# NTSB CEN10CA283: Cessna 182A, N4974D, Franksville, WI, June 2, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 1, 2010, 19:45 local (Jun 2, 2010, 00:45 UTC) - Place: Franksville, WI - Coordinates: 42.823612, -88.094444 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.8236&lon=-88.0944&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Flight instrument malf/fail](https://openairdocs.org/ntsb-events/334) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report October 21, 2010 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - Milwaukee FSDO - NTSB case key (mKey): 76184 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN10CA283 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76184/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76184 - Page: https://openairdocs.org/ntsb/CEN10CA283 ## Probable cause The pilot’s inadequate preflight inspection and delay in aborting the takeoff. ## 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: [Cessna 182A, 4 cases](https://openairdocs.org/ntsb-findings/02061510/cases.md?model=2072704), [All aircraft, 551 cases](https://openairdocs.org/ntsb-findings/02061510/cases.md) - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Incorrect use/operation (probable cause); cases with it: [Cessna 182A, 7 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=2072704), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) - [Info processing/decision: identification/recognition](https://openairdocs.org/ntsb-findings/02041510): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna 182A, 3 cases](https://openairdocs.org/ntsb-findings/02041510/cases.md?model=2072704), [All aircraft, 559 cases](https://openairdocs.org/ntsb-findings/02041510/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna 182A, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=2072704), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Prior to flight: Preflight or dispatch event](https://openairdocs.org/ntsb-events/030); cases with it: [Cessna 182A, 1 case](https://openairdocs.org/ntsb-events/030/sequence.md?model=2072704), [All aircraft, 355 cases](https://openairdocs.org/ntsb-events/030/sequence.md) - [Takeoff: Flight instrument malf/fail](https://openairdocs.org/ntsb-events/334) (defining event); cases with it: [Cessna 182A, 1 case](https://openairdocs.org/ntsb-events/334/sequence.md?model=2072704), [All aircraft, 56 cases](https://openairdocs.org/ntsb-events/334/sequence.md) - [Takeoff-rejected takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cessna 182A, 6 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2072704), [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: [Cessna 182A, 34 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072704), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Takeoff-rejected takeoff: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Cessna 182A, 15 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=2072704), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that the airspeed indicator was not displaying normal values as the airplane accelerated on the takeoff roll. After identifying the airspeed indicator anomaly, she continued the takeoff roll for an unspecified distance before ultimately deciding to abort the takeoff. The pilot noted that there was an accumulation of dew on the grass runway. During the rejected takeoff, the airplane overran the end of the runway and slid down an embankment before nosing-over in a ravine. Both wings were substantially damaged during the accident. A postaccident inspection revealed that the pilot had not removed the pitot-tube protective cover before departure. ## Factual narrative The pilot reported that the airspeed indicator was not displaying normal values as the airplane accelerated on the takeoff roll. After identifying the airspeed indicator anomaly, she continued the takeoff roll for an unspecified distance before ultimately deciding to abort the takeoff. The pilot noted that there was an accumulation of dew on the grass runway. During the rejected takeoff, the airplane overran the end of the runway and slid down an embankment before nosing-over in a ravine. Both wings were substantially damaged during the accident. A inspection revealed that the pilot had not removed the pitot-tube protective cover before departure. ## Aircraft - Registration: [N4974D](https://openairdocs.org/aircraft/N4974D), registered now, S/N 51074, built 1958 (OpenAirDocs) - Reported make and model: Cessna 182A - Registry model: [Cessna 182A](https://openairdocs.org/model/cessna-182a) (registry code 2072704) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 51074 - Airframe hours: 2809 - Engines: Teledyne Continental Motors O-470-L 230 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 10, 2009 - Departed: 62C, Franksville, WI - Destination: 62C, Franksville, WI - Airport: 62C, Cindy Guntly Memorial Airport, runway 19, 2,425 × 70 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 49; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review May 14, 2009; seat: left; flight hours: 520 total, 477 in this make and model, 380 as pilot in command, 2 in the last 90 days, 2 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 160° at 8 knots - Visibility: 9 statute miles - Lowest ceiling: 25,000 ft broken - Temperature: 73 °F, dew point 61 °F - Altimeter: 29.76 inHg - Observed at: KMKE, 12 nm away ## 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 20100602038379A](https://openairdocs.org/incident/20100602038379A), Jun 2, 2010: Cessna 182A, Franksville, WI, Substantial damage. Pilot forgot to remove pitot cover during preflight. At rotate noticed no airspeed indication and aborted takeoff. Grass was wet, very poor braking, aircraft… ## Docket (1 files) The files NTSB released with the investigation on August 12, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76184. 747 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 747 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40333844&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.