# NTSB FTW90LA067: Cessna 172C, N1407Y, Prue, OK, February 10, 1990

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: February 10, 1990, 16:30 local (22:30 UTC)
- Place: Prue, OK
- Coordinates: 36.240703, -96.260032 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.2407&lon=-96.2600&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious, 1 minor
- Status: Completed, report September 30, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 23104
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW90LA067
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23104/pdf
- Page: https://openairdocs.org/ntsb/FTW90LA067

## Probable cause

FAILURE OF THE PILOT TO SEE-AND-AVOID THE POWERLINES.  THE POWERLINES WERE A RELATED FACTOR.

## Sequence of events

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

- In flight collision with object, maneuvering
  - visual lookout - inadequate, pilot in command (cause)
  - object - wire,transmission (contributing factor)
  - clearance - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - water

## Analysis

THE PILOT AND HIS TWO PASSENGERS WERE ON A PERSONAL FLIGHT TO LOOK OVER HIS PROPERTY AT A LAKE. HE DECIDED TO FLY DOWN A CREEK THAT ENTERED THE LAKE. WHILE DOING SO, THE PLANE COLLIDED WITH HIGH VOLTAGE POWER LINES, THEN WENT INTO THE LAKE. THE PILOT SAID HE DID NOT SEE THE LINES, NOR DID HE KNOW THEY WERE THERE.

## Aircraft

- Registration: [N1407Y](https://openairdocs.org/deregistered/N1407Y-2012-06-14), registration cancelled 2012-06-14, S/N 17249107, built 1961 (OpenAirDocs)
- Reported make and model: CESSNA 172C
- Registry model: [Cessna 172C](https://openairdocs.org/model/cessna-172c) (registry code 2072408) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17249107
- Airframe hours: 1601
- Engines: CONTINENTAL O-300-D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Robert F. & Mary Lynn Propst
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 1, 1989, 18 hours before
- Departed: NONE, OWASSO, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 590 total, 69 in this make and model, 491 as pilot in command, 14 in the last 90 days, 9 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 5 knots, gusting 12
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 55 °F
- Altimeter: 29.00 inHg

## 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 19900210001849A](https://openairdocs.org/incident/19900210001849A), Feb 10, 1990: Cessna 172C, Prue, OK, Substantial damage. Flew over a creek at low altitude. Struck unseen powerline and crashed.

## Other investigations on N1407Y (1)

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.

- [NTSB DEN06LA036](https://openairdocs.org/ntsb/DEN06LA036), Jan 25, 2006: Cessna 172C (N1407Y), Pagosa Springs, CO, substantial damage. Probable cause: the pilot initiating flight into known adverse weather, and his delay in not taking remedial action sooner by not making a precautionary landing. Contributing factors include the pilot's failure to…

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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