# NTSB BFO93LA056: Cessna 177RG, N7747V, Corry, PA, March 23, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 23, 1993, 00:45 local (05:45 UTC)
- Place: Corry, PA
- Coordinates: 41.920127, -79.630554 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.9201&lon=-79.6306&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report February 18, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 11922
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO93LA056
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11922/pdf
- Page: https://openairdocs.org/ntsb/BFO93LA056

## Probable cause

FAILURE OF THE PILOT TO MAINTAIN RUNWAY ALIGNMENT DURING THE LANDING ROLL. FACTORS RELATED TO THE ACCIDENT WERE: DARKNESS, THE PILOT'S LACK OF VISUAL CUES DUE TO THE RUNWAY LIGHTS BEING OBSCURED BY THE PLOWED SNOW, AND FAILURE OF AIRPORT PERSONNEL TO ISSUE A NOTAM.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- On ground/water encounter with terrain/water, landing - roll
  - light condition - dark night (contributing factor)
  - airport facilities,runway/landing area condition - snowbank (contributing factor)
  - notams - not issued, airport personnel (contributing factor)
  - proper alignment - not maintained, pilot in command (cause)
  - visual/aural detection, pilot in command (contributing factor)

## Analysis

THE PILOT REPORTED THAT IT WAS A DARK NIGHT, AND HE WAS PRACTICING TAKEOFFS AND LANDINGS FROM THE RIGHT SEAT TOWARDS ATTAINING HIS FLIGHT INSTRUCTOR CERTIFICATE. HE STATED THAT HE MADE A NORMAL APPROACH AND TOUCHDOWN ON THE CENTERLINE, BUT DURING THE LANDING ROLL THE RIGHT WING STRUCK A SNOWBANK OFF THE RIGHT SIDE OF THE RUNWAY AND THE RIGHT MAIN GEAR COLLAPSED. THE PILOT REPORTEDLY HAD 1 HOUR OF DUAL FROM THE RIGHT SEAT. THE RUNWAY HAD BEEN PLOWED 70 FEET OF THE 75 FOOT WIDTH, WITH THE RUNWAY SURFACE GENERALLY BARE. THE PLOWED SNOW WAS APPROXIMATELY 4 TO 5 FEET HIGH, AND WAS PLACED BETWEEN THE EDGES OF THE RUNWAY AND THE ROW OF RUNWAY LIGHTS.

## Aircraft

- Registration: [N7747V](https://openairdocs.org/deregistered/N7747V-2006-06-01), registration cancelled 2006-06-01, S/N 177RG0908, built 1976 (OpenAirDocs)
- Reported make and model: CESSNA 177RG
- Registry model: [Cessna 177RG](https://openairdocs.org/model/cessna-177rg) (registry code 2073709) (OpenAirDocs)
- Registry engine: [Lycoming IO-360-A1B6D](https://openairdocs.org/engine/lycoming-io-360-a1b6d) (registry code 41593, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 177RG0908
- Engines: LYCOMING IO-360-A1B6D 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Robert E Dunn
- Registered owner: Robert E Dunn
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, January 2, 2000
- Departed: ERI, ERIE, PA
- Airport: 8G2, Corry-Lawrence, runway 14, 4,100 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 416 total, 18 in this make and model, 309 as pilot in command

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 60° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 30 °F, dew point 21 °F
- Altimeter: 30.00 inHg
- Observed at: ERI, 1 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 19930323005809A](https://openairdocs.org/incident/19930323005809A), Mar 23, 1993: Cessna 177RG, Corry, PA, Substantial damage. Practice landing right seat. Wing hit snowbank. Right main gear collapsed. Only one hr dual from right seat.

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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