MIA08LA205

NTSB accident investigation · Diamond Aircraft Ind DA42 · Lancaster, PA · September 28, 2008

Accident · No injuriesLimited investigationFinal report
Date
September 28, 2008, 18:00 local (22:00 UTC)
Place
Lancaster, PA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N482TSDiamond Aircraft Ind DA42
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report June 11, 2009
Report
Approved by Office Director
Parties
FAA/FSDO
FAA report
20080928853199A
Case key
69050

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 improper flare which resulted in a hard landing. Contributing to the accident was the pilot's lack of experience in the accident airplane make and model.

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.

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 reported that he was making his first flight in the accident airplane make and model. During the landing the airplane bounced, floated, and landed again. The nose gear collapsed and the airplane came to a stop on the runway. He added that the landing was not rough or hard. Inspection of the airplane revealed evidence of a hard landing; the left main landing gear was twisted and the gear strut had bottomed out. The nose gear was in the extended position; however it was forced up through the top of the gear well, damaging the surrounding structure. The wind at the accident airport, about the time of the accident, was 330 degrees at 4 knots.

Factual narrative

On September 28, 2008, about 1800 eastern daylight time, a Diamond DA42, N482TS, was substantially damaged during landing at the Lancaster Airport (LNS), Lancaster, Pennsylvania. The airplane was owned and operated by Onyx Acquisitions, LLC of Leesburg, Virginia. The certificated commercial pilot and pilot-rated passenger were not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the positioning flight conducted under 14 Code of Federal Regulations (CFR) Part 91. The flight originated at Leesburg Executive Airport (JYO), Leesburg, Virginia, at 1700. The airplane was being ferried to Lancaster for an annual inspection. Both pilots were flight instructors for AV-ED Flight School; the pilot in the right seat reported that he was receiving a checkout from the pilot in the left seat. The pilot in the right seat reported that this was his first flight in a DA 42, and he was at the controls during the entire accident flight. Both pilots reported that the en route portion of the flight was normal and "three green" indications were observed after lowering the landing gear on approach to Lancaster. The flying pilot reported the airplane "hopped off the ground" after the initial touchdown, and then settled on the main gear. As he lowered the nose to the runway, the nose gear collapsed and the airplane came to a stop approximately 1,000 feet from touchdown. The flying pilot reported that the landing was not "hard." An inspector with the Federal Aviation Administration (FAA) interviewed the Director of Operations at AV ED Flight School on October 29, 2008. The Director of Operations reported that the non-flying pilot informed him that the airplane was flared too soon and "stopped flying" about 10 to 15 feet above the runway. The airplane subsequently "made a hard landing which caused substantial damage to the aircraft." The non-flying pilot was interviewed by the National Transportation Safety Board investigator-in-charge on April 7, 2009. He reported that after the initial touchdown, the airplane "floated" before touching down again. He stated that the DA42 rarely bounces and this was uncharacteristic of the airplane. He did not consider the landing "hard." When asked if the nose gear could have touched down first, he replied "no," however the airplane did touch down in a "flat" attitude. Following the accident, the airplane was examined by an engineer from Diamond Aircraft Corporation as part of a repair assessment. The examination revealed that the nose gear assembly had breached the top of the wheel well substantially damaging the surrounding structure. In addition, during the assessment, a laser line was positioned on each main gear strut to determine the position of the main gear trailing arms. When the left and right hand trailing arms were compared, the left hand trailing arm was twisted approximately 10 degrees. The corresponding wheel/tire was toed out and had a negative camber. There was no wear patterns on theleft tire identified that could be associated with prolonged operation in this condition. A small nick was found on the left-hand trailing arm, indicating that the dampener bottomed out and the trailing arm had made contact with the left main strut. The flying pilot possessed commercial and flight instructor certificates with airplane single- and multi-engine land ratings. He reported 741 hours total flight time, including 154 hours of multi-engine time. He reported no flight time in the DA42 prior to the accident flight. The non-flying pilot possessed commercial and flight instructor certificates with airplane single- and multi-engine land ratings. He reported 1,070 hours total flight time, including 230 hours of multi-engine time. He reported 70 hours of flight time in the DA42 at the time of the accident. The 1753 weather observation for LNS included the following: surface winds from 330 degrees at 4 knots, 10 statute miles visibility, an overcast ceiling at 4,600 feet, temperature 68 degrees Fahrenheit, dew point 64 degrees Fahrenheit, and an altimeter setting of 29.89 inches of mercury.

Aircraft

Registration
N482TS
Reported as
Diamond Aircraft Ind DA42
Category
Airplane
Serial number
42.AC082
Airframe hours
229
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Onyx Acquisitions LLC
Registered owner
Onyx Acquisitions LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 12, 2007
Departed
JYO · Leesburg, VA
Destination
LNS · Lancaster, PA
Flight plan
VFR
Airport
LNS · Lancaster Airport, runway 31, 4,102 × 100 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
47
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
August 14, 2008
Seat
Right
Flight hours
741 total · 1 in this make and model · 619 as pilot in command · 114 in the last 90 days · 55 in the last 30 days · 4 in the last 24 hours
Role
Flight instructor
Age
33
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
November 11, 2006
Seat
Left
Flight hours
1,070 total · 70 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 4 knots
Visibility
10 statute miles
Lowest ceiling
4,600 ft overcast
Temperature
68 °F, dew point 64 °F
Altimeter
30.00 inHg
Observed at
KLNS

FAA reports on this event · 1

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