d) (registry code 42250, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 80917
- Year built: 2010
- Engines: Lycoming IO-360-A1A 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Wolfepack Aviation Group LLC
- Registered owner: Wolfepack Aviation Group LLC
- Airworthiness certificate: Special, Experimental (Special)
- Departed: 5C1, San Antonio, TX
- Destination: 1T8, San Antonio, TX
- Airport: 1T8, Bulverde Airpark, runway 16, 2,890 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; injuries: none; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: helicopter, airplane; medical: class 2; seat: left; restraint: 3-point; flight hours: 4,000 total, 143 in this make and model

## Weather

- Conditions: Visual (VMC), Night
- Wind: 180° at 3 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 54 °F
- Altimeter: 29.79 inHg
- Observed at: 5C1

## 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 20141110022499A](https://openairdocs.org/incident/20141110022499A), Nov 10, 2014: Williams Glenn RV-8A, Bulverde, TX, Substantial damage. During landing rollout on rwy 16, a deer ran across the path of the aircraft making contact with the right wing. Later determined structual damage to wing spar.

## Docket (1 files)

The files NTSB released with the investigation on January 8, 2015, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=90527. 13 KB in all.

- FAA Inspector's Statement (item 1, .PDF, 13 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40420769&FileExtension=.PDF&FileName=FAA%20Inspector%27s%20Statement-Redacted.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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