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Aviation safety reports, made easier to study

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NTSB Report

August 19, 2011 · Cessna 170B · N2789D

Jefferson, OR

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
August 19, 2011
Injury Outcomes
2 injuries (2 minor injuries)
Location
Jefferson, OR
Aircraft
Cessna 170B
Tail Number
N2789D
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR11CA397

The pilot was landing on a grass field toward the west just prior to sunset. During the final approach, about 30 feet above ground level, he became aware of power transmission lines directly ahead. The airplane struck the lines and descended to the ground. The airplane sustained substantial damage during the accident sequence, and the pilot and passenger sustained minor injuries. According to the United States Naval Observatory Astronomical Applications Department, the altitude and azimuth of the sun at 1940 in the closest town were 5 degrees and 283.4 degrees, respectively. The pilot reported no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation. He stated that this was the first time he had flown to this location, and that he did not overfly the field or perform a thorough review of the area prior to attempting the landing.

NTSB Probable Cause

The pilot's failure to maintain clearance from power transmission lines during the landing approach into the sun.

Full Narrative

The private pilot was attempting to perform a landing into a grass field just prior to sunset. The landing approach was performed to the west, towards the sun. During the final approach, about 30 feet above ground level, he became aware of power transmission lines directly ahead. The airplane struck the lines and descended to the ground. The airplane sustained substantial damage during the accident sequence, and the pilot and passenger sustained minor injuries. According to the United States Naval Observatory Astronomical Applications Department, the altitude and azimuth of the sun at 1940 in the closest town were 5 degrees and 283.4 degrees, respectively. The pilot stated that this was the first time he had landed at this location, but he had both overflown, and walked along the field on multiple occasions prior. The pilot reported no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation.

Flight

Event TypeAccident
Event Time19:45 PDT
Nearest AirportJefferson (0nm)
Flight Plan FiledUnknown
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 170B
Tail NumberN2789D
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsCont Motor · C145 SERIES · Reciprocating · 145
Seats4

People & Injuries

Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 41 · Third Class · Minor

Conditions

ConditionsVMC
LightDaylight
Wind50° @ 8 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point50
Altimeter30.04 inHg
Observation Time01:56
Weather SourceWFAC

Appendix: Source Data