Aircraft Accident/Incident Report

St. Ignace, Michigan 49781
Tuesady, August 2, 1994 13:40 EDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT AND BOAT OPERATOR HAD PREARRANGED TO MEET IN A COVE OFF A DESERTED ISLAND. THE PILOT STATED THAT THE WINDS WERE OUT OF THE ENE AT 10-15 KTS, AND HE LANDED ON AN EASTERLY HEADING. HE STATED '...WE TOUCHED DOWN AND WERE GOING TOWARDS SHORE WHEN I WENT INTO REVERSE AND OFF THE STEP. THE AIRPLANE TURNED RIGHT FURTHER TOWARDS SHORE AND AWAY FROM THE WIND....' THIS WOULD OCCUR IF THE LEFT PROPELLER DID NOT GO INTO REVERSE. THE PILOT THEN TURNED AROUND AND TAXIED DOWNWIND ON THE WATER TOWARDS THE MOORED BOAT. AS THE AIRPLANE NEARED THE BOAT, THE PILOT APPLIED REVERSE THRUST, BUT THE LEFT PROPELLER DID NOT GO INTO REVERSE PITCH. WHEN IT BECAME APPARENT THAT THE PILOT WAS HAVING DIFFICULTY SLOWING DOWN, THE BOAT OPERATOR, HIS WIFE, AND 4-YEAR-OLD SON JUMPED INTO THE WATER. THE 6-YEAR-OLD SON DID NOT GET OFF THE BOAT AND WAS KILLED WHEN THE AIRPLANE STRUCK THE BOAT. INVESTIGATION REVEALED THE LEFT PROPELLER LOW PITCH STOP ASSEMBLY WAS NOT OPERATING NORMALLY DUE TO A DISPLACED STOP RING AND STOP WEDGE. THE PROPELLER ASSEMBLY HAD OPERATED ABOUT 70 HOURS SINCE IT WAS REBUILT.

NTSB Probable Cause Narrative

THE PILOT'S FAILURE TO FOLLOW GOOD SEAPLANE OPERATING PRACTICES BY TAXIING WITH POWER AT FORWARD THRUST, WITH A TAILWIND, AT A SPEED THAT NECESSITATED USING REVERSE THRUST TO ARREST THE EXCESSIVE SPEED, AND THE PILOT'S MISJUDGMENT OF HIS DISTANCE FROM THE BOAT. THE FAILURE OF THE LEFT PROPELLER REVERSING SYSTEM WAS A FACTOR IN THE ACCIDENT.

Event Information

Type of Event Accident
Event Date 8/2/1994
Event Day of the Week Tuesday
Time of Event 1340
Event Time Zone Eastern Daylight Time
Event City ST. IGNACE
Event State MICHIGAN
Event Country --
Zipcode of the event site 49781
Event Date Year 1994
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 10000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 60
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 15
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 1
On Ground, Minor Injuries 3
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor 3
Injury Total None 9
Injury Total Serious --
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 1183
NTSB Notification Source --
NTSB Notification Date Aug 2 1994 12:00AM
NTSB Notification Time 1415
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:58AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7025N
NTSB Number CHI94FA262
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name GRUMMAN
Aircraft Model HU-16
Aircraft Series Identifier HU-16
Aircraft Serial Number 409
Certified Max Gross Weight 33500
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 12
Number of Engines 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 24 1994 12:00AM
Airframe hours since last inspection 20
Airframe Hours 3936
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name DA SILVA, URBANO M.
Aircraft Owner Street Address 5403 ROGERS HIGHWAY
Aircraft Owner City TECUMSEH
Aircraft Owner State MI
Aircraft Owner Country
Aircraft Owner Zipcode 49286
Operator is an individual? --
Operator Name DASILVA, URBANO M.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 5403 ROGERS HIGHWAY
Operator City TECUMSEH
Operator State MI
Operator Country
Operator Zip code 49286
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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 Yes
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1245
Departure Time Zone EDT
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 Taxi
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --