Lake Hood Seaplane Base Airport
Aircraft Accident/Incident Report

Anchorage, Alaska 99502
Friday, September 7, 2007 16:40 AKD

NTSB Narrative Summary Released at Completion of Accident

The airline transport pilot was departing a lake in a float-equipped airplane. During the takeoff initial climb, the engine rpm began decreasing, and the manifold pressure was increasing. The airplane attained about 400 feet agl, but did not continue to climb. Emergency engine failure procedures failed to restore power, and the pilot turned sharply to avoid a building. He leveled the airplane just before impact along the shore of the lake. A postaccident examination of the airplane and engine found no mechanical malfunction. The engine was placed on an engine test stand where it attained full rated rpm.

NTSB Probable Cause Narrative

A loss of engine power for an undetermined reason.

Event Information

Type of Event Accident
Event Date 9/7/2007
Event Day of the Week Friday
Time of Event 1640
Event Time Zone --
Event City Anchorage
Event State ALASKA
Event Country --
Zipcode of the event site 99502
Event Date Year 2007
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 611048N
Event Location Longitude 1495819W
Event Location Airport Lake Hood Seaplane Base
Event Location Nearest Airport ID PALH
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 71
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1640 Atlantic Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID PALH
Elevation of weather observation facility 71
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation ADT
Lighting Conditions Day
Lowest Ceiling Height 6500
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) 10
Air Temperature at event time (in degrees celsius) 17
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) 130
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 14
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.06
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 23565
NTSB Notification Source FAA Regional Operations Center
NTSB Notification Date Sep 7 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record May 28 2008 12:03PM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office FAA-AL-ANC FSDO 03

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1758R
NTSB Number ANC07LA096
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 185
Aircraft Series Identifier --
Aircraft Serial Number 18502478
Certified Max Gross Weight 3320
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 1 2007 12:00AM
Airframe hours since last inspection 10
Airframe Hours 1791
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Robert T. Perkins
Aircraft Owner Street Address --
Aircraft Owner City Anchorage
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99516
Operator is an individual? No
Operator Name Robert T. Perkins
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code PALH
Departure City Anchorage
Departure State AK
Departure Country USA
Departure Time 1640
Departure Time Zone ADT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Emergency landing after takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 1 2008 1:37AM
User who most recently changed record STAM
Since inspection or accident Last Inspection
Event Location Runway Number and Location --
Runway Length 1370
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --