# NTSB ANC06CA045: Piper PA-22-150, N7257D, Birchwood, AK, April 15, 2006 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: April 15, 2006, 13:05 local (21:05 UTC) - Place: Birchwood, AK - Coordinates: 61.416389, -149.507217 - Nearby events: https://openairdocs.org/map.md?lat=61.4164&lon=-149.5072&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report August 29, 2006 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: FAA Anchorage, FSDO-03 - NTSB case key (mKey): 63507 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC06CA045 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/63507/pdf - Page: https://openairdocs.org/ntsb/ANC06CA045 ## Probable cause The flight instructor's delayed remedial action during the landing roll, which resulted in the loss of directional control by the student, a ground-loop, and collapse of the main landing gear. A factor associated with the accident was the student's failure to maintain directional control. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - directional control - not maintained, dual student (contributing factor) - remedial action - delayed, pilot in command(cfi) (cause) - Gear collapsed, landing - roll - landing gear,main gear - collapsed - On ground/water encounter with terrain/water, landing - roll - terrain condition - ground ## Analysis The certificated flight instructor was providing dual instruction under Title 14, CFR Part 91. The flight instructor said during landing the student over-corrected with the rudder, causing the airplane to swerve to the right, and then over-corrected again by applying full left rudder. He said as he attempted to take control of the airplane, the student applied full right rudder, and the airplane swerved to the right. The instructor said the swerve to the right was more than he could correct, because there are no brakes on the rudder pedals on the right side of the airplane. He said the airplane ground-looped to the right, and the left main landing gear collapsed, resulting in structural damage to the left wing and fuselage. The instructor said there were no known mechanical problems with the airplane prior to the accident. In his written report to the NTSB, he wrote: "I should have recognized the student's over controlling sooner, and assumed control of the airplane prior to the ground-loop actually happening." ## Factual narrative The certificated flight instructor was providing dual instruction under Title 14, CFR Part 91. The flight instructor said during landing the student over-corrected with the rudder, causing the airplane to swerve to the right, and then over-corrected again by applying full left rudder. He said as he attempted to take control of the airplane, the student applied full right rudder, and the airplane swerved to the right. The instructor said the swerve to the right was more than he could correct, because there are no brakes on the rudder pedals on the right side of the airplane. He said the airplane ground-looped to the right, and the left main landing gear collapsed, resulting in structural damage to the left wing and fuselage. The instructor said there were no known mechanical problems with the airplane prior to the accident. In his written report to the NTSB, he wrote: "I should have recognized the student's over controlling sooner, and assumed control of the airplane prior to the ground-loop actually happening." ## Aircraft - Registration: [N7257D](https://openairdocs.org/aircraft/N7257D), registered now, S/N 22-5084, built 1957 (OpenAirDocs) - Reported make and model: PIPER PA-22-150 - Registry model: [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150) (registry code 7102210) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 22-5084 - Airframe hours: 4074 - Engines: Lycoming O-320 150 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Roger Clyne - Registered owner: Roger Clyne - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 1, 2006 - Departed: PAVB, Birchwood, AK - Airport: BCV, Birchwood, runway 19R, 4,010 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 45; injuries: none; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1; last flight review October 1, 2005; seat: right; flight hours: 16,000 total, 100 in this make and model, 200 in the last 90 days, 25 in the last 30 days - Student pilot; age 47; injuries: none; student; medical: class 3; flight hours: 33 total, 16 in this make and model, 6 in the last 90 days, 6 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 250° at 7 knots - Visibility: 50 statute miles - Lowest ceiling: none ## 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 20060415007169A](https://openairdocs.org/incident/20060415007169A), Apr 15, 2006: Piper PA22150, Birchwood, AK, Substantial damage. (-23) During an interview regarding this accident, [privacy data omitted] a certificated flight instructor, stated that he failed to maintain adequate… ## Other investigations on N7257D (2) 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 GAA18CA324](https://openairdocs.org/ntsb/GAA18CA324), Jun 4, 2018: Piper PA 22 (N7257D), Talkeetna, AK, substantial damage. Probable cause: The flight instructor’s improper landing flare and failure to maintain a proper descent rate during approach, which resulted in a hard landing. - [NTSB ANC12CA039](https://openairdocs.org/ntsb/ANC12CA039), May 14, 2012: Piper PA-22-150 (N7257D), Talkeetna, AK, substantial damage. Probable cause: The pilot's failure to maintain directional control of the tailwheel-equipped airplane during landing, which resulted in a ground loop. Contributing to the accident was the flight instructor's… 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.