# NTSB ANC99LA116: Cessna 206, N3831G, Talkeetna, AK, July 31, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 31, 1999, 11:00 local (19:00 UTC) - Place: Talkeetna, AK - Coordinates: 62.449459, -149.789855 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=62.4495&lon=-149.7899&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report June 23, 2000 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 47162 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC99LA116 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/47162/pdf - Page: https://openairdocs.org/ntsb/ANC99LA116 ## Probable cause A leak/partial failure of the left main gear brake system. Factors in the accident were a short runway/landing area, and the presence of rocks/boulders at the end of the airstrip. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Overrun, landing - roll - landing gear,normal brake system - leak (cause) - brakes(normal) - diminished - airport facilities,runway/landing area condition - short runway/landing area (contributing factor) - On ground/water encounter with terrain/water, landing - roll - terrain condition - rock(s)/boulder(s) (contributing factor) - landing gear,nose gear - sheared ## Analysis The pilot was landing on a remote airstrip that was about 1,000 feet long, 30 feet wide, and about 3,600 feet msl. During the landing roll, the pilot applied the brakes, but the left brake was soft. The pilot said he could not stop the airplane before running off the end of the airstrip. The nose wheel struck several rocks about 50 feet off the end of the strip. The nose wheel then separated from the nose wheel strut. The airplane nosed down and the left wing collided with rocky terrain. After the accident, the pilot said he observed the left main tire covered by brake fluid, but he did not examine the brake cylinder. ## Factual narrative On July 31, 1999, about 1100 Alaska daylight time, a wheel equipped Cessna 206 airplane, N3831G, sustained substantial damage while landing on a remote airstrip, about 12 miles east of Talkeetna, Alaska, about latitude 62 degrees, 10.3 minutes north, and longitude 150 degrees, 03.8 minutes west. The airplane was being operated as a visual flight rules (VFR) local area business flight under Title 14 CFR Part 91 when the accident occurred. The airplane was operated by the pilot. The private certificated pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. On August 16, 1999, a Federal Aviation Administration (FAA) operations inspector, Anchorage Flight Standards District Office (FSDO), reported he followed up on an initial report of minor damage to the airplane. The inspector verified that about four feet of the left wing leading edge was damaged. The wing ribs and the wing spar were also damaged. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on August 17, 1999, the pilot reported he was landing at the Bald Mountain airstrip as part of his mining business. The strip is oriented east/west, and its elevation is approximately 3,600 feet msl. The pilot said he was landing toward the west. The airstrip is about 1,000 feet long, and 30 feet wide. During the landing roll, the pilot said he could not stop the airplane before running off the end of the airstrip, and the nose wheel struck several rocks about 50 feet off the end of the strip. The nose wheel then separated from the nose wheel strut. The airplane nosed down and the left wing collided with rocky terrain. The pilot said he saw what appeared to be hydraulic fluid on and around the left main tire, but he did not examine the brake cylinder. In the narrative portion of the Pilot/Operator report (NTSB form 6120.1/2) submitted by the pilot, the pilot said that when he applied the brakes during the landing roll, the left brake was soft. After the accident, he saw the left main tire was covered by brake fluid. ## Aircraft - Registration: [N3831G](https://openairdocs.org/aircraft/N3831G), registered now, S/N U206-0831 (OpenAirDocs) - Reported make and model: Cessna 206 - Registry model: [Cessna U206B](https://openairdocs.org/model/cessna-u206b) (registry code 2073322) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 2060831 - Airframe hours: 6375 - Engines: Continental IO-520-F 300 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Operator: Leonard W. Kragness - Registered owner: William Merrill - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 22, 1998, 67 hours before - Departed: AK - Airport: Bald Mountain, runway 27, 1,000 × 30 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 58; private; airplane ratings: single-engine sea, single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 11,000 total, 6,000 in this make and model, 11,000 as pilot in command, 100 in the last 90 days, 50 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 225° at 10 knots - Visibility: 100 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 19990731024019A](https://openairdocs.org/incident/19990731024019A), Jul 31, 1999: Cessna U206B, Talkeetna, AK, Substantial damage. (.19) On July 31, 1999, about 1100 Alaska daylight time, a wheel equipped Cessna 206 airplane, N3831G, sustained substantial damage while landing on a remote… ## Other investigations on N3831G (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 ANC01LA143](https://openairdocs.org/ntsb/ANC01LA143), Sep 22, 2001: Cessna U206 (N3831G), Paxson, AK, substantial damage. Probable cause: The pilot's failure to maintain clearance from a sign while taxiing after landing in mixed rain and snow. Factors associated with the accident are reduced visibility conditions due to the snow and… - [NTSB ANC80DAG84](https://openairdocs.org/ntsb/ANC80DAG84), Jul 24, 1980: Cessna U206B (N3831G), Yakataga, 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.