- Date
- December 30, 2011, 12:00 local (17:00 UTC)
- Place
- Mansfield, MA
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N344MKKoth Larry Jabiru Calypso
- Defining event
- Landing-landing roll: Loss of control on ground
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 27, 2012
- Report
- Approved by Office Director
- NTSB office
- Eastern Region Aviation
- Parties
- FAA/FSDO
- FAA report
- 20111230029389A
- Case key
- 82592
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 did not maintain directional control during landing. Contributing to the accident was the pilot’s not closing the throttle upon landing and his improper adjustment of the airplane’s brakes.
Findings · 5
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.
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/owner was practicing takeoffs and landings in the recently certificated experimental amateur-built airplane. After completing an adjustment of the left wing to control a rolling tendency, as well as multiple adjustments to the hand-operated brakes, the pilot performed a short flight over the runway and landed about 400 feet beyond the point of takeoff. The airplane touched down about 55 knots airspeed, and the pilot applied the brakes. The airplane veered, did not slow, and departed the left side of the runway. The airplane continued about 900 feet after touchdown before it collided with terrain and came to rest inverted, resulting in substantial damage to the wings. After the accident, the pilot could not recall if he had reduced the throttle upon landing. Examination of the cockpit revealed that the flight controls, engine controls, and the hand-operated brake control were of a nonstandard configuration, and all had matching red handles. It was also noted that application of the brakes required the pilot to release the control stick. Examination of the braking system revealed binding of the left brake caliper and disk, missing washers from the right brake caliper, distortion of the left and right inner lining plates over the piston of each brake assembly, and compression of the return springs. Other than the known wing and brake anomalies, the pilot reported no mechanical deficiencies with the airplane.
Factual narrative
The pilot/owner was practicing takeoffs and landings in the recently certificated experimental amateur-built airplane at the time of the accident. After completing an adjustment of the left wing to control a rolling tendency, as well as multiple adjustments to the hand-operated brakes, the pilot performed a short flight over the runway, and landed back about 400 feet beyond the point of takeoff. The airplane touched down about 55 knots airspeed, and the pilot applied the brakes. The airplane did not slow and departed the left side of the runway. The airplane continued approximately 900 feet after touchdown, before it collided with terrain, and came to rest inverted resulting in substantial damage to the wings. After the accident, the pilot could not recall if he had reduced the throttle upon landing. Examination of the cockpit revealed that the flight controls, engine controls, and the hand-operated brake control were of a non-standard configuration, and all had matching red handles. It was also noted that application of the brakes required the pilot to release the control stick. Other than the known wing and brake anomalies, the pilot reported no mechanical deficiencies with the airplane.
Aircraft
- Registration
- N344MK
- Reported as
- Koth Larry Jabiru Calypso
- Category
- Airplane, amateur-built
- Serial number
- 627
- Engine
- Jabiru 2200, 85 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Lafratta Paul M
- Registered owner
- Lafratta Paul M
- Airworthiness certificate
- Special, Experimental (Special)
- Departed
- 1B9 · Mansfield, MA
- Destination
- 1B9 · Mansfield, MA
- Airport
- 1B9 · Mansfield Municipal Airport, runway 32, 3,500 × 75 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
- 65
- Injuries
- Minor
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, With waivers/limitations
- Last flight review
- August 15, 2011
- Flight hours
- 2,404 total · 4 in this make and model · 6 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- 9,000 ft overcast
- Temperature
- 45 °F, dew point 28 °F
- Altimeter
- 30.04 inHg
- Observed at
- TAN, 11 nm away
Docket · 8
The files NTSB released with the investigation on January 30, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.7 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.