CEN14LA136

NTSB accident investigation · Mahon Paul D Capella XS · Houston, TX · February 9, 2014

Accident · Serious injuriesLimited investigationFinal report
Date
February 9, 2014, 12:45 local (18:45 UTC)
Place
Houston, TX
Injuries
1 serious, 1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N239PMMahon Paul D Capella XS
Defining event
Enroute-climb to cruise: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report October 27, 2014
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20140209003659A
Case key
88795

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 loss of engine power 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 equipmentMahon Paul D CAPELLA SX: 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

The pilot and passenger reported that the engine lost power shortly after takeoff. During the forced landing to a field, the landing gear hit a berm, and the airplane nosed over, which resulted in substantial damage to the right wing, fuselage, and empennage. An examination of the airframe, engine, and related systems revealed no anomalies that would have precluded normal operation. The atmospheric conditions at the time of the accident were favorable for the formation of serious carburetor icing at cruise power. It is likely that carburetor ice accumulated during the taxi, which resulted in the loss of engine power.

Factual narrative

On February 9, 2014, about 1245 central standard time, a Capella XS experimental amateur-built airplane, N239PM, was substantially damaged during a forced landing 1/2 mile southwest of David Wayne Hooks Memorial Airport (KDWH), Houston, Texas. The private pilot was seriously injured and the passenger was not injured. The airplane was registered to and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight which operated without a flight plan. The local flight originated from KDWH at 1240. According to the private pilot and the passenger (who also owned the airplane) the engine lost power shortly after takeoff. They attempted to return to the airport but were unable to maintain altitude. They elected to perform a forced landing to a field. During the forced landing, the landing gear hit a berm and the airplane nosed over. The right wing separated and the fuselage and empennage were substantially damaged. An examination of the airframe, engine, and related systems revealed no anomalies. The temperature and dew point recorded at the time of the accident were 14 degrees Celsius and 12 degrees Celsius, respectively. A review of the carburetor icing probability chart, located in the Federal Aviation Administration's Special Airworthiness Information Bulletin CE-09-35, dated 6/30/2009, revealed that the airplane was operating in conditions favorable for the formation of serious carburetor icing at cruise power.

Aircraft

Registration
N239PM
Reported as
Mahon Paul D Capella XS
Category
Airplane, amateur-built
Serial number
239
Built
2011
Airframe hours
470
Engine
Rotax 582, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · August 14, 2013
Departed
KDWH · Houston, TX
Destination
KDWH · Houston, TX

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
69
Injuries
Serious
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Restraint
3-point
Flight hours
0 total · 0 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 4 knots
Visibility
10 statute miles
Lowest ceiling
1,100 ft overcast
Temperature
57 °F, dew point 54 °F
Altimeter
30.09 inHg
Observed at
KDWH, 5 nm away

Docket · 4

The files NTSB released with the investigation on April 25, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 MB 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.