Aircraft Accident/Incident Report

Muskegon, Michigan 49441
Thursday, June 2, 1994 6:10 EST

NTSB Narrative Summary Released at Completion of Accident

THE AERIAL APPLICATION FLIGHT HAD COMPLETED ONE PASS OVER A FIELD AND WAS MAKING A CLIMBING TURN IN PREPARATION FOR A SECOND SWATH RUN. DURING THE CLIMBING TURN THE PILOT REPORTED THE ENGINE QUIT WITH A LOUD BANG WHILE OVER A LAKE NEXT TO THE AREA BEING SPRAYED. THE PILOT SAID HE TURNED TOWARD SHORE AND RAPIDLY DECELERATED. HE SAID HE PITCHED THE AIRPLANE DOWN TO KEEP IT FROM STALLING. THE AIRPLANE DESCENDED IN A STEEP NOSE DOWN ATTITUDE UNTIL REACHING AN ALTITUDE AT WHICH THE PILOT FLARED THE AIRPLANE FOR LANDING. AFTER LANDING IN THE WATER THE AIRPLANE NOSED OVER AND SANK. THE ON-SCENE INVESTIGATION REVEALED THE TURBOPROP ENGINE'S COMBUSTION CHAMBER HAD RUPTURED AND THAT IT DID NOT HAVE A NEGATIVE TORQUE SENSING SYSTEM THAT WOULD ALLOW THE PROPELLER TO FEATHER WHEN THE ENGINE FAILED. THE AIRPLANE WAS NOT EQUIPPED WITH A MANUAL PROPELLER FEATHERING SYSTEM.

NTSB Probable Cause Narrative

THE PROPELLER NOT BEING ABLE TO BE FEATHERED BY THE PILOT, INADEQUATE ALTITUDE FOR A SUCCESSFUL FORCED LANDING, AND THE FAILURE OF THE COMBUSTION SECTION. A FACTOR ASSOCIATED WITH THIS ACCIDENT WAS THE STALL/MUSH ENCOUNTERED BY THE PILOT DUE TO THE WINDMILLING PROPELLER'S DISC DRAG AND RAPID DECELERATION OF THE AIRPLANE.

Event Information

Type of Event Accident
Event Date 6/2/1994
Event Day of the Week Thursday
Time of Event 610
Event Time Zone Eastern Standard Time
Event City MUSKEGON
Event State MICHIGAN
Event Country --
Zipcode of the event site 49441
Event Date Year 1994
Event Date Month 6
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 Weather Observation Facility
Time of the weather observation 620 Eastern Standard Time
Direction of event from weather observation facility (degrees) 320
Weather Observation Facility ID MKG
Elevation of weather observation facility 628
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 30000
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) 12
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 10
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency FAA
NTSB Docket Number (internal use) 1179
NTSB Notification Source --
NTSB Notification Date Jun 2 1994 12:00AM
NTSB Notification Time 621
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:27AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8939H
NTSB Number CHI94DEM01
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name GRUMMAN
Aircraft Model G-164A
Aircraft Series Identifier G-164A
Aircraft Serial Number 1575
Certified Max Gross Weight 6000
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 10 1994 12:00AM
Airframe hours since last inspection 20
Airframe Hours 4500
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MAURICE'S FLYING SERVICE, INC.
Aircraft Owner Street Address 9081 W. CUTLER RD.
Aircraft Owner City LAKEVIEW
Aircraft Owner State MI
Aircraft Owner Country
Aircraft Owner Zipcode 48850
Operator is an individual? --
Operator Name MAURICE'S FLYING SERVICE
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 9081 W. CUTLER ROAD
Operator City LAKEVIEW
Operator State MI
Operator Country
Operator Zip code 48850
Operator Code MCEG
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 13C
Departure City LAKEVILLE
Departure State MI
Departure Country
Departure Time 540
Departure Time Zone EST
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --