# NTSB ANC21LA020: Robinson Helicopter R66, N1767, Kodiak, AK, March 3, 2021 - Type: NTSB accident investigation - Classification: Accident · Fatal · Class 3 · Limited · Final report - Date: March 2, 2021, 15:39 local (Mar 3, 2021, 00:39 UTC) - Place: Kodiak, AK - Coordinates: 58.872527, -152.13761 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=58.8725&lon=-152.1376&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute: Unknown or undetermined](https://openairdocs.org/ntsb-events/000) - Highest injury: Fatal - Injuries: 1 fatal - Status: Completed - Report: Approved by Office Director - Investigation class: Class 3 - NTSB office: Alaska Regional Office - Parties: Robinson Helicopter Company, FAA - NTSB case key (mKey): 102702 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC21LA020 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102702/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=102702 - Page: https://openairdocs.org/ntsb/ANC21LA020 ## Probable cause An impact with ocean waters for reasons that could not be determined based on the available information. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Robinson Helicopter R66, 3 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=7640130), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute: Unknown or undetermined](https://openairdocs.org/ntsb-events/000) (defining event); cases with it: [Robinson Helicopter R66, 5 cases](https://openairdocs.org/ntsb-events/000/sequence.md?model=7640130), [All aircraft, 1,703 cases](https://openairdocs.org/ntsb-events/000/sequence.md) ## Analysis The pilot, the sole occupant, was making a personal cross-country flight in the helicopter. According to flight tracking data, the helicopter departed and proceeded on course for about 1 hour 33 minutes. The flight track ended when the helicopter was about 70 nautical miles (nm) from its destination, over open ocean water, at an altitude of 394 ft mean sea level, and at a groundspeed of 132 knots. When the helicopter failed to arrive at its destination, family and friends contacted the Federal Aviation Administration and an extensive search was launched. During the search and rescue (SAR) operation, an inflated yellow pop-out float believed to be from the accident helicopter was located on the ocean surface. The search continued with additional SAR assets; however, minimal debris believed to be from the helicopter was observed in the water, and the search was suspended. Days after the accident, debris was discovered on the shore of an island about 42 nm north from the accident site and identified to be from the helicopter. Most of the helicopter was not located, and it is presumed to have sunk in the ocean waters. The pilot was not located, and an autopsy and toxicology test could not be performed. Weather satellite imagery indicated that as the helicopter approached the vicinity of the accident site, it was likely operating in visual meteorological conditions beneath scattered-to-broken cloud cover. A weather station near the accident site reported wind gusting to 27 knots, which could have led to low-level wind shear conditions. Investigators were unable to determine the cause of the accident with the available information ## Factual narrative On March 2, 2021, about 1539 Alaska standard time, a Robinson Helicopter Company R66 helicopter, N1767, was destroyed when it was involved in an accident about 70 nautical miles north of Kodiak, Alaska. The pilot, the sole occupant, was not located. The helicopter was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. According to the pilot’s wife, her husband owned Kodiak Helicopters, LLC, which owned and operated the helicopter. She stated that he had requested the use of the helicopter from a company employee to make a trip to see family located in Kodiak. She added that they had just returned from an out-of-state trip, and after arriving in Anchorage, Alaska, her husband went directly to Merrill Field Airport (MRI), Anchorage, where the helicopter was located. A pilot for Kodiak Helicopters reported that he was contacted earlier in the day by the accident pilot, who told him that he needed the helicopter for the next few days. According to the Kodiak Helicopters pilot, he flew the helicopter from Palmer, Alaska, to MRI and then filled the helicopter with fuel. He added that he had brief contact with the accident pilot while unloading his personal gear from the helicopter and that the accident pilot seemed distracted and was “not himself.” Additionally, he said that the accident pilot mentioned that a local newspaper was set to publish a story about him within the next few hours, and he wanted to be with his family in Kodiak when the story broke. According to the Kodiak Helicopters pilot, the helicopter departed from MRI at 1406 with a planned destination of Kodiak Airport (ADQ). The Kodiak Helicopters pilot said he viewed the helicopter’s en route progress via Spidertracks (a real-time tracking system), and at 1539, the helicopter’s Spidertracks data stopped in an area south of the Barren Islands over open ocean waters. About 1630, the Kodiak Helicopters pilot and the pilot’s wife began making inquiries to see if the helicopter had arrived in Kodiak. They were unable to locate the helicopter and contacted the Federal Aviation Administration (FAA) to initiate an organized search for the missing helicopter. An FAA Alert Notice (ALNOT) was issued, and an extensive search was launched. During the search and rescue (SAR) operation, the United States Coast Guard (USCG) dispatched a rescue helicopter that located an inflated yellow pop-out float believed to be from the accident helicopter (see figure 1). The USCG stated that an emergency locator transmitter beacon was not received from the accident helicopter. No distress calls from the helicopter were reported. The search continued with additional SAR assets; however, minimal debris believed to be from the helicopter was observed in the water, and the search was suspended on March 3, 2021, about 1130. Figure 1. Inflated yellow pop-out float believed to be from the helicopter- (Photo courtesy of the USCG) A review of the archived Spidertracks data revealed that afterdeparture, the helicopter flew south down the Kenai Peninsula and then out over the ocean on course for Kodiak. At 1539, the last data point was recorded as the helicopter passed between Ushagat Island and West Amatuli Islands (two of the Barren Islands), at an altitude of 394 ft mean sea level (msl), on a heading of 186°, and at a groundspeed of 132 knots (see figure 2). ( Figure 2. Spidertracks Data from Accident Flight A review of FAA data indicated that there were no preflight weather briefings or air traffic services provided to the pilot. Days after the accident, pilots of an air charter company based in Kodiak discovered debris on a beach near Afognak Island, Alaska, which is located about 42 nm north of Kodiak. The debris was recovered and found to be part of the helicopter’s float, skid tube, and fuselage structure. No other wreckage was located. The pilot’s logbook was not available for review, and recent information on the flight history of the pilot could not be determined. A review of the helicopter’s maintenance logbooks revealed no outstanding discrepancies or irregularities. Review of weather data indicated that an area of low cloud cover was located along most of the accident flight path on the western portion of the Kenai Peninsula. The observations from the Seldovia Airport (PASO), Seldovia, Alaska, about 37 nautical miles north-northeast of the accident site, surrounding the accident time indicated marginal visual flight rules (MVFR) to instrument flight rules (IFR) conditions prevailed. Weather satellite imagery indicated that as the helicopter approached the Barren Islands, there was scattered to broken cloud cover. A marine station located on East Amatuli Island, about 6 miles east-northeast of the accident site reported a northwest wind gusting to 27 knots at the time of the accident. At the time the helicopter passed near Nanwalek, Alaska, about 30 nautical miles north from the accident site, between 1523 to 1526, the south-facing FAA Aviation Weather Camera indicated cloud bases near or below 850 ft msl, while the southwest-facing FAA Aviation Weather Camera indicated cloud bases near but above 650 ft msl. Visibility below the cloud base was above 3 statute miles based on the south-facing camera imagery. ## Aircraft - Registration: [N1767](https://openairdocs.org/deregistered/N1767-2022-05-07), registration cancelled 2022-05-07, S/N 0660, built 2015 (OpenAirDocs) - Reported make and model: ROBINSON HELICOPTER CO R66 - Registry model: [Robinson Helicopter R66](https://openairdocs.org/model/robinson-helicopter-r66) (registry code 7640130) (OpenAirDocs) - Registry engine: [Rolls-Royce 250-C300/A1](https://openairdocs.org/engine/rolls-royce-250-c300-a1) (registry code 54232, turbo-shaft) (OpenAirDocs) - Category: Helicopter - Serial number: 0660 - Year built: 2015 - Airframe hours: 190.6 - Engines: ROLLS-ROYCE 250-C300/A1 300 horsepower turbo shaft - Damage: Destroyed - Fire: Unknown - Flight: Personal, Part 91 - Registered owner: Kodiak Helicopters LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 7, 2020 - Departed: MRI, Anchorage, AK - Destination: ADQ, Kodiak, AK ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 52; injuries: unknown; commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane, helicopter; medical: class 1, with waivers/limitations; flight hours: 2,355 total ## Weather - Conditions: Day - Wind: variable at 4 knots - Visibility: 10 statute miles - Lowest ceiling: 1,000 ft overcast - Temperature: 27 °F, dew point 23 °F - Altimeter: 29.16 inHg - Turbulence: Unknown - Observed at: PASO, 32 nm away - METAR: PASO 030023Z AUTO VRB04KT 10SM OVC010 M03/M05 A2916 RMK AO2 T10331050 TSNO ## 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 20210302002669A](https://openairdocs.org/incident/20210302002669A), Mar 2, 2021: Robinson Helicopter Co R66, Kodiak, AK, Destroyed, 1 fatal. On March 2, 2021 at 1409 AKST, N1767, a Robinson R66, departed merrill field (mri) in anchorage, AK with an intended destination of Kodiak, AK (adq). At… ## Docket (11 files) The files NTSB released with the investigation on August 24, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=102702. 30.2 MB in all. - Weather factual report (item 1, PDF, 18 pages, 880 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12338577&FileExtension=pdf&FileName=ANC21LA020_weatherfactualSuffernfinal-Rel.pdf - Weather attachment 1 (item 2, ZIP, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12338138&FileExtension=zip&FileName=attachment1_AAWUgraphics-Rel.zip - Weather attachment 2 (item 3, ZIP, 2.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12338587&FileExtension=zip&FileName=attachment2_Nanwalek3-3-2021-Rel.zip - Weather attachment 3 (item 4, ZIP, 4.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12339055&FileExtension=zip&FileName=attachment3_Ouzinkie3-3-2021-Rel.zip - Chris timpano roc (item 5, PDF, 2 pages, 155 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12909789&FileExtension=pdf&FileName=ANC21LA020%20Record%20of%20Conversation%20Document-Rel.pdf - Transcript of interview - c timpano (item 6, PDF, 34 pages, 108 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12428522&FileExtension=pdf&FileName=ANC21LA020_Timpano-Rel.pdf - Summary of interview - a belisle (item 7, PDF, 4 pages, 101 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12434494&FileExtension=pdf&FileName=Next%20of%20Kin%20Interview%20ANC21LA020-Rel.pdf - Summary of pilot's recent activities (item 8, PDF, 1 page, 84 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12434679&FileExtension=pdf&FileName=Recent%20Activities-Rel.pdf - Maintenance records (item 9, PDF, 13 pages, 17.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12741327&FileExtension=pdf&FileName=N1767%20Maintenance%20Records_Redacted-Rel.pdf - Statement of party representatives to NTSB investigation (item 10, PDF, 1 page, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12814270&FileExtension=pdf&FileName=Party%20041_Redacted-Rel.pdf - Accident pictures (item 11, PDF, 4 pages, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12813959&FileExtension=pdf&FileName=Accident%20Pictures_Redacted-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.