# NTSB ANC98LA049: Cessna U206G, N756HG, Iliamna, AK, May 17, 1998 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 17, 1998, 13:15 local (21:15 UTC) - Place: Iliamna, AK - Coordinates: 59.850276, -154.560668 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=59.8503&lon=-154.5607&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report February 15, 2001 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 3138 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC98LA049 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/3138/pdf - Page: https://openairdocs.org/ntsb/ANC98LA049 ## Probable cause The pilot's inadequate compensation for quartering tailwind conditions. A factor in the accident is the presence of a quartering tailwind. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, taxi - from landing - weather condition - tailwind (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - Nose over, taxi - from landing ## Analysis The solo commercial pilot was returning to Iliamna, Alaska, after dropping off his passengers. A successful landing was made on runway 07 at the Iliamna Airport. After the landing roll out, the pilot made a left turn onto the intersecting runway 35 to taxi to the company parking area. The pilot stated that after he made the turn, it was difficult to maintain directional control due to high winds and a quartering tailwind condition. A gust of wind lifted the tail of the airplane, and it nosed over, resulting in substantial damage to the wings, fuselage, doors, and rudder assembly. The pilot noted in his written statement that wind conditions at the time of the accident were 080 at 25 knots, with peak gusts to 34 knots. ## Factual narrative On May 17, 1998, about 1315 Alaska daylight time, a wheel equipped Cessna U206G, N756HG, sustained substantial damage after landing at Iliamna Airport, Iliamna, Alaska. The airplane was being operated as a visual flight rules (VFR) repositioning flight under Title 14 CFR Part 91 when the accident occurred. The airplane is registered to, and operated by, Iliamna Air Taxi, Inc., Iliamna, Alaska. The airline transport certificated pilot, the sole occupant, was not injured. A VFR flight plan was filed. The flight last departed Nondalton, Alaska, at 1245, and the destination was Iliamna. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on May 18, the pilot related that he was returning from Nondalton. A successful landing was made on runway 07 at Iliamna. After landing roll out, the pilot made a left turn onto intersecting runway 35 to taxi to the company parking area. The pilot stated that after he made the turn, it was difficult to maintain directional control due to high winds and a quartering tailwind condition. After taxing about 75 feet, the right wing and tail lifted. The airplane then nosed over, causing substantial damage to the wings, fuselage, doors, and rudder assembly. The pilot stated that the wind conditions at the time of the accident were 080 degrees at 25 knots, with peak gusts to 35 knots. ## Aircraft - Registration: [N756HG](https://openairdocs.org/deregistered/N756HG-2013-04-16), registration cancelled 2013-04-16, S/N U20604099, built 1978 (OpenAirDocs) - Reported make and model: Cessna U206G - Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: U20604099 - Airframe hours: 5366 - Engines: Continental IO-520-F56B 300 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Registered owner: Iliamna Air Taxi - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, April 9, 1998, 36 hours before - Departed: PJA, PORT ALSWORTH, AK - Flight plan: VFR - Airport: ILI, Iliamna, runway 35, 5,080 × 100 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 27; airline transport; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 1,527 total, 163 in this make and model, 1,445 as pilot in command, 136 in the last 90 days, 17 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 80° at 25 knots, gusting 35 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 43 °F, dew point 30 °F - Altimeter: 29.00 inHg ## 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 19980517009469A](https://openairdocs.org/incident/19980517009469A), May 17, 1998: Cessna U206G, Iliamna, AK, Substantial damage. Nosed over in high surface wind turning onto taxiway after landing. Wind got under tail. (.4)the solo commercial pilot was returning to Iliamna, Alaska, after… ## Other investigations on N756HG (1) 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 ANC00FA024](https://openairdocs.org/ntsb/ANC00FA024), Feb 5, 2000: Cessna U206G (N756HG), Iliamna, AK, destroyed, 6 fatal. Probable cause: The pilot's attempted flight into adverse weather, and his failure to maintain altitude/clearance above the snow-covered tundra. Factors associated with the accident were snow, rain, and whiteout… 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.