LAX06CA167

NTSB accident investigation · Cessna 310N · Lincoln, CA · April 3, 2006

Accident · No injuriesData collectionFinal report
Date
April 2, 2006, 20:16 local (Apr 3, 2006, 03:16 UTC)
Place
Lincoln, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N5096QCessna 310N
Weather
Visual (VMC) · Night
Status
Completed · report August 29, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
Case key
63692

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 collapse of the nose gear due to an out of tolerance nose gear over center adjustment.

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.

Gear collapsedLanding - roll
Landing gear,gear locking mechanism - wornCause
Maintenance,inspection - inadequateOther maintenance personnelCause
Landing gear,nose gear - collapsed

Analysis

While transitioning from landing to taxiing the pilot experienced a bumping sound, which was followed by the collapse of the nose gear. Examination of photographs of the damage revealed that several inches of the nose fuselage structure had been ground down by contact with the runway pavement. The nose gear was examined by an airframe and power plant (A&P) mechanic. The mechanic reported that the nose gear drive tube was bent inboard 90 degrees, suggesting that the nose over center adjustment was out of tolerance, and a sufficient impact could cause the gear to unlock from the down position. There was no evidence of mechanical failure or foreign object damage.

Factual narrative

On April 2, 2006, at 2016 Pacific daylight time, a Cessna 310N, N5096Q, experienced a nose landing gear collapse during the landing roll at Lincoln Regional Airport, Lincoln, California. The student pilot operated the airplane under the provisions of 14 CFR Part 91. The pilot and passenger were not injured, and the airplane was substantially damaged. Night visual meteorological conditions prevailed, and no flight plan had been filed. The flight originated at Sacramento International Airport, Sacramento, California, at 1845.

The pilot stated in the Pilot/Operator report that while transitioning from landing to taxing he experienced a bumping sound, which was followed by the collapse of the nose gear. Examination of photographs of the damage revealed that several inches of the nose fuselage structure had been ground down by contact with the runway pavement. The National Transportation Safety Board investigator had the nose gear examined by an airframe and power plant (A&P) mechanic. The mechanic reported that the nose gear drive tube was bent inboard 90 degrees, suggesting that the nose over center adjustment was out of tolerance, and a sufficient impact could cause the gear to unlock from the down position. There was no evidence of mechanical failure or foreign object damage. The pilot reported that the last annual inspection occurred in May 2005.

Aircraft

Registration
N5096Q
Reported as
Cessna 310N
Category
Airplane
Serial number
310N-0196
Engines
Teledyen Continental IO-470, reciprocatingTeledyne Continental IO-470, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Robert Peterson
Registered owner
Robert Peterson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 2005
Departed
KSMF · Sacramento, CA
Destination
KLHM · Lincoln, CA
Airport
KLHM · Lincoln Regional, runway 15, 6,001 × 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

As NTSB recorded them. NTSB leaves out names.

Role
Student pilot
Age
47
Certificate
Student
Medical
Class 3
Flight hours
40 total · 10 in this make and model · 40 in the last 90 days

Weather

Conditions
Visual (VMC) · Night
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F