Saturday, January 18, 2020

Beech 76 Duchess, N6630D: Accident occurred January 16, 2020 at St. Charles County Smartt Airport (KSET), Missouri

Aviation Accident Final Report - National Transportation Safety Board

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; St. Louis, Missouri

Investigation Docket - National Transportation Safety Board:

Location: St. Charles, Missouri 
Accident Number: CEN20CA062
Date & Time: January 16, 2020, 12:45 Local Registration: N6630D
Aircraft: Beech 76 Aircraft Damage: Substantial
Defining Event: Injuries: 2 None
Flight Conducted Under: Part 91: General aviation - Instructional


The pilot receiving instruction and flight instructor were performing a zero-thrust, single-engine, fullstop landing when a sink rate developed on final approach. Subsequently, the instructor told the pilot to "add a small amount of power to the right operating engine." The pilot misunderstood the instruction as "abort" and added full power to the right engine to abort the landing. The airplane rolled left, and the instructor added right rudder to arrest the roll. The left wing hit the ground; the airplane rotated left, which resulted in substantial damage to the left wing; and the landing gear collapsed. The instructor reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot receiving instruction's misunderstanding of the flight instructor's instruction and the pilot's and the instructor's insufficient use of rudder while adding power to the operating engine, which resulted in the airplane rolling left and the wing striking the ground. Contributing to the accident was the flight instructor's delayed remedial action.


Personnel issues Interpretation/understanding - Student/instructed pilot
Personnel issues Use of equip/system - Student/instructed pilot
Aircraft Lateral/bank control - Not attained/maintained
Personnel issues Use of equip/system - Student/instructed pilot
Personnel issues Use of equip/system - Instructor/check pilot
Aircraft Rudder control system - Incorrect use/operation
Personnel issues Delayed action - Instructor/check pilot

Factual Information

History of Flight

Approach-VFR pattern final Miscellaneous/other
Approach-VFR go-around Loss of control in flight
Approach-VFR go-around Attempted remediation/recovery
Landing Collision with terr/obj (non-CFIT)
Landing Landing gear collapse

Pilot Information

Certificate: Commercial 
Age: 52, Male
Airplane Rating(s): Single-engine land 
Seat Occupied: Left
Other Aircraft Rating(s): None 
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 With waivers/limitations
Last FAA Medical Exam: November 18, 2019
Occupational Pilot: No 
Last Flight Review or Equivalent: November 9, 2019
Flight Time: 461 hours (Total, all aircraft), 2 hours (Total, this make and model), 406 hours (Pilot In
Command, all aircraft), 13 hours (Last 90 days, all aircraft), 7 hours (Last 30 days, all aircraft), 3 hours (Last 24 hours, all aircraft)

Flight instructor Information

Certificate: Commercial; Flight instructor 
Age: 72, Male
Airplane Rating(s): Single-engine land; Single-engine sea; Multi-engine land
Seat Occupied: Right
Other Aircraft Rating(s): Helicopter 
Restraint Used: 3-point
Instrument Rating(s): Airplane 
Second Pilot Present: Yes
Instructor Rating(s): Airplane multi-engine; Airplane single-engine
Toxicology Performed: No
Medical Certification: BasicMed Without waivers/limitations
Last FAA Medical Exam: February 17, 2018
Occupational Pilot: Yes Last Flight Review or Equivalent: February 2, 2019
Flight Time: 15788 hours (Total, all aircraft), 706 hours (Total, this make and model), 97 hours (Last 90
days, all aircraft), 41 hours (Last 30 days, all aircraft), 2 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Beech
Registration: N6630D
Model/Series: 76 No Series
Aircraft Category: Airplane
Year of Manufacture: 1979
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: ME-221
Landing Gear Type: Tricycle 
Date/Type of Last Inspection: January 6, 2020 100 hour 
Certified Max Gross Wt.: 3900 lbs
Time Since Last Inspection: 10 Hrs
Engines: 2 Reciprocating
Airframe Total Time: 8478 Hrs as of last inspection
Engine Manufacturer:
ELT: Engine Model/Series: Unknown
Registered Owner:
Rated Power: 180 Horsepower
Operating Certificate(s) Held:Pilot school (141)

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC) 
Condition of Light: Day
Observation Facility, Elevation: 
Distance from Accident Site:
Observation Time: 
Direction from Accident Site:
Lowest Cloud Condition: Clear
Visibility: 10 miles
Lowest Ceiling: None 
Visibility (RVR):
Wind Speed/Gusts: 6 knots / 
Turbulence Type Forecast/Actual:  /
Wind Direction: 280°
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 30.75 inches Hg 
Temperature/Dew Point:
Precipitation and Obscuration:
Departure Point: St. Charles, MO (SET)
Type of Flight Plan Filed: None
Destination: St. Charles, MO (SET) 
Type of Clearance: None
Departure Time: 11:00 Local Type of Airspace: 

Airport Information

Airport: St Charles County Smartt SET 
Runway Surface Type: Asphalt
Airport Elevation: 436 ft msl 
Runway Surface Condition: Dry
Runway Used: 36 
IFR Approach: None
Runway Length/Width: 3800 ft / 75 ft VFR
Approach/Landing: Full stop;Traffic pattern

Wreckage and Impact Information

Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries:
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None 
Latitude, Longitude: 38.929164,-90.430831(est)

St. Charles Flying Service, Inc.
There was an incident with one of our flight school aircraft on January 16th, but no one was injured. Thank you all for your support and concern for our pilot and staff. Again, nothing was hurt but the airplane. The incident is being reviewed by the necessary factions, and will run that course. As our Multi Engine training is suspended for now, we will be up and running again soon, so just bear with us. Again, thank you so much for your support and understanding. We are truly blessed with some amazing customers, employees, and community. 

Stay safe out there, after all, the real danger is on the roads! 
St. Charles Flying Service, Inc.

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