DEN00LA002

NTSB accident investigation · Piper PA-24-250 · La Junta, CO · October 2, 1999

Accident · Serious injuriesLimited investigationFinal report
Date
October 1, 1999, 20:06 local (Oct 2, 1999, 02:06 UTC)
Place
La Junta, CO
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N6406PPiper PA-24-250
Weather
Visual (VMC) · Night/dark
Status
Completed · report June 21, 2000
Report
Approved by Office Director
FAA report
19991001043719A
Case key
47494

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

The pilot-in-command's failure to maintain a proper altitude during final approach to landing, and his misjudgment of altitude clearances. Factors were the sudden windshift, downdraft and turbulent weather conditions, the dark night, and the pilot's lack of familiarity with the geographic area.

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 encounter with weatherApproach - vfr pattern - final approach
Weather condition - sudden windshiftFactor
Weather condition - downdraftFactor
Weather condition - turbulenceFactor
In flight collision with terrain/waterApproach - vfr pattern - final approach
Terrain condition - grass
Proper altitude - not maintainedPilot in command
Lack of familiarity with geographic areaPilot in command
Light condition - dark night
Altitude/clearance - misjudgedPilot in command

Analysis

The pilot and pilot-certificated passenger were on a return cross-country flight that originated from Washington, D.C., with a final destination of Lancaster, California. They departed Missouri earlier in the day, and had planned a stop in Colorado. While approaching Colorado's La Junta airport for landing, the aircraft encountered wind shifts, downdrafts and turbulent weather conditions. As the pilot turned onto final approach during one of several unsuccessful landing attempts, the aircraft impacted the ground at an elevation of 4,500 feet msl in dark night conditions.

Factual narrative

On October 1, 1999, at 2006 mountain daylight time, a Piper PA-24-250, N6406P, was substantially damaged when it collided with terrain while on final approach to landing at La Junta Municipal Airport, Junta, Colorado. The private pilot received minor injuries, and the private pilot certificated passenger was seriously injured. Night visual meteorological conditions prevailed, and no flight plan was filed for the personal cross-country flight being conducted under Title 14 CFR Part 91. The flight originated from Fredericktown Regional Airport, Fredericktown, Missouri, at 1530 central daylight time.

According to the pilot, prior to departure from Fredericktown, he received an outlook weather briefing from Missouri's Columbia Automated Flight Service Station (AFSS) the previous evening, and a standard weather briefing on the morning of the accident. The pilot stated that the weather "appeared normal with 20 knot headwinds, weather clear." While en route, he monitored several airport's ATIS (Automatic Terminal Information Service) reports, and the weather appeared "normal."

In the pilot's accident report, he stated that while en route to La Junta, he noted the aircraft's groundspeed to be 113 knots with a 20 to 30 knot headwind, as indicated on his Global Position System (GPS) receiver. As he approached La Junta, the wind shifted from a headwind to a tailwind and the GPS indicated the groundspeed to be 165 to 170 knots. As he approached the airport for landing, the turbulence increased with "wind direction shifts." He stated that he maintained an altitude of 5,000 feet above mean sea level (msl) while on a downwind to runway 8 (the airport's elevation is 4,238 feet msl; the Federal Aviation Administration recommends traffic pattern altitudes to be conducted at 1,000 feet above ground level [agl] unless otherwise specified.) As he turned onto final approach, the aircraft encountered a downdraft and began to lose altitude, then impacted the ground. During the impact sequence, the aircraft sustained damage to both wings, nose gear, and propeller.

Following the accident, the pilot was interviewed by the Otero County Sheriff's Department. The pilot stated in the interview that he and his father were on a cross-country flight that originated from Washington, D.C., with a final destination of Lancaster, California. During a stop at La Junta, he initially attempted to land on runway 8, but the "wind was strong and [he] missed the runway." He aborted the landing and was planning to return for another landing attempt. He stated that he was "heading east and [was] unfamiliar with the terrain," then struck the ground at an elevation of 4,500 feet msl in dark night conditions. According to the Sheriff's report, when asked if he had experienced any mechanical problems with the aircraft, he stated, "no, that it was just pilot error." The passenger was also interviewed while in the hospital. He stated that "the wind was strong and they misjudged the land around the airport."

Aircraft

Registration
N6406P
Reported as
Piper PA-24-250
Category
Airplane
Serial number
24-1516
Airframe hours
4,220
Engine
Lycoming O-540, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Danny C. & Ralph C. Olsen
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 17, 1999 · 36 hours before
Departed
H88 · Fredericktown, MO
Destination
LHX · CO
Airport
LHX · La Junta Municipal, runway 8, 6,852 × 100 ft, asphalt

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
53
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
690 total · 286 in this make and model · 690 as pilot in command · 34 in the last 90 days · 28 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
20° at 25 knots, gusting 32
Visibility
10 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 37 °F
Altimeter
29.00 inHg
Observed at
LHX

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 N6406P · 1

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