# NTSB ANC07CA034: Piper PA-12, N3613M, Delta Junction, AK, April 29, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: April 29, 2007, 13:00 local (21:00 UTC) - Place: Delta Junction, AK - Coordinates: 63.735, -146.59027 - Nearby events: https://openairdocs.org/map.md?lat=63.7350&lon=-146.5903&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 25, 2007 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 65657 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC07CA034 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65657/pdf - Page: https://openairdocs.org/ntsb/ANC07CA034 ## Probable cause The damaged and deflated over-sized tire on the main landing gear, which precipitated a loss of directional control during landing. ## Analysis The pilot was conducting off airport landings in a tundra-tire equipped airplane under Title 14, CFR Part 91. During a telephone conversation with the National Transportation Safety Board investigator-in-charge on April 30, the pilot reported he had flown the airplane for about an hour since his previous off airport landing. He said when he touched down, unknown to him, his right main landing gear tire was flat, and due to its large size, he was unable to maintain directional control on the ground. The airplane exited the intended landing area into rough and uneven terrain. He reported airplane nosed over, and the left wing lift-strut was bent. The pilot said when he examined the deflated tire he found a stick imbedded in the tire, which he believes was from his previous landing. ## Factual narrative The pilot was conducting off airport landings in a tundra-tire equipped airplane under Title 14, CFR Part 91. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on April 30, the pilot reported he had flown the airplane for about an hour since his previous off airport landing. He said when he touched down, unknown to him, his right main landing gear tire was flat, and due to its large size he was unable to maintain directional control on the ground. The airplane exited the intended landing area into rough and uneven terrain. He reported airplane nosed over, and the left wing lift-strut was bent. The pilot said when he examined the deflated tire he found a stick imbedded in the tire from the previous landing. ## 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 - landing gear,tire - deflated (cause) - directional control - not possible, pilot in command - On ground/water encounter with terrain/water, landing - roll - terrain condition - rough/uneven - Nose over, landing - roll ## Aircraft - Registration: [N3613M](https://openairdocs.org/aircraft/N3613M), registered now, S/N 12-2459, built 1947 (OpenAirDocs) - Reported make and model: Piper PA-12 - Registry model: [Piper PA-12](https://openairdocs.org/model/piper-pa-12) (registry code 7101202) (OpenAirDocs) - Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: 12-2459 - Engines: Lycoming O-235 reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Gary Hall - Registered owner: Gary Hall - Airworthiness certificate: Standard, Normal - Departed: Off airport sit - Destination: Delta Junction, AK ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; injuries: none; commercial; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2; flight hours: 100 total, 50 in this make and model ## Weather - Conditions: Visual (VMC), Day ## 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 20070429006139A](https://openairdocs.org/incident/20070429006139A), Apr 29, 2007: Piper PA12, Delta Junction, AK, Substantial damage. (-23) [privacy data omitted] the pilot was doing off airport landings at remote locations. The pilot indicated he had taken off from a remote strip and flew… ## Other investigations on N3613M (3) 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 ANC11CA025](https://openairdocs.org/ntsb/ANC11CA025), Apr 10, 2011: Piper PA-12 (N3613M), Delta Junction, AK, substantial damage. Probable cause: The pilot's misjudged altitude while landing in bright sunlight on an airstrip surrounded by snow, resulting in an undershoot and a nose over. - [NTSB ANC75DAG71](https://openairdocs.org/ntsb/ANC75DAG71), Mar 6, 1975: Piper PA-12 (N3613M), Iliamna, AK, substantial damage - [NTSB ANC68D0044](https://openairdocs.org/ntsb/ANC68D0044), Jun 17, 1967: Piper PA-12 (N3613M), Skwentna, AK, substantial damage 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.