# NTSB ANC96LA082: Cessna 207, N91052, Akiachak, AK, June 4, 1996 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: June 4, 1996, 15:00 local (23:00 UTC) - Place: Akiachak, AK - Coordinates: 60.899421, -161.420791 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=60.8994&lon=-161.4208&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 2 minor - Status: Completed, report February 18, 1997 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 2846 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC96LA082 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/2846/pdf - Page: https://openairdocs.org/ntsb/ANC96LA082 ## Probable cause The pilot's inadequate compensation for the variable crosswind conditions. Factors associated with the accident were the variable crosswinds and the short runway. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Overrun, takeoff - aborted - airport facilities,runway/landing area condition - short runway/landing area (contributing factor) - weather condition - crosswind (contributing factor) - weather condition - variable wind (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - On ground/water encounter with terrain/water, takeoff - aborted - airport facilities,runway overrun area - ditch - Nose gear collapsed, takeoff - aborted - landing gear,nose gear - overload - Nose over, takeoff - aborted ## Analysis The takeoff was from a 1,600-foot long gravel runway in variable crosswind conditions. During the takeoff roll, about one-half way down the runway, the pilot noted a 10 knot decrease in airspeed. He elected to abort the takeoff, but was unable to stop the airplane prior to overrunning the end of the runway. The airplane's nose gear sheared off, and the airplane nosed over. ## Factual narrative On June 4, 1996, about 1500 Alaska daylight time, a wheel equipped Cessna 207 airplane, N91052, sustained substantial damage during an aborted takeoff from the Akiachak Airport, Akiachak, Alaska. The commercial certificated pilot, and the sole passenger aboard, received minor injuries. The on-demand, 14 CFR Part 135 flight operated in visual meteorological conditions. A company VFR flight plan was in effect. According to the company's Director of Operations (D.O.), the pilot was attempting to takeoff from runway 11 in crosswind conditions. Runway 11 is gravel surfaced, and 1600 feet long, by 50 feet wide. The D.O said the pilot was dissatisfied with the airplane's acceleration, and elected to abort the takeoff. The pilot was unable to stop the airplane prior to the end of the runway, and the airplane continued off the end of the runway, entered a small ditch, and nosed over. The pilot's written statement submitted to the NTSB indicates that the pilot was attempting to takeoff in variable crosswind conditions. The pilot stated that the observed wind was from approximately 340 to 020 degrees at 10 knots. He wrote that during the takeoff roll, about one-half way down the runway, he noted a 10 knot decrease in airspeed. He elected to immediately abort the takeoff, but was unable to stop the airplane prior to it going off the end of the runway and sliding into a shallow depression. The nosegear collapsed, and the airplane nosed over. The pilot believes the abrupt change in indicated airspeed was due to windshear. The pilot reported there was no preaccident mechanical malfunction with the airplane. ## Aircraft - Registration: N91052 (not matched to a registry record) - Reported make and model: Cessna 207 - Category: Airplane - Serial number: 2070039 - Airframe hours: 11186 - Engines: Continental IO-520-F 300 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Operator: Larry'S Flying Service - Registered owner: Kenneth E. Martin - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 29, 1996, 21 hours before - Departed: BET, BETHEL, AK - Destination: BET, AK - Flight plan: Company VFR - Airport: Z13, Akiachak, runway 11, 1,600 × 50 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 28; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,277 total, 623 in this make and model, 2,000 as pilot in command, 210 in the last 90 days, 92 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 10 knots - Visibility: 10 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 19960604012609A](https://openairdocs.org/incident/19960604012609A), Jun 4, 1996: Cessna 207, Akiachak, AK, Substantial damage. Tried depart short gravel strip in crosswind. Noted speed loss. Aborted overran strip. Nosed over. Windshear noted. 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.