DEN05LA023

NTSB accident investigation · Cessna 152 · Lyons, CO · November 14, 2004

Accident · No injuriesLimited investigationFinal report
Date
November 14, 2004, 10:15 local (17:15 UTC)
Place
Lyons, CO
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N48943Cessna 152
Weather
Instrument (IMC) · Day
Status
Completed · report September 13, 2005
Report
Approved by Office Director
Parties
Federal Aviation Administration - FSDO
FAA report
20041114028889A
Case key
60551

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

On this page

Probable cause

the pilot's inadequate in-flight planning/decision by his intentional VFR flight into IMC, and his failure to maintain obstacle clearance.

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 weatherDescent
In-flight planning/decision - inadequatePilot in commandCause
Weather condition - clouds
Vfr flight into imc - intentionalPilot in commandCause
In flight collision with objectDescent
Clearance - not maintainedPilot in commandCause
Object - tree(s)

Analysis

While descending through a layer of clouds, the airplane impacted trees and came to rest entangled with trees. According to the pilot and passenger, after performing climbs, descents, and turning maneuvers above a cloud layer, the pilot descended the airplane through the clouds. During the descent through the cloud layer, the airplane impacted trees.

Factual narrative

On November 14, 2004, approximately 1015 mountain standard time, a Cessna 152 single-engine airplane, N48943, was destroyed when it impacted trees and terrain while maneuvering near Lyons, Colorado. The commercial pilot and passenger were not injured. The airplane was registered to and operated by Air West Flight Center, Inc., Longmont, Colorado. Instrument meteorological conditions prevailed, and a flight plan was not filed for the Title 14 Code of Federal Regulations Part 91 business flight. The flight departed the Vance Brand Airport (2V2), Longmont, Colorado, approximately 0900.

According to the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), the pilot reported that the airplane departed 2V2 to the east in visual meteorological conditions (VMC). After departure, the pilot "climbed [the airplane] over a cloud deck maintaining VFR (visual flight rules) cloud clearances." While on top of the cloud layer, the pilot demonstrated basic flight maneuvers to the passenger. The pilot then turned the airplane to the west and south. While "descending [at] 2,300 feet per minute in VMC," the airplane impacted the tops of trees.

According to the Passenger Statement (NTSB Form 6120.9), the passenger reported that during the flight, the pilot demonstrated basic flight maneuvers. The pilot climbed the airplane above the clouds and practiced more turns. The pilot then told the passenger he would look for a "clearing" and start to descend. The passenger stated they "found a gap" and started to descend. The passenger reported, "As we started to descend it got really thick and it was hard to see, but when I was looking out the window I could see some ground...and then it got really blackish blue and then I looked out the front window and I saw trees..."

According to the local authorities that interviewed the pilot and passenger, the passenger recently won an essay contest through his local high school for 16 hours of flight and ground instruction provided by Air West Flight Center, Inc. The accident flight was the introductory flight of the awarded program. The local authorities reported the right wing was separated, the empennage was twisted, and the cabin sustained "extensive damage."

At 0945, the Jeffco Airport (BJC), Denver, Colorado, automated weather observing system (AWOS), located approximately 15 statute miles southeast of the accident site, reported the wind variable at 3 knots, 3 statute miles visibility, mist, sky overcast at 600 feet, temperature 1 degree Celsius, dew point minus 1 degree Celsius, and an altimeter setting of 30.28 inches of Mercury.

At 1045, the BJC AWOS reported the wind from 340 degrees at 4 knots, 3 statute miles visibility, mist, sky broken at 800 feet, temperature 3 degrees Celsius, dew point 0 degrees Celsius, and an altimeter setting of 30.28 inches of Mercury.

Aircraft

Registration
N48943
Reported as
Cessna 152
Category
Airplane
Serial number
15283391
Engine
Lycoming O-235, 110 horsepower, reciprocating
Damage
Destroyed
Flight
Business · Part 91
Operator
Air West Flight Center Inc
Registered owner
Air West Flight Center, Inc.
Airworthiness certificate
Standard, Normal
Departed
2V2 · Longmont, 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
35
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
January 13, 2003
Seat
Right
Flight hours
1,525 total · 300 in this make and model · 1,436 as pilot in command · 100 in the last 90 days · 35 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
1,800 ft overcast

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 N48943 · 1

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