# NTSB FTW86LA145: Cessna 172D, N2730U, Cordell, OK, August 9, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 9, 1986, 09:00 local (14:00 UTC)
- Place: Cordell, OK
- Coordinates: 35.299903, -98.980316 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.2999&lon=-98.9803&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 22071
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW86LA145
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22071/pdf
- Page: https://openairdocs.org/ntsb/FTW86LA145

## Sequence of events

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

- Loss of engine power, maneuvering
  - fuel system,carburetor - ice (cause)
  - carburetor heat - improper use of, pilot in command (cause)
  - weather condition - carburetor icing conditions (contributing factor)
- Forced landing, descent - emergency
- In flight collision with object, descent - emergency
  - object - wire,static (cause)
  - visual lookout - inadequate, pilot in command (contributing factor)
- On ground/water encounter with terrain/water, descent - emergency

## Analysis

THE PILOT WAS PRACTICING MANEUVERS AT 1200 FEET AGL, WHEN THE ENGINE BEGAN TO RUN ROUGH. HE APPLIED THE CARBURETOR HEAT AND HAD A LARGE POWER REDUCTION. HE THEN TURNED OFF THE CARBURETOR HEAT AND HAD A TOTAL LOSS OF POWER AT APPROXIMATELY 800 FEET AGL. THE PILOT BEGAN AN EMERGENCY DESCENT AND THE AIRCRAFT COLLIDED WITH A POWER LINE AT APPROXIMATELY 30 FEET AGL. THIS CAUSED THE NOSE OF THE AIRCRAFT TO DROP AND YAW LEFT. THE AIRCRAFT SLID ABOUT 40 TO 50 FEET ON LANDING SEVERING THE NOSE GEAR AND BENDING THE RIGHT WING. NO EVIDENCE OF ANY MECHANICAL FAILURE OR MALFUNCTION WAS FOUND. THE CARBURETOR ICING PROBABILITY CHART INDICATES SERIOUS ICING CONDITIONS EXISTED.

## Aircraft

- Registration: [N2730U](https://openairdocs.org/deregistered/N2730U-1989-08-04), registration cancelled 1989-08-04, S/N 17250330 (OpenAirDocs)
- Reported make and model: CESSNA 172D
- Registry model: [Cessna 172D](https://openairdocs.org/model/cessna-172d) (registry code 2072410) (OpenAirDocs)
- Category: Airplane
- Serial number: 17250330
- Airframe hours: 3065
- Engines: CONTINENTAL O-300-D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Kevin O 'Halloran
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 25, 1986, 97 hours before
- Departed: F36, CORDELL, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 1,857 total, 719 in this make and model, 1,727 as pilot in command, 68 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 107° at 7 knots
- Visibility: 8 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 66 °F
- Altimeter: 30.00 inHg
- Observed at: OKC, 70 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 19860809038589A](https://openairdocs.org/incident/19860809038589A), Aug 9, 1986: Cessna 172D, Cordell, OK, Substantial damage. Engine quit after power reduction. Aircraft struck unseen wire during forced landing. Carburetor heat not used.

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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