Aircraft Accident/Incident Report

Elmendorf, Alaska 99502
Sunday, September 8, 1996 14:48 AKD

NTSB Narrative Summary Released at Completion of Accident

Initially, the instructor pilot (CFI) was seated in the front of the airplane, and the commercial certificated dual student pilot was seated in the rear. The purpose of flight was to instruct the student in glider tow operations. They performed two glider tow operations and decided to change seats. The student exited the rear of the airplane and stood outside, while the CFI climbed over the front seat into the rear. This was accomplished while the engine was running. A third glider tow operation was accomplished, then while climbing during the fourth glider tow operation, the engine lost power. The pilots selected a muskeg field for a forced landing. At about tree height, the engine surged to full power and then stopped again. The pilots missed landing the airplane in the muskeg field. They landed the wheel airplane in a small lake, and it sank. Examination of the cockpit before the airplane was raised showed the fuel selector positioned between the left and right fuel tank positions. Postaccident inspection of the airplane and its systems disclosed no evidence of a preexisting mechanical anomaly. The engine was supplied with fresh fuel and started. It ran normally. The fuel selector was moved to the position where it was discovered, while submerged. The engine then ran about two minutes and stopped.

NTSB Probable Cause Narrative

loss of engine power due to fuel starvation, which resulted from improper positioning of the fuel tank selector; inadequate supervision by the flight instructor (CFI); and the flight crew's improper emergency procedure.

Event Information

Type of Event Accident
Event Date 9/8/1996
Event Day of the Week Sunday
Time of Event 1448
Event Time Zone --
Event City ELMENDORF
Event State ALASKA
Event Country --
Zipcode of the event site 99502
Event Date Year 1996
Event Date Month 9
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 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) 90
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1879
NTSB Notification Source --
NTSB Notification Date Sep 8 1996 12:00AM
NTSB Notification Time 1604
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 10:21AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4372A
NTSB Number ANC96TA148
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-18
Aircraft Series Identifier PA-18
Aircraft Serial Number 18-4774
Certified Max Gross Weight 1750
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name CIVIL AIR PATROL
Aircraft Owner Street Address P.O. BOX 92
Aircraft Owner City ELMENDORF AFB
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99506
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code EDF
Departure City
Departure State
Departure Country
Departure Time 1448
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
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 --