# NTSB ANC83LA166: de Havilland DHC-2, N30ST, Port Alsworth, AK, September 9, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 8, 1983, 18:20 local (Sep 9, 1983, 02:20 UTC)
- Place: Port Alsworth, AK
- Coordinates: 60.199764, -154.280944 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.1998&lon=-154.2809&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 7 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4168
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83LA166
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4168/pdf
- Page: https://openairdocs.org/ntsb/ANC83LA166

## Analysis

THE ACFT COLLIDED WITH A MUD BANK AND CRASHED. THE WEATHER WAS VMC AND A VFR FLT PLAN WAS FILED. THE FLOAT ACFT WAS DAMAGED IN THE ACCIDENT BUT THE SEVEN OCCUPANTS ESCAPED INJURY. THE PILOT STATED THAT SHORTLY AFTER TAKEOFF HE STRUCK ANEMBANKMENT LOST DIRECTIONAL CONTROL AND CRASHED.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, takeoff - initial climb
  - visual lookout - inadequate, pilot in command (cause)
  - proper climb rate - not maintained, pilot in command (cause)

## Aircraft

- Registration: N30ST (not matched to a registry record)
- Reported make and model: de Havilland DHC-2
- Category: Airplane
- Serial number: 426
- Airframe hours: 14698
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Van Valin Lodge
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, May 17, 1983, 60 hours before
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; flight instructor, commercial, airline transport; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,979 total, 429 in this make and model, 4,429 as pilot in command, 99 in the last 90 days, 45 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 10 knots
- Visibility: 70 statute miles
- Lowest ceiling: none
- Temperature: 55 °F, dew point 34 °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 19830908047029A](https://openairdocs.org/incident/19830908047029A), Sep 8, 1983: Dhav DHC2*, Lower Talarik C, AK, Substantial damage. Shortly after takeoff aircraft hit mudbank. Pilot lost directional control and aircraft crashed.

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.

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