Aircraft Accident/Incident Report

Lake Havasu Cty, Arizona 86403
Saturday, April 13, 1996 22:10 MST

NTSB Narrative Summary Released at Completion of Accident

The pilot owned and operated the seaplane and had flown it for 803 hours. During the dark nighttime cruise flight, the engine began surging and then gradually lost power. The pilot planned to make a forced landing at the shoreline of the Colorado River; however, during landing the airplane slid on the grass bank and impacted a 3-foot-high tree trunk. The airplane was subsequently examined, and the following discrepancies were found: (1) Sediment was observed in the fuel filter and carburetor; (2) The number 3 cylinder intake valve was found open and stretched in excess of 0.200 inches; (3) No compression was obtained from the number 3 cylinder; (4) The engine oil was black in color; (5) The magneto's drive end seal bearing was found leaking oil; (6) The left set of points were oil fouled, and the right set of points had oil on the contacts and were coked up; and (7) The left distributor gear was missing a gear tooth.

NTSB Probable Cause Narrative

the pilot-owner's inadequate engine maintenance which resulted in a progressive ignition failure. Factors which contributed to the accident were the dark nighttime light condition and the presence of hidden obstructions in the forced landing area.

Event Information

Type of Event Accident
Event Date 4/13/1996
Event Day of the Week Saturday
Time of Event 2210
Event Time Zone Mountain Standard Time
Event City LAKE HAVASU CTY
Event State ARIZONA
Event Country --
Zipcode of the event site 86403
Event Date Year 1996
Event Date Month 4
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 Not pertinent
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 Night/Dark
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Unknown
Wind Speed (knots) 2
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 287
NTSB Notification Source --
NTSB Notification Date Apr 13 1996 12:00AM
NTSB Notification Time 2232
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 9:57AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9177E
NTSB Number LAX96LA167
Missing Aircraft Indicator N
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 Maule
Aircraft Model M-5-235C
Aircraft Series Identifier M-5-235C
Aircraft Serial Number 7125C
Certified Max Gross Weight 2750
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 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 23 1995 12:00AM
Airframe hours since last inspection 165
Airframe Hours 981
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name LOUIS D. BELL
Aircraft Owner Street Address 27402 N. 149TH AVENUE, R.R. 2
Aircraft Owner City SUN CITY
Aircraft Owner State AZ
Aircraft Owner Country
Aircraft Owner Zipcode 85375
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
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? 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 No
Departure Point Same as Event No
Departure Airport Code IFP
Departure City BULLHEAD
Departure State AZ
Departure Country
Departure Time 2150
Departure Time Zone MST
Destination Same as Local Flt crash at destination city
Destination Airport Code HII
Destination City
Destination State
Destination Country
Specific Phase of Flight Cruise
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 --