# NTSB ANC13CA086: Cessna 170B, N2583C, Anchorage, AK, August 27, 2013 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 27, 2013, 11:23 local (19:23 UTC) - Place: Anchorage, AK - Coordinates: 61.208057, -149.837493 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=61.2081&lon=-149.8375&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report December 2, 2013 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: FAA - NTSB case key (mKey): 87885 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC13CA086 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/87885/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=87885 - Page: https://openairdocs.org/ntsb/ANC13CA086 ## Probable cause The pilot's loss of control of the airplane during takeoff, resulting in a ground loop. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 170B, 91 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072306), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Cessna 170B, 84 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072306), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna 170B, 52 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072306), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot was taking off from a gravel airstrip in a tailwheel-equipped airplane. During the takeoff roll, the pilot said that the airplane began to veer to the left despite his attempts to correct with right rudder. He decreased the engine power, but the left wheel caught a berm, and the airplane ground looped, sustaining substantial damage to the left wing. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative The pilot was taking off from a gravel airstrip in a tailwheel-equipped airplane. During the takeoff roll, the pilot said that the airplane began to veer to the left despite his attempts to correct with right rudder. He decreased the engine power, but the left wheel caught a berm, and the airplane ground looped, sustaining substantial damage to the left wing. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N2583C](https://openairdocs.org/aircraft/N2583C), registered now, S/N 26227 (OpenAirDocs) - Reported make and model: CESSNA 170B - Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 26227 - Airframe hours: 2136 - Engines: CONT MOTOR C145 SERIES 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, August 3, 2013 - Departed: MRI, Anchorage, AK - Destination: MRI, Anchorage, AK - Airport: MRI, Merrill Field, runway 23, 2,000 × 60 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 60; injuries: none; private; airplane ratings: single-engine sea, single-engine land; medical: class 3, waiver time limited special; last flight review July 9, 2013; seat: left; restraint: 4-point; flight hours: 202 total, 75 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: 7,000 ft broken - Temperature: 61 °F, dew point 52 °F - Altimeter: 29.78 inHg - Observed at: PAMR ## 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 20130827018119A](https://openairdocs.org/incident/20130827018119A), Aug 27, 2013: Cessna 170B, Anchorage, AK, Substantial damage. After the tail came up and the airspeed increased on the takeoff roll the aircraft veered to the left. The airman applied correction with right rudder.… ## Other investigations on N2583C (1) 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. - [NTSB ANC21LA059](https://openairdocs.org/ntsb/ANC21LA059), Jul 11, 2021: Cessna 170 (N2583C), Rampart, AK, substantial damage. Probable cause: The pilot’s selection of unsuitable terrain for landing, which resulted in a nose over. ## Docket (1 files) The files NTSB released with the investigation on November 20, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=87885. 701 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 701 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40403552&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.