# NTSB SEA93LA211: Cessna 150L, N11882, Silverton, OR, September 14, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 13, 1993, 19:30 local (Sep 14, 1993, 02:30 UTC)
- Place: Silverton, OR
- Coordinates: 44.949474, -122.710151 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.9495&lon=-122.7102&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 13, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 41777
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA93LA211
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41777/pdf
- Page: https://openairdocs.org/ntsb/SEA93LA211

## Probable cause

CLEARANCE WAS NOT MAINTAINED. A FACTOR TO THE ACCIDENT WAS: POOR IN-FLIGHT PLANNING/DECISION.

## Sequence of events

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

- In flight collision with object, maneuvering
  - object - wire,transmission
  - clearance - not maintained, pilot in command (cause)
  - in-flight planning/decision - poor, pilot in command (contributing factor)

## Analysis

DURING AN INSTRUCTIONAL FLIGHT, THE FLIGHT INSTRUCTOR PLANNED ON BUZZING THE STUDENT'S HOUSE. WHILE FLYING OVER THE CORN FIELD, THE INSTRUCTOR WAS AWARE OF THE POWER LINES THAT RAN PARALLEL TO THE FIELD, BUT DID NOT SEE THE ONES THAT RAN PERPENDICULAR TO THE FIELD AND THE AIRPLANE'S FLIGHT PATH. THE AIRPLANE STRUCK THE WIRES AND WAS THEN FLOWN BACK TO THE AIRPORT WITHOUT FURTHER INCIDENT.

## Factual narrative

On September 13, 1993, at approximately 1930 Pacific daylight time, a Cessna 150L, N11882, collided with a power line during a low level flight maneuver near Silverton, Oregon.  Visual meteorological conditions prevailed at the time and no flight plan was filed for the local instructional flight.  The airplane was substantially damaged and the certificated flight instructor and student pilot were not injured.  The flight had originated from Aurora, Oregon.

The flight instructor reported that the student wanted to see his home from the air and the instructor stated that he planned to "buzz" the house.  The instructor set up to fly down the center of a corn field and said that he saw the power lines that were parallel to the airplane's flight path, but did not see the ones running perpendicular to the flight path.

The accident was not reported until September 24, 1993, when it was determined that there was structural damage to the airplane.

## Aircraft

- Registration: [N11882](https://openairdocs.org/deregistered/N11882-1998-10-21), registration cancelled 1998-10-21, S/N 15075684 (OpenAirDocs)
- Reported make and model: CESSNA 150L
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs)
- Category: Airplane
- Serial number: 15075684
- Airframe hours: 6392
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Aurora Aviation
- Registered owner: Latta, John S.
- Airworthiness certificate: Standard, Utility
- Last inspection: 100 hour, August 6, 1993, 42 hours before
- Departed: SLE, SALEM, OR
- Destination: 352, AURORA, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 20; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 460 total, 50 in this make and model, 350 as pilot in command, 60 in the last 90 days, 20 in the last 30 days

## Weather

- Conditions: Visual (VMC), Dusk
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 70 °F

## 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 19930913036949A](https://openairdocs.org/incident/19930913036949A), Sep 13, 1993: Cessna 150L, Silverton, OR, Substantial damage. CFI struck powerline while buzzing students house. Remained airborne and returned to base.

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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