# NTSB CEN11CA038: Cessna 182L, N808HC, Mancelona, MI, October 19, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 19, 2010, 15:30 local (19:30 UTC) - Place: Mancelona, MI - Coordinates: 44.897499, -85.055831 - Nearby events: https://openairdocs.org/map.md?lat=44.8975&lon=-85.0558&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute-cruise: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report April 12, 2011 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA- Grand Rapids FSDO - NTSB case key (mKey): 77648 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN11CA038 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/77648/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=77648 - Page: https://openairdocs.org/ntsb/CEN11CA038 ## Probable cause A loss of engine power in flight due to the failure of the engine's No. 5 piston. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Engine (reciprocating): recip eng cyl section](https://openairdocs.org/ntsb-findings/01058530): Aircraft › Aircraft power plant · Failure (probable cause); cases with it: [Cessna 182L, 1 case](https://openairdocs.org/ntsb-findings/01058530/cases.md?model=2072726), [All aircraft, 373 cases](https://openairdocs.org/ntsb-findings/01058530/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute-cruise: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Cessna 182L, 3 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=2072726), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Cessna 182L, 4 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=2072726), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that during cruise flight the airplane suddenly started shaking violently. He reduced the engine power and noticed the vibration diminished. The pilot selected a field and attempted an off-airport landing, during which the airplane nosed over. The airplane sustained substantial damage to the wings and vertical tail. A postaccident examination of the airplane's engine revealed that the No. 5 piston was fragmented. The engine had last been overhauled 17 years prior to the accident, and had accumulated 740 hours since the overhaul. ## Factual narrative The pilot reported that during cruise flight the airplane suddenly started shaking violently. He reduced power and the shaking was not as bad. The pilot selected a field and attempted an off-airport landing. During the landing, the "nose wheel dug in" and the airplane nosed over. The airplane sustained damage to the propeller, nose landing gear, wings, and vertical tail. Examination of the airplane's engine revealed that the number 5 piston was fragmented. The engine had last been overhauled on April 23, 1993, and had accumulated 740 hours since that overhaul. The logbook entry for the piston showed that it was a Superior Air Parts piston, part number SA640518. ## Aircraft - Registration: [N808HC](https://openairdocs.org/deregistered/N808HC-2011-06-18), registration cancelled 2011-06-18, S/N 18259299, built 1968 (OpenAirDocs) - Reported make and model: CESSNA 182L - Registry model: [Cessna 182L](https://openairdocs.org/model/cessna-182l) (registry code 2072726) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18259299 - Airframe hours: 2945 - Engines: CONT MOTOR O-470 SERIES 230 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 22, 2009, 38 hours before - Departed: GLR, Gaylord, MI - Destination: TVC, Traverse City, MI ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 49; injuries: none; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review July 22, 2010; seat: left; flight hours: 1,476 total, 250 in this make and model, 1,335 as pilot in command, 51 in the last 90 days, 22 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: 2,500 ft broken - Observed at: GLR, 20 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 20101019048019A](https://openairdocs.org/incident/20101019048019A), Oct 19, 2010: Cessna 182L, Mancelona, MI, Substantial damage. Pilot was flying with son from gaylord to traverse city at 3000FEET. When all of sudden the engine started shaking violently. The pilot reduced the power and… ## Docket (1 files) The files NTSB released with the investigation on December 10, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=77648. 3.2 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40340413&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.