# NTSB ANC05LA127: Piper PA-22-150, N4774A, Tyonek, AK, August 6, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 5, 2005, 20:45 local (Aug 6, 2005, 04:45 UTC) - Place: Tyonek, AK - Coordinates: 61.016666, -151.566665 - Nearby events: https://openairdocs.org/map.md?lat=61.0167&lon=-151.5667&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report January 31, 2006 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: Anchorage FSDO-03 - NTSB case key (mKey): 62299 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC05LA127 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62299/pdf - Page: https://openairdocs.org/ntsb/ANC05LA127 ## Probable cause The instructor pilot's inadvertent touchdown during a low pass, and attempted go-around, which resulted in an in-flight collision with terrain, and nose over. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water encounter with terrain/water, go-around (vfr) - go-around - attempted, pilot in command(cfi) - terrain condition - ground - touchdown - inadvertent, pilot in command(cfi) (cause) - Nose over, landing - roll ## Analysis The 14 CFR Part 91 instructor pilot was providing instruction while scouting an off-site landing area. He said during a low pass the airplane started to settle, and he applied power to climb, but the engine failed to respond. He said the airplane touched down, and during the landing roll the airplane nosed over. In his written statement to the NTSB, the pilot wrote that the throttle should have been applied more slowly for the go-around, and that there were no mechanical malfunctions or failures associated with the accident. ## Factual narrative On August 5, 2005, about 2045 Alaska daylight time, a Piper PA-22-150 airplane, N4774A, sustained substantial damage when it collided with terrain during a low pass, about 16 miles west of Tyonek, Alaska. The airplane was being operated by the pilot as a visual flight rules (VFR) instructional flight under Title 14, CFR Part 91, when the accident occurred. The flight instructor and student pilot were not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated at the Wolf Lake Airport, Palmer, Alaska, about 1920. In a written statement to the National Transportation Safety Board (NTSB) dated August 11, the flight instructor reported that they were scouting a suitable off airport landing site near a fishing stream. He wrote that while examining a potential landing site during a low pass about 10 feet above the ground, the airplane started to settle. He said when he applied power the engine failed to respond, and the airplane touched down and nosed over during the landing roll. In the written statement to the NTSB the flight instructor stated the throttle "should have been applied slowly on the go-around." The airplane received structural damage to the vertical stabilizer and rudder. The flight instructor also noted in his report that there were no mechanical malfunctions or failures associated with the accident. ## Aircraft - Registration: [N4774A](https://openairdocs.org/aircraft/N4774A), registered now, S/N 22-3923, built 1956 (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: 22-3923 - Airframe hours: 2495 - Engines: Lycoming O-320 150 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Edward McKendry - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 1, 2005, 4 hours before - Departed: 4AK6, Wolf Lake, AK - Destination: Tyonek, AK ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 53; injuries: none; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2; flight hours: 5,419 total, 300 in this make and model, 5,205 as pilot in command, 120 in the last 90 days, 40 in the last 30 days, 12 in the last 24 hours - Student pilot; age 58; injuries: none; student; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; flight hours: 106 total, 26 in this make and model, 19 as pilot in command, 33 in the last 90 days, 18 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 8 knots - Visibility: 50 statute miles - Lowest ceiling: none - Temperature: 61 °F ## 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 20050805019719A](https://openairdocs.org/incident/20050805019719A), Aug 5, 2005: Piper PA22150, Tyonek, AK, Substantial damage. (-23) During a practice approach with no intent to land at an off-airport landing area the aircraft began to settle. Power was applied rapidly to stop the sink… 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.