Friday, January 10, 2020

Loss of Control in Flight: SIAI Marchetti SM-1019, N16XC; accident occurred September 07, 2019 in Lakeport, Lake County, California

View of fuselage and left wing damage.
Lake County Sheriff's Office

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Sacramento, California

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: Lakeport, CA
Accident Number: GAA19CA528
Date & Time: 09/07/2019, 1600 PDT
Registration: N16XC 
Aircraft: SIAI-MARCHETTI SM 1019
Aircraft Damage: Substantial
Defining Event: Loss of control in flight
Injuries: 2 Minor
Flight Conducted Under: Part 91: General Aviation - Personal

The pilot of the float-equipped airplane reported that, while taking off from a lake, the airplane accelerated, became airborne, and about 40 ft above the water, he retracted the flaps. The airplane pitched down and the left wing dropped. He attempted to correct to no avail and the airplane impacted the water.

The pilot reported that he believed P factor caused the left roll because the airplane was aerodynamically stalling and would not correct, despite his attempts.

The pilot reported that he had accrued 5 hours in the airplane make and model, 2 hours of which occurred in the preceding 30 days.

The airplane sustained substantial damage to the fuselage, empennage and both wings.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

The pilot reported that, it was a very windy, gusty day, and the wind varied in direction. An airport's automated weather observation station, located 15 miles west, reported that, about the time of the accident, the wind was from 300° at 14 knots, gusting to 20 knots. The airplane was departing to the south.

Pilot Information

Certificate: Private
Age: 72, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land; Single-engine Sea
Seat Occupied: Front
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 04/12/2019
Occupational Pilot: No
Last Flight Review or Equivalent: 01/09/2019
Flight Time:   (Estimated) 7777 hours (Total, all aircraft), 5 hours (Total, this make and model), 7777 hours (Pilot In Command, all aircraft), 64 hours (Last 90 days, all aircraft), 27 hours (Last 30 days, all aircraft), 5 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Registration: N16XC
Model/Series: SM 1019
Aircraft Category: Airplane
Year of Manufacture: 1979
Amateur Built: No
Airworthiness Certificate: Experimental
Serial Number: 045
Landing Gear Type: Amphibian
Seats: 2
Date/Type of Last Inspection: 06/03/2019, Annual
Certified Max Gross Wt.: 2800 lbs
Time Since Last Inspection:
Engines: 1 Turbo Prop
Airframe Total Time: 1639.05 Hours at time of accident
Engine Manufacturer: Allison
ELT: C126 installed, not activated
Engine Model/Series: 250-B15G
Registered Owner: Pacific Coast Air Museum
Rated Power:
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: KUKI, 626 ft msl
Distance from Accident Site: 15 Nautical Miles
Observation Time: 2256 UTC
Direction from Accident Site: 291°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 14 knots / 20 knots
Turbulence Type Forecast/Actual: None / None
Wind Direction: 300°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.99 inches Hg
Temperature/Dew Point: 22°C / 11°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Lakeport, CA
Type of Flight Plan Filed: None
Type of Clearance: None
Departure Time: 1554 PDT
Type of Airspace: Class G  

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: 1 Minor
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 Minor
Latitude, Longitude: 39.039444, -122.907778 (est)

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