CEN09LA546

NTSB accident investigation · Taylorcraft BCS-65 · Boulder, CO · August 21, 2009

Accident · No injuriesLimited investigationFinal report
Date
August 21, 2009, 09:10 local (15:10 UTC)
Place
Boulder, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N8023QTaylorcraft BCS-65
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report December 15, 2009
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20090821015159A
Case key
74607

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

A partial loss of engine power during initial climb due to carburetor icing.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Temp/humidity/pressure: conducive to carburetor icingEnvironmental issues › Conditions/weather/phenomena · Effect on equipmentTaylorcraft BCS-65: 1 caseAll aircraft: 435 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to the pilot, the engine lost power shortly after takeoff. The pilot performed a forced landing to an adjacent field. During the forced landing the airplane was substantially damaged. An examination of the airplane, conducted by the Federal Aviation Administration, revealed no preaccident anomalies. According to the carburetor icing chart, the meteorological conditions at the time of the accident were conducive to serious carburetor icing at glide power.

Factual narrative

On August 21, 2009, approximately 0910 mountain daylight time, a Taylorcraft BCS-65, N8023Q, piloted by a commercial pilot, was substantially damaged during a forced landing near Boulder, Colorado. Visual meteorological conditions prevailed at the time of the accident. The local flight was being conducted under the provision of Title 14 Code of Federal Regulation Part 91 without a flight plan. The pilot and passenger were not injured. The local flight departed Boulder Municipal Airport (KBDU), Boulder, Colorado, approximately 0900. According to the written statement submitted by the pilot, the airplane's engine lost power after taking off from runway 08. She determined that she was not at an altitude sufficient enough to allow for her to return to the airport so she performed a forced landing to an adjacent field. During the forced landing the landing gear "failed." According to a Federal Aviation Administration (FAA) airworthiness inspector who traveled to the scene, the firewall was wrinkled, both landing gear collapsed, the propeller blades were bent, and the belly of the airplane fuselage was damaged. According to the pilot, she had approximately nine gallons of fuel on board prior to the accident. Law enforcement officials reported that fuel was leaking from the left side of the airplane. Further examination revealed that the right tank was intentionally plugged and was not being utilized as a source for fuel. Approximately four gallons of fuel was recovered from the left tank following recovery of the airplane. The engine was examined and run under the auspices of the FAA. The engine started without hesitation and ran for several minutes without any problems. Further examination of the magnetos revealed no anomalies. The closest official weather observation station was Rocky Mountain Metropolitan Airport (KBJC), Denver, Colorado, located nine nautical miles (nm) southeast of the accident site. The weather observation station recorded a temperature between 16 degrees Celsius (C) and 20 degrees C around the time of the accident. Dew point was recorded at 7 and 8 degrees C. A review of the carburetor icing chart revealed conditions were conducive for "serious icing at glide power."

Aircraft

Registration
N8023Q
Reported as
Taylorcraft BCS-65
Category
Airplane
Serial number
3135
Airframe hours
2,076
Engine
Continental A65-8, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 10, 2008
Departed
KBDU · Boulder, CO
Destination
KBDU · Boulder, 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
19
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
April 15, 2009
Seat
Left
Flight hours
338 total · 13 in this make and model · 239 as pilot in command · 25 in the last 90 days · 7 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
70 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 45 °F
Altimeter
30.19 inHg
Observed at
KBJC, 9 nm away

Docket · 2

The files NTSB released with the investigation on October 7, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 429 KB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.