CEN11CA486

NTSB accident investigation · Hamlin John D CH701 · Paxton, IL · July 16, 2011

Accident · Minor injuriesData collectionFinal report
Date
July 16, 2011, 15:00 local (20:00 UTC)
Place
Paxton, IL
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9040WHamlin John D CH701
Defining event
Takeoff: Miscellaneous/other
Weather
Visual (VMC) · Day
Status
Completed · report October 20, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA-SPI-FSDO
FAA report
20110716015099A
Case key
81160

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's decision to takeoff with a tailwind in high density altitude conditions.

Findings · 4

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.

Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationHamlin John D CH701: 1 caseAll aircraft: 594 cases
Temp/humidity/pressure: high density altitudeEnvironmental issues › Conditions/weather/phenomena · Effect on operationHamlin John D CH701: 1 caseAll aircraft: 278 cases

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, during departure with a slight, quartering tailwind, the airplane did not continue climbing or gain altitude due to the high density altitude. The airplane started to descend and he realized that he would not clear the powerlines at the end of the runway, so he banked the airplane to the left and made a hard landing in the grass which resulted in substantial damage to the firewall, lower forward fuselage, and rudder. The pilot reported no mechanical anomalies that would have precluded normal operation.

Factual narrative

The pilot reported that the airplane did not gain enough altitude on takeoff to clear powerlines near the end of the runway. He banked the airplane to the left and made a hard landing in grass, which resulted in substantial damage to the firewall, lower forward fuselage, and rudder. The takeoff was made to the north with a slight quartering tailwind on an up-sloping runway. The field elevation was approximately 755 feet, with an outside temperature of 86 degrees Fahrenheit, dew point of 68 degrees Fahrenheit, and a barometric pressure of 30.07 inches of Mercury resulting in a density altitude of approximately 2,778 feet. The airplane was powered by a 65 horsepower engine and the pilot calculated the gross weight of the airplane to be near the maximum gross weight. The pilot reported there were no mechanical failures/malfunctions with the airplane prior to the accident.

Aircraft

Registration
N9040W
Reported as
Hamlin John D CH701
Category
Airplane, amateur-built
Serial number
3978
Airframe hours
363
Engine
Cont Motor A65, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Shawn D, Bennett
Registered owner
Hamlin John D
Airworthiness certificate
Special, Special light-sport (Special)
Last inspection
Annual · September 25, 2010 · 37 hours before
Departed
1C1 · Paxton, IL
Destination
PRG · Paris, IL
Airport
1C1 · Paxton Airport, runway 36, 3,409 × 50 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
56
Injuries
None
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Medical
Sport pilot
Seat
Left
Flight hours
87 total · 47 in this make and model · 53 as pilot in command · 23 in the last 90 days · 11 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
225° at 3 knots
Visibility
10 statute miles
Lowest ceiling
12,000 ft
Temperature
86 °F, dew point 68 °F
Altimeter
30.06 inHg

Docket · 1

The files NTSB released with the investigation on September 7, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 520 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.