# NTSB ANC25LA006: Piper PA22, N694AB, Talkeetna, AK, October 25, 2024 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: October 25, 2024, 11:30 local (19:30 UTC) - Place: Talkeetna, AK - Coordinates: 62.297313, -150.14169 - Nearby events: https://openairdocs.org/map.md?lat=62.2973&lon=-150.1417&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Alaska Regional Office - Parties: FAA - NTSB case key (mKey): 195378 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC25LA006 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/195378/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=195378 - Page: https://openairdocs.org/ntsb/ANC25LA006 ## Probable cause The mechanical failure of the left main landing gear leg due to corrosion, resulting in substantial damage to the left struts. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Landing gear system: main landing gear](https://openairdocs.org/ntsb-findings/01023210): Aircraft › Aircraft systems · Damaged/degraded (probable cause); cases with it: [Piper PA-22-150, 1 case](https://openairdocs.org/ntsb-findings/01023210/cases.md?model=7102210), [All aircraft, 241 cases](https://openairdocs.org/ntsb-findings/01023210/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Piper PA-22-150, 15 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=7102210), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot reported that, after landing on a gravel bar in a tailwheel-equipped airplane, as he slowed to taxi speed, the left main gear leg failed. The airplane lost directional control and ground looped which resulted in substantial damage to the left wing struts. A postaccident examination of the main landing gear revealed a fracture in the landing gear tube at a point where it joins the inboard end of the axle likely due to corrosion. Apart from the corrosion found during the postaccident examination, the pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N694AB](https://openairdocs.org/aircraft/N694AB), registered now, S/N 22-5347, built 1957 (OpenAirDocs) - Reported make and model: PIPER PA22 (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: 22-5347 - Year built: 1957 - Airframe hours: 2360 - Engines: Lycoming O-320 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 13, 2024 - Departed: UUO, Willow, AK - Destination: Same as departure ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 31; injuries: none; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review July 25, 2024; seat: left; restraint: lap only; flight hours: 489.1 total, 177.2 in this make and model, 450 as pilot in command, 88.6 in the last 90 days, 19.2 in the last 30 days, 5.7 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 20° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 30 °F, dew point 18 °F - Altimeter: 29.87 inHg - Observed at: PATK, 2 nm away - METAR: PATK 251853Z 02005KT 10SM CLR M01/M08 A2987 RMK AO2 SLP123 T10111083 ## 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 20241025017369A](https://openairdocs.org/incident/20241025017369A), Oct 25, 2024: Piper PA-22-150, Talkeetna, AK, Substantial damage. Pilot was landing off airport on a gravel bar and upon slowing to taxi speed left main gear collapsed. Left wing tip, left lift struts and propeller were… ## Docket (3 files) The files NTSB released with the investigation on June 13, 2025, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=195378. 138 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 137 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17889127&FileExtension=pdf&FileName=6120%20Pilot%20ANC25LA006_Redacted-Rel.pdf - Landing gear examination (item 2, PDF, 6 pages, 370 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17888767&FileExtension=pdf&FileName=Field%20notes%20gear%20leg%20exam-Rel.pdf - Photos (item 3, PDF, 4 pages, 268 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=17888467&FileExtension=pdf&FileName=Investigative%20Photos-Rel.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.