# NTSB GAA18CA407: Beech 58, N66568, Mackinac Island, MI, July 1, 2018 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 1, 2018, 12:00 local (16:00 UTC) - Place: Mackinac Island, MI - Coordinates: 45.863334, -84.644165 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=45.8633&lon=-84.6442&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 18, 2019 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 97723 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA407 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/97723/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=97723 - Page: https://openairdocs.org/ntsb/GAA18CA407 ## Probable cause 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. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Inspection: preflight inspection](https://openairdocs.org/ntsb-findings/02061510): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-findings/02061510/cases.md?model=1152746), [All aircraft, 551 cases](https://openairdocs.org/ntsb-findings/02061510/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=1152746), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Action: lack of action](https://openairdocs.org/ntsb-findings/02041030): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-findings/02041030/cases.md?model=1152746), [All aircraft, 792 cases](https://openairdocs.org/ntsb-findings/02041030/cases.md) - [Aircraft capability: landing distance](https://openairdocs.org/ntsb-findings/01061030): Aircraft › Aircraft oper/perf/capability · Capability exceeded (probable cause); cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-findings/01061030/cases.md?model=1152746), [All aircraft, 68 cases](https://openairdocs.org/ntsb-findings/01061030/cases.md) - [Pneumatic system: pneumatic indicating system](https://openairdocs.org/ntsb-findings/01023620): Aircraft › Aircraft systems · Inadequate inspection (probable cause); cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-findings/01023620/cases.md?model=1152746), [All aircraft, 1 case](https://openairdocs.org/ntsb-findings/01023620/cases.md) - [Object/animal/substance: fence/fence post](https://openairdocs.org/ntsb-findings/03022047): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-findings/03022047/cases.md?model=1152746), [All aircraft, 313 cases](https://openairdocs.org/ntsb-findings/03022047/cases.md) - [Terrain: sloped/uneven terrain](https://openairdocs.org/ntsb-findings/03021017): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-findings/03021017/cases.md?model=1152746), [All aircraft, 270 cases](https://openairdocs.org/ntsb-findings/03021017/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Flight instrument malf/fail](https://openairdocs.org/ntsb-events/334); cases with it: [Beech 58TC, 1 case](https://openairdocs.org/ntsb-events/334/sequence.md?model=1152746), [All aircraft, 56 cases](https://openairdocs.org/ntsb-events/334/sequence.md) - [Takeoff-rejected takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230); cases with it: [Beech 58TC, 2 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=1152746), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300) (defining event); cases with it: [Beech 58TC, 2 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=1152746), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Takeoff-rejected takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Beech 58TC, 2 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=1152746), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis 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." ## Factual narrative The pilot of the twin-engine airplane reported that during the takeoff roll on the 3,500-foot runway the airplane's 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 grass area and struck a wood fence. During a post-accident inspection the pilot discovered that the pitot tube cover had not been removed before the flight. According to the manufacturer, the typical takeoff roll is approximately 1,336 feet and the approximate landing roll is 1,440 feet. 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. He will now add, "chocks, cowl plugs, pitot tube covers". ## Aircraft - Registration: [N66568](https://openairdocs.org/aircraft/N66568), registered now, S/N TK-105 (OpenAirDocs) - Reported make and model: Beech 58 (TC) - Registry model: [Beech 58TC](https://openairdocs.org/model/beech-58tc) (registry code 1152746) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: TK-105 - Year built: 1979 - Airframe hours: 4401.4 - Engines: Continental TSIO-520-WB 325 horsepower reciprocating; Continental TSIO-520-WB 325 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 26, 2018 - Departed: MCD, Mackinac Island, MI - Destination: DPA, Chicago/West Chicago, IL - Flight plan: IFR - Airport: MCD, Mackinac Island, runway 26, 3,501 × 75 ft, asphalt - Equipment: Onboard weather, Electronic flight bag or handheld device, Auto-pilot, ADS-B, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 68; injuries: none; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review June 6, 2018; seat: left; restraint: 3-point; flight hours: 2,917 total, 2,131 in this make and model, 2,302 as pilot in command, 53 in the last 90 days, 19 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 81 °F, dew point 64 °F - Altimeter: 29.85 inHg - Observed at: KMCD ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20180701008969A](https://openairdocs.org/incident/20180701008969A), Jul 1, 2018: Beech 58TC, Macinac Island, MI, Substantial damage. Aircraft departed runway end while braking during aborted takeoff attempt due to no airspeed indicated to PIC. Aircraft slid into and partially through airport… ## Docket (4 files) The files NTSB released with the investigation on October 10, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=97723. 1.2 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 856 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40467296&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Pictures (item 2, .PDF, 181 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40467297&FileExtension=.PDF&FileName=Accident%20Pictures-Master.PDF - Pilot ROC (item 3, .PDF, 100 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40467298&FileExtension=.PDF&FileName=Pilot%20ROC-Master.PDF - Performance Data (item 4, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40467299&FileExtension=.PDF&FileName=Performance%20Data-Master.PDF From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.