Pilatus PC-12/45 accident near Sleetmute, Alaska, March 8, 2025
On March 8, 2025 at about 2:40 am local time, a 2000 Pilatus PC-12/45, registered N304PT, was substantially damaged in an accident during enroute near Sleetmute, Alaska (Sleetmute airport). It was a business flight under charter and air-taxi rules (Part 135). No one was hurt; 10 people were on board or involved. The weather was instrument conditions (cloud, fog or low visibility).
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The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- March 8, 2025 · about 2:40 am local time
- Place
- Sleetmute, Alaska · Sleetmute · map
- Type
- Accident
- Injuries
- No one was hurt; 10 people were on board or involved.
- Weather
- instrument conditions (cloud, fog or low visibility)
- Aircraft
- Pilatus PC-12/45, built 2000 · all PC-12/45s on the register
- Registration
- N304PT · registry record · serial 304
- Damage
- Substantial damage
- Flight
- Business flight · charter and air-taxi rules (Part 135)
The NTSB's narrative preliminary · quoted from the NTSB record
On March 7, 2025, about 1740 Alaska standard time, a Pilatus PC-12 airplane, N304PT, sustained substantial damage when it was involved in an accident near Sleetmute, Alaska. The pilot and nine passengers were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 135 on demand charter flight. The airplane had departed the Scammon Bay Airport (PACM) at 1635 with nine passengers onboard on an instrument flight rules (IFR) flight plan, en route to the Ted Stevens International Airport (PANC), Anchorage, Alaska. After departure the airplane climbed to 27,000 ft and about 1 hour and 23 minutes into the flight the pilot observed and heard the left side of the windscreen crack. The pilot immediately reduced power and began a gradual descent. About a minute later, as the airplane passed through 24,000 ft, the left side windscreen blew completely out of the airplane. See Figure 1 Figure 1. N304PT depicting missing left side windscreen (Photo provided by operator) The pilot diverted to the Sleetmute Airport (PASL) and landed without incident. An examination of the window frame is pending.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Part(s) separation from AC during enroute defining event
The aircraft
- Seats: 12
- Landing gear: fixed
- Operator: Trygg Holdings, LLC
The flight
- Departed from: PACM Scammon Bay Airport AK at 1:35 am
- Destination: PANC Anchorage AK
- Flight plan: IFR
Weather at the time
- Light: daylight
- Visibility: 10 statute miles
- Sky: overcast at 6,000 ft
- Temperature: 34°F (1°C), dew point 25°F (-4°C)
- Altimeter: 29.56 inHg
- Observation at 4:56 pm from PANI, 68 miles away
Weather report (METAR): PANI 080156Z AUTO VRB05KT 10SM OVC060 01/M04 A2956 RMK AO2 SLP013 T00061039 FZRANO $
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 9 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The NTSB has not released the docket for this case yet. The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), is usually released when the investigation is nearly complete, and the list here is refreshed when it appears. Check at the NTSB.
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number ANC25LA027.