SEA90FA086

NTSB accident investigation · Rockwell Commander 114 · Atlanta, ID · May 27, 1990

Accident · FatalField investigationFinal report
Date
May 27, 1990, 16:30 local (22:30 UTC)
Place
Atlanta, ID
Injuries
3 fatal, 1 serious
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N4907WRockwell Commander 114
Weather
Visual (VMC) · Day
Status
Completed · report October 2, 1992
Report
Approved by Office Director
FAA report
19900527017409A
Case key
41110

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

Poor preflight planning premature lift-off on takeoff by the pilot in command.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectTakeoff - initial climb
Object - tree(s)Factor
Preflight planning/preparation - poorPilot in commandCause
Lack of total experience in type operationPilot in commandFactor
Weather condition - high density altitudeFactor
Lack of familiarity with geographic areaPilot in commandFactor
Terrain condition - risingFactor
Terrain condition - mountainous/hillyFactor
Lift-off - prematurePilot in commandCause

Analysis

The pilot made a takeoff from a 2700 ft long back country dirt strip in high density altitude conditions. The acft lifted off near mid-field, settled back onto the runway, took off near the end of the strip, and impacted trees on a ridgeline 1/4 mile from the airport. The acft was loaded to near maximum gw.

Aircraft

Registration
N4907W
Reported as
Rockwell Commander 114 (COMMANDER)
Category
Airplane
Serial number
14232
Airframe hours
1,085
Engine
Lycoming IO-540-T4B5D, 260 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Wayne E. Thornton
Registered owner
Wayne E Thornton
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · May 22, 1989 · 71 hours before
Destination
BOI · Boise, ID
Airport
NONE · Green Valley, runway 25, 2,700 × 50 ft, dirt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
63
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
633 total · 282 in this make and model · 515 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 7 knots
Visibility
20 statute miles
Lowest ceiling
7,500 ft broken
Temperature
70 °F, dew point 50 °F
Altimeter
29.00 inHg
Observed at
BOI, 48 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.