Thursday, February 14, 2019

Cessna 310R, registered to and operated by the pilot as a 14 Code of Federal Regulations Part 91 personal flight, N1362G: Accident occurred April 08, 2017 at Lakeland Linder Regional Airport (KLAL), Polk County, Florida

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:  

Federal Aviation Administration / Flight Standards District Office; Orlando, Florida

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf


Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

http://registry.faa.gov/N1362G



Location: South Lakeland, FL
Accident Number: ERA17LA150
Date & Time: 04/08/2017, 1145 EDT
Registration: N1362G
Aircraft: CESSNA 310R
Aircraft Damage: Substantial
Defining Event: Landing gear collapse
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal 

Analysis 

The commercial pilot stated that he confirmed that the landing gear were down and locked before landing. After a smooth landing, the left wing began to sink. The pilot shut off the left engine, and the airplane veered left off the runway onto grass. The pilot then shut off the right engine. The left wing, left horizontal stabilizer, and left propeller assembly were substantially damaged.

Examination of the left main landing gear (MLG) revealed that the fork bolt was ripped out of the torque tube, which damaged the tube and precluded a gear retraction test. Visual examination of the left MLG revealed that the overcentering tension on the down-lock assembly appeared to be rigged incorrectly; however, it could not be determined if the misrigging led to the failure of the left MLG. A review of the airframe maintenance logbooks revealed no recent maintenance to the MLG assembly. Based on the available evidence, the reason for the left MLG collapse could not be determined. 

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The failure of the left main landing gear on landing for reasons that could not be determined due to the extent of damage sustained during the accident.

Findings

Not determined
Not determined - Unknown/Not determined (Cause)

Factual Information 

On April 8, 2017, about 1145 eastern daylight time, a Cessna 310R, N1362G, sustained substantial damage when the left main landing gear collapsed during landing at Lakeland Linder Regional Airport (LAL), Lakeland, Florida. The commercial pilot and passenger were not injured. The airplane sustained substantial damage. The airplane was registered to and operated by the pilot as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions were reported at the airport at the time of the accident and no flight plan was filed. The flight originated from North Perry Airport (HWO), Hollywood, Florida, about 1040 and was destined for LAL.

The pilot stated that he confirmed the landing gear was down and locked prior to landing. He said he landed "perfectly" but as the airplane rolled down the runway, the left wing began to sink. The pilot shut off the left engine, and the airplane veered to the left off the runway onto the grass. The pilot then shut off the right engine. When the airplane came to a stop, the pilot secured the airplane and he and his passenger exited. The left wing, and left horizontal stabilizer, and left propeller assembly were substantially damaged.

Examination of the left main landing gear revealed that the fork bolt was ripped out of the landing gear torque tube damaging the torque tube. As a result, the gear could not be retracted and tested to fully determine how the landing gear failed. However, visual examination of the landing gear revealed the over-centering tension on the down lock assembly did not appear to be rigged correctly.

A review of the airframe maintenance logbooks revealed the last annual inspection was conducted on July 12, 2016, at a total time of 7,714.2 hours. The airplane accrued a total of 7,794 hours at the time of the accident. At that time, the landing gear was retracted, and a test of the emergency extension system was found satisfactory. No specific maintenance to the main landing gear system itself was identified then or during the annual inspection in 2015.

The pilot held a commercial pilot certificate with ratings for airplane single and multiengine land, and instrument airplane. His last Federal Aviation Administration first-class medical certificate was issued on September 19, 2016. At that time, he reported a total of 4,550 flight hours.

The weather conditions reported at LAL, at 1150, included wind 010° at 4 knots, visibility 10 miles, and clear skies. 

History of Flight

Landing-landing roll
Loss of control on ground

Landing gear collapse (Defining event)

Pilot Information

Certificate: Commercial
Age: 68, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 1 With Waivers/Limitations
Last FAA Medical Exam: 09/19/2016
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time: 4650 hours (Total, all aircraft), 140 hours (Total, this make and model)

Aircraft and Owner/Operator Information

Aircraft Make: CESSNA
Registration: N1362G
Model/Series: 310R R
Aircraft Category: Airplane
Year of Manufacture: 1976
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 310R0717
Landing Gear Type: Retractable - Tricycle
Seats: 6
Date/Type of Last Inspection: 07/12/2016, Annual
Certified Max Gross Wt.: 5501 lbs
Time Since Last Inspection:
Engines: 2 Reciprocating
Airframe Total Time: 7794 Hours at time of accident
Engine Manufacturer: CMI
ELT: Installed, not activated
Engine Model/Series: IO 520 M1B
Registered Owner: On file
Rated Power: 285 hp
Operator: On file
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: LAL, 142 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 1150 EDT
Direction from Accident Site: 0°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling:
Visibility (RVR):
Wind Speed/Gusts: 4 knots /
Turbulence Type Forecast/Actual: /
Wind Direction: 10°
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 30.14 inches Hg
Temperature/Dew Point: 21°C / -1°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: HOLLYWOOD, FL (HWO)
Type of Flight Plan Filed: None
Destination: South Lakeland, FL (LAL)
Type of Clearance: VFR; VFR Flight Following
Departure Time: 1040 EDT
Type of Airspace: Class D

Airport Information

Airport: LAKELAND LINDER RGNL (LAL)
Runway Surface Type: Asphalt
Airport Elevation: 142 ft
Runway Surface Condition: Dry
Runway Used: 27
IFR Approach: None
Runway Length/Width: 8499 ft / 150 ft
VFR Approach/Landing: Full Stop 

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 27.988889, -82.018611 (est)

NTSB Identification: ERA17LA150
14 CFR Part 91: General Aviation
Accident occurred Saturday, April 08, 2017 in South Lakeland, FL
Aircraft: CESSNA 310R, registration: N1362G
Injuries: 2 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 8, 2017, about 1140 eastern daylight time, a Cessna 310R, N1362G, sustained substantial damage when the left main landing gear collapsed during landing at Lakeland Linder Regional Airport (LAL), Lakeland, Florida. The commercial pilot and passenger were not injured. The airplane sustained substantial damage. The airplane was registered to and operated by the pilot as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions were reported at the airport at the time of the accident and no flight plan was filed. The flight originated from North Perry Airport (HWO), Hollywood, Florida, about 1030 and was destined for LAL.

The pilot stated that he confirmed the landing gear was down and locked prior to landing. He said he landed "perfectly" but as the airplane rolled down the runway, the left wing began to sink. The pilot shut off the left engine, and the airplane veered to the left off the runway onto the grass. The pilot then shut off the right engine. When the airplane came to a stop, the pilot secured the airplane and he and his passenger exited. The airplane was towed to a maintenance facility for further examination. The left wing, and left horizontal stabilizer, and left propeller assembly were substantially damaged.

The pilot held a commercial pilot certificate with ratings for airplane single and multiengine land, and instrument airplane. His last Federal Aviation Administration first-class medical certificate was issued on September 19, 2016. At that time, he reported a total of 4,550 flight hours.

The weather conditions reported at LAL, at 1150, included wind 010° at 4 knots, visibility 10 miles, and clear skies.

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