Friday, April 1, 2016

Lancair IV-P Propjet, N992BC, N992BC Properties LLC: Accident occurred April 01, 2016 at Addison Airport (KADS), Dallas, Texas

N992BC PROPERTIES LLC:  http://registry.faa.gov/N992BC

FAA Flight Standards District Office:  FAA Dallas FSDO-05

Aviation Accident Factual Report  -   National Transportation Safety Board:   http://app.ntsb.gov/pdf

Docket And Docket Items -   National Transportation Safety Board:   http://dms.ntsb.gov/pubdms

NTSB Identification: CEN16LA153
14 CFR Part 91: General Aviation
Accident occurred Friday, April 01, 2016 in Addison, TX
Aircraft: GILL CRAIG LANCAIR IV P PROPJET, registration: N992BC
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On April 1, 2016, about 1720 central daylight time, an experimental, amateur-built Gill Lancair IV-P Propjet airplane, N992BC, was substantially damaged during landing on runway 33 (7,203 feet by 100 feet, asphalt) when the nose landing gear collapsed resulting in a runway excursion at the Addison Airport (ADS), Addison, Texas. The pilot was not injured. The airplane was registered to N992BC Properties LLC and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was operated on an instrument flight rules flight plan. The flight originated from the Georgetown Municipal Airport (GTU), Georgetown, Texas, about 0930.

The pilot reported that on his initial approach to runway 33, a gusty wind condition caused the airplane to "balloon" on short final and he elected to execute a go-around. On the second approach, the airplane touched down "just left" of the runway centerline, about 1,000 feet from the approach threshold. However, when the pilot placed the propeller into beta, the nose landing gear collapsed. He was unable to maintain directional control and the airplane subsequently departed the right side of the runway. He "felt a loud bang" after the airplane had exited the runway pavement. He noted that the left landing gear strut had failed above the wheel and the strut dug into the ground before the airplane came to rest.

Video footage from cameras positioned at the approach end of the runway was provided by airport management. The airplane initially touched down on the right main landing gear, followed by the left main landing gear. The right main wheel appeared to leave the pavement momentarily before settling back down. Shortly afterward, the nose landing gear collapsed. The airplane subsequently veered to the right and departed the runway pavement. The airplane continued to travel through the grass area adjacent to the runway and rotated abruptly to the right immediately before coming to rest.

Federal Aviation Administration (FAA) inspectors identified runway propeller strike and tire skid marks attributable to the accident airplane. A line of propeller strike marks began at the runway number markings, about 10 feet left of the centerline, and appeared to initially parallel the runway centerline. Small fiberglass fragments were located near the strike marks. Shortly afterward, the strike marks began tracking toward the right side of the runway. The strike marks were joined by a set of three tire skid marks. The center mark was defined by two uniform marks consistent with being formed by the edges of the tire. This mark was collocated with the propeller strike marks and was continuous until it reached the right side of the runway pavement. The left and right tire skid marks were also continuous to the edge of the runway pavement; however, they were lighter/more faint and narrower than the center skid mark. The skid marks continued as ruts in the adjacent grass area and led to the accident site.

A postaccident examination of the airplane landing gear system by FAA inspectors did not identify any anomalies consistent with a preimpact failure or malfunction. The nose landing gear was collapsed/retracted. The left main landing gear strut had separated near the wheel assembly; the fracture surface appeared consistent with an overstress failure. The right main landing gear remained extended and appeared intact. The nose landing gear doors, lower engine cowling, and both wings were damaged. The nose landing gear strut, wheel assembly, support structure, extension/retraction linkage and hydraulic actuator appeared to be intact. The actuator did not exhibit any evidence of leakage.


Normal extension and retraction of the nose landing gear is provided by a hydraulic actuator. Landing gear extension begins when the pilot moves the cockpit landing gear handle to the down position, which directs hydraulic fluid to the extension side of the actuators. A pressure switch is incorporated into the system in order to maintain hydraulic system pressure. Once the nose landing gear is fully extended, the over-center linkage is intended to react the operating loads and to keep the nose landing gear in the down position until retraction is commanded by the pilot. Within its capability, the hydraulic actuator will resist movement of the over-center linkage provided the hydraulic system is operating normally. The emergency extension gas strut will also provide this function, within the limits of its capability.

NTSB Identification: CEN16LA153
14 CFR Part 91: General Aviation
Accident occurred Friday, April 01, 2016 in Addison, TX
Aircraft: GILL CRAIG LANCAIR IV P PROPJET, registration: N992BC
Injuries: 1 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On April 1, 2016, about 1720 central daylight time, an experimental, amateur-built Gill Lancair IV-P Propjet airplane, N992BC, was substantially damaged during landing when the nose landing gear collapsed resulting in a runway excursion at the Addison Airport (ADS), Addison, Texas. The pilot was not injured. The airplane was registered to N992BC Properties LLC and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was operated on an instrument flight rules flight plan. The flight originated from the Georgetown Municipal Airport (GTU), Georgetown, Texas, about 0925.

The pilot reported that on his initial approach to runway 33, a gusty wind condition caused the airplane to "balloon" on short final and he elected to execute a go-around. On the second approach, the airplane touched down "just left" of the runway centerline, about 1,000 feet from the approach threshold. However, when the pilot placed the propeller into beta, the nose landing gear collapsed. He was unable to maintain directional control and the airplane subsequently departed the right side of the runway. The left main wheel separated from the landing gear strut during the excursion. In addition, both wings were damaged and the left ventral strake separated from the aft fuselage.





A pilot escaped injury after his experimental aircraft collapsed upon landing at Addison Airport Friday morning.

According to Lynn Lunsford with the Federal Aviation Administration, the landing gear of the single-engine aircraft collapsed when the plane touched down.

After landing, the plane appears to have skidded off Runway 33 and onto a grassy area between the runway and taxiway, where it came to rest after spinning back toward the runway.

Lunsford said one person was on board the aircraft and that no injuries have been reported.

The FAA registry identified the aircraft as an experimental Lancair IV-P Prop Jet. 

Extensive damage was visible to the aircraft's prop and wing structure.

The landing was the second attempt for the pilot who abandoned the first attempt due to strong crosswinds, Lunsford said.

Officials did not say where the flight was coming from, but the plane is registered to an owner in Georgetown.

The airport is closed to arriving traffic until the aircraft can be removed.

Story, video, photo gallery:  http://www.nbcdfw.com







ADDISON (CBSDFW.COM) — No injuries were reported after landing gear collapsed on a single engine aircraft at the Addison airport Friday morning.

There was no word yet on whether the plane was landing or taking off at the time.

Images from Chopper 11 showed the craft just off the runway at the airport with damage clearly visible.

Lynn Lunsford with the Federal Aviation Administration told CBS DFW that the runway at the airport would be closed until the aircraft could be removed.

There was one person on board according to the FAA.

1 comment:

Mike Smith said...

I was taxing down Alpha & watched his go-around & the "collapse". The gear collapsed is one way of stating it. Another way would be (1) He did a go-around because it appeared he did not know how to align the aircraft for the first crosswind landing and that (2) His gear snapped due to severe side-loading on the second attempt BECAUSE there was incorrect compensate for the crosswind. There was nothing wrong with that aircraft's gear until AFTER it met the runway, angled 35-40 degrees left of center-line. This was not a malfunction.