SEA07CA032

NTSB accident investigation · Riley D-16A · Point Roberts, WA · December 1, 2006

Accident · No injuriesData collectionFinal report
Date
December 1, 2006, 14:15 local (22:15 UTC)
Place
Point Roberts, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N119NRiley D-16A
Weather
Visual (VMC) · Day
Status
Completed · report March 26, 2007
Report
Approved by Office Director
FAA report
20061201029229A
Case key
65000

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 NTSB’s determination of the probable cause, and any contributing factors.

the pre-existing crack in the nose wheel fork, which allowed separation of the nose wheel during the takeoff roll, resulting in collapse of the nose landing gear.

Analysis

According to the pilot, during the takeoff roll at about rotation speed, he felt the nose landing gear of the airplane "give way" and the airplane began to drift to the left. As he applied right rudder to correct the yaw, he felt "a continued collapse" of the nose landing gear and elected to abort the takeoff. The airplane's nose and both propellers struck the ground. Examination of photos provided by an insurance adjustor revealed that both engines were displaced down and to the right. The right engine firewall was torn from the engine nacelle, and the left engine firewall was buckled and distorted. Additionally, the photos revealed that the nose landing gear fork had broken into two pieces, which allowed the nose wheel to separate from the airplane, resulting in collapse of the nose landing gear. The pilot reported that "an aircraft structural engineer made the observation that my nose gear fork had an old hidden crack that could have contributed to the failure."

Factual narrative

On December 1, 2006, about 1415 Pacific standard time, a Riley D-16A twin-engine airplane, N119N, sustained substantial damage when the nose landing gear collapsed during takeoff roll on runway 16 at Point Roberts Airpark, Point Roberts, Washington. The private pilot, the sole occupant, was not injured. The airplane was registered to and operated by the pilot. Visual meteorological conditions prevailed and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91. The flight was originating when the accident occurred.

According to the pilot, during the takeoff roll at about rotation speed, he felt the nose landing gear of the airplane "give way" and the airplane began to drift to the left. As he applied right rudder to correct the yaw, he felt "a continued collapse" of the nose landing gear and elected to abort the takeoff. The airplane's nose and both propellers struck the ground.

Examination of photos provided by an insurance adjustor revealed that both engines were displaced down and to the right. The right engine firewall was torn from the engine nacelle, and the left engine firewall was buckled and distorted. Additionally, the photos revealed that the nose landing gear fork had broken into two pieces, which allowed the nose wheel to separate from the airplane, resulting in collapse of the nose landing gear. The pilot reported that "an aircraft structural engineer made the observation that my nose gear fork had an old hidden crack that could have contributed to the failure."

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionTakeoff - roll/run
Landing gear,nose gear - crackedCause
Landing gear,wheel - separationCause
Nose gear collapsedTakeoff - roll/run

Aircraft

Registration
N119N
Reported as
Riley D-16A
Category
Airplane
Serial number
TTN-51
Engines
Lycoming O-340, reciprocatingLycoming O-340, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Jesse H. Lofquist
Airworthiness certificate
Standard, Normal
Departed
1RL · Point Roberts, WA
Destination
1RL
Airport
1RL · Point Roberts Airpark, runway 16

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
39
Certificates
Private, Foreign
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3
Flight hours
947 total · 79 in this make and model

Weather

Conditions
Visual (VMC) · Day

FAA reports on this event · 1

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