Wednesday, June 19, 2019

Runway Excursion: Beech 58TC Baron, N66568, accident occurred July 01, 2018 at Mackinac Island Airport (KMCD), Mackinac County, Michigan

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Grand Rapids

Aviation Accident Final Report - National Transportation Safety Board:

Investigation Docket  - National Transportation Safety Board:

Aviation Accident Data Summary - National Transportation Safety Board:

Location: Mackinac Island, MI
Accident Number: GAA18CA407
Date & Time: 07/01/2018, 1200 EDT
Registration: N66568
Aircraft: Beech 58
Aircraft Damage: Substantial
Defining Event: Runway excursion
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal


The pilot of the twin-engine airplane reported that, during the takeoff roll on the 3,500-ft-long runway, the airspeed indicator did not indicate an airspeed, so he rejected the takeoff. He added that he attempted to brake, but "full braking [was] not initially possible due to lift." Subsequently, the airplane overran the runway onto a downhill grassy area and struck a fence.

During postaccident examination of the airplane, the pilot found that the pitot tube cover had not been removed before the flight.

According to the manufacturer, the typical takeoff roll is about 1,336 ft, and the approximate landing roll is 1,440 ft. If the pilot had rejected the takeoff sooner, he likely could have stopped the airplane on the runway.

The airplane sustained substantial damage to 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 added that his preflight memory list was: fuel, oil, tires, props, and surfaces and that he will now add "chocks, cowl plugs, pitot tube covers." 

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to remove the pitot tube cover during the preflight inspection, which resulted in his delayed decision to reject the takeoff with insufficient runway remaining to safely stop the airplane.


Landing distance - Capability exceeded (Cause)
Pneumatic indicating system - Inadequate inspection (Cause)

Personnel issues
Preflight inspection - Pilot (Cause)
Decision making/judgment - Pilot (Cause)
Lack of action - Pilot (Cause)

Environmental issues
Fence/fence post - Contributed to outcome
Sloped/uneven terrain - Contributed to outcome

Factual Information

History of Flight

Flight instrument malf/fail

Takeoff-rejected takeoff
Loss of control on ground
Runway excursion (Defining event)
Collision with terr/obj (non-CFIT) 

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 3 With Waivers/Limitations
Last FAA Medical Exam: 02/09/2018
Occupational Pilot: No
Last Flight Review or Equivalent: 06/06/2018
Flight Time:   (Estimated) 2917 hours (Total, all aircraft), 2131 hours (Total, this make and model), 2302 hours (Pilot In Command, all aircraft), 53 hours (Last 90 days, all aircraft), 19 hours (Last 30 days, all aircraft), 1 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Beech
Registration: N66568
Model/Series: 58 TC
Aircraft Category: Airplane
Year of Manufacture: 1979
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: TK-105
Landing Gear Type: Retractable - Tricycle
Seats: 6
Date/Type of Last Inspection: 03/26/2018, Annual
Certified Max Gross Wt.: 6200 lbs
Time Since Last Inspection:
Engines: 2 Reciprocating
Airframe Total Time: 4401.4 Hours as of last inspection
Engine Manufacturer: Continental
ELT: C126 installed, not activated
Engine Model/Series: TSIO-520-WB
Registered Owner: On file
Rated Power:325 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: KMCD, 740 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 1615 UTC
Direction from Accident Site: 72°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: Calm /
Turbulence Type Forecast/Actual: None / None
Wind Direction:
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.85 inches Hg
Temperature/Dew Point: 27°C / 18°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Mackinac Island, MI (MCD)
Type of Flight Plan Filed: IFR
Destination: Chicago/West Chicago, IL (DPA)
Type of Clearance: None
Departure Time: 1200 EDT
Type of Airspace: Class G

Airport Information

Runway Surface Type: Asphalt
Airport Elevation: 741 ft
Runway Surface Condition: Dry
Runway Used: 26
IFR Approach: None
Runway Length/Width: 3501 ft / 75 ft
VFR Approach/Landing: Full Stop; Precautionary Landing

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: 45.863333, -84.644167 (est)

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