DEN00LA006

NTSB accident investigation · Kendall/Mckaughlin Rans S-10 Sakota · Hudson, CO · October 9, 1999

Accident · No injuriesLimited investigationFinal report
Date
October 9, 1999, 11:00 local (17:00 UTC)
Place
Hudson, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N444YBKendall/Mckaughlin Rans S-10 Sakota
Weather
Visual (VMC) · Day
Status
Completed · report June 23, 2000
Report
Approved by Office Director
FAA report
19991009044949A
Case key
47564

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

Inadequate preflight planning when the pilot failed to evaluate aircraft performance and weather. Factors were high density altitude, and unsuitable terrain for a forced landing.

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.

Forced landingTakeoff - initial climb
Weather condition - high density altitude
Weather evaluation - inadequatePilot in command
Performance data - not complied withPilot in command
Preflight planning/preparation - inadequatePilot in command
In flight collision with terrain/waterEmergency landing after takeoff
Terrain condition - none suitable
Terrain condition - soft

Analysis

Following initial takeoff, the aircraft could not climb out from the surrounding terrain and settled into the terrain. Density altitude at the time was 7,000 feet above mean sea level.

Factual narrative

On October 9, 1999, at 1100 mountain daylight time, a Kendall/McKaughlin Rans S-10 Sakota, N444YB, sustained substantial damage when it collided with terrain during initial climb following takeoff from a private airstrip 5 miles east of Hudson, Colorado. The private pilot occupant was not injured. The flight was operating under Title 14 CFR Part 91 and no flight plan was filed. The planned destination was Jefferson County Airport, Broomfield, Colorado.

According to the pilot, he initiated several turns following takeoff due to terrain that the aircraft could not climb to clear. The pilot said the aircraft settled in a level attitude and struck soft terrain that caused the struts to penetrate the wings.

Density altitude at the time was approximately 7,000 feet above mean sea level.

Aircraft

Registration
N444YB
Reported as
Kendall/Mckaughlin Rans S-10 Sakota (RANS S-10)
Category
Airplane, amateur-built
Serial number
IJB
Airframe hours
223
Engine
Rotax 582, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Robert Mason
Registered owner
Jim Maclaughlin
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · July 24, 1999 · 7 hours before
Departed
NONE
Destination
BJC · Broomfield, CO

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
42
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
831 total · 114 in this make and model · 697 as pilot in command · 12 in the last 90 days · 7 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 28 °F
Observed at
DEN, 15 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.

Other investigations on N444YB · 1

Matched to the same aircraft by N-number and date.