# NTSB FTW88FA057: Cessna 120, N2431N, Ada, OK, February 10, 1988

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: February 9, 1988, 18:00 local (Feb 10, 1988, 00:00 UTC)
- Place: Ada, OK
- Coordinates: 34.770389, -96.660072 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.7704&lon=-96.6601&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report March 30, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 22536
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW88FA057
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22536/pdf
- Page: https://openairdocs.org/ntsb/FTW88FA057

## Sequence of events

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

- In flight collision with object, cruise
  - proper altitude - not maintained, pilot in command (cause)
  - light condition - dusk (contributing factor)
  - clearance - inadequate, pilot in command (contributing factor)
  - object - wire,transmission (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT WAS FLYING LOW UP THE RIVER AND HIT THE UPPER STRAND OF A TWO STRAND HIGH VOLTAGE POWER LINE. BOTH THE PILOT AND PASSENGER RECEIVED SERIOUS INJURIES WHEN THE AIRPLANE CRASHED ON A SAND-BAR IN THE RIVER.

## Aircraft

- Registration: [N2431N](https://openairdocs.org/deregistered/N2431N-2013-02-11), registration cancelled 2013-02-11, S/N 12683, built 1947 (OpenAirDocs)
- Reported make and model: CESSNA 120
- Registry model: [Cessna 120](https://openairdocs.org/model/cessna-120) (registry code 2071402) (OpenAirDocs)
- Registry engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 12683
- Airframe hours: 3840
- Engines: CONTINENTAL C85F 85 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Ronnie D. Greager
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, October 1, 1987, 20 hours before
- Departed: ADH, ADA, OK
- Destination: NORMAN, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; flight hours: 336 total, 66 in this make and model, 305 as pilot in command, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 170° at 10 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 36 °F
- Altimeter: 30.00 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 19880209002179A](https://openairdocs.org/incident/19880209002179A), Feb 9, 1988: Cessna 120, Ada, OK, Destroyed. Struck a powerline and crashed while flying over a river at an unsafe altitude.

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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