Aircraft Accident/Incident Report

Sitka, Alaska 99835
Monday, September 20, 2004 11:15 AKD

NTSB Narrative Summary Released at Completion of Accident

The commercial certificated pilot, with four passengers, departed for a remote lodge on an on-demand air taxi flight in an amphibious float-equipped airplane. The airplane was the second of two company airplanes to depart for the lodge. The route of flight would have transited around the north end, from the west side to the east side of a large island. The first company airplane completed the flight, but the accident airplane did not arrive at the lodge, and was reported overdue. Throughout the morning, before the accident flight, the pilot received two telephonic weather briefings from the local FAA flight service station, which included an AIRMET for mountain obscuration, and two pilot reports from the first pilot. In addition, the pilot visited the FSS for another weather briefing. The weather conditions along the route of flight had reported visibilities as low as 2 miles, and ceilings as low as 200 feet due to rain and mist, and wind of 35 to 40 knots. The area of the accident flight is characterized by steep mountainous island terrain, numerous ocean channels, and an extensive shoreline, containing small coves and bays. The area frequently has low ceilings and reduced visibility due to rain, fog, and mist. The island is one of several barrier islands between the north Pacific Ocean and mainland Alaska. The western coastal portion of the island is exposed to open ocean. The eastern coastal portion of the island is adjacent to a wide strait, which separates the island from several inner islands. The area of operations for the accident airplane has no low-level radar coverage, intermittent radio communications, and limited weather reporting capability. The company's operations manual states that aircraft may not be released for a flight at any location unless there is agreement about the parameters of the flight with the pilot-in-command, and any of the following: Director of operations; chief pilot; or trained individuals granted the authority by the director of operations. The airplane has been declared missing, and is presumed to have crashed; the occupants are presumed to have received fatal injuries.

NTSB Probable Cause Narrative

Reason for occurrence is undetermined. The airplane is missing.

Event Information

Type of Event Accident
Event Date 9/20/2004
Event Day of the Week Monday
Time of Event 1115
Event Time Zone --
Event City Sitka
Event State ALASKA
Event Country --
Zipcode of the event site 99835
Event Date Year 2004
Event Date Month 9
MidAir Collision Indicator --
On Ground Collision occurred ? --
Event Location Latitude 570250N
Event Location Longitude 1352142W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Witness
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height 200
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 140
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 35
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 40
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 5
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 5
Investigating Agency NTSB
NTSB Docket Number (internal use) 17653
NTSB Notification Source FAA Regional Operations Center
NTSB Notification Date Sep 20 2004 12:00AM
NTSB Notification Time 1353
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 8 2005 12:51PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office FAA-AL-JNU FSDO 05

Aircraft Involved

Aircraft #1

Aircraft Registration Number N712TS
NTSB Number ANC04FAMS2
Missing Aircraft Indicator Y
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed VFR
Flight plan Was Activated? Yes
Damage Destroyed
Aircraft Fire --
Aircraft Explosion --
Aircraft Manufacturer's Full Name de Havilland
Aircraft Model DHC-2
Aircraft Series Identifier --
Aircraft Serial Number 948
Certified Max Gross Weight 5000
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 7
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Sep 1 2004 12:00AM
Airframe hours since last inspection 20
Airframe Hours 16155
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Seair Adventures LLC
Aircraft Owner Street Address P.O. Box 1105
Aircraft Owner City East Sound
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 98245
Operator is an individual? No
Operator Name Harris Aircraft Services Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 400 Airport Rd.
Operator City Sitka
Operator State AK
Operator Country USA
Operator Zip code 99835
Operator Code H0VC
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code PASI
Departure City Sitka
Departure State AK
Departure Country USA
Departure Time 1036
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code BNF
Destination City Baranof
Destination State AK
Destination Country USA
Specific Phase of Flight Unknown
Report sent to ICAO? Yes
Evacuation occurred --
Date of most recent change to record --
User who most recently changed record --
Since inspection or accident Last Inspection
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --