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NTSB Report
November 12, 1992 · Piper PA-18-150 · N9124D
Beaver, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
November 12, 1992
Injury Outcomes
2 injuries (2 fatalities)
Location
Beaver, AK
Aircraft
Piper PA-18-150
Tail Number
N9124D
Operator
Joe a Firmin
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
ANC93GA020
THE PURPOSE OF FLIGHT WAS TO COUNT MOOSE. THE PILOT HAD REPORTED TO ANOTHER SURVEY PILOT, WHO WAS WORKING IN AN AREA NEARBY AND JUST OVER THE RIDGE, THAT HIS ASSIGNED AREA HAD SOME FOG IN THE UPPER ELEVATIONS, BUT THAT IT WAS WORKABLE. THE PILOT SUBSEQUENTLY ADVISED THAT THE STANDARD SEARCH HAD BEEN COMPLETED, AND THAT HE WAS COMMENCING THE INTENSIVE SEARCH PATTERN. THERE WAS NO FURTHER CONTACT WITH THE FLIGHT. DURING THE INTENSIVE SEARCH, WHICH TAKES 20-30 MIN TO COMPLETE, A SERIES OF SLIGHTLY OVERLAPPING CIRCLES OR OVALS ARE FLOWN AT 200-300 FT AGL, AT 60 TO 70 MPH, WITH ONE NOTCH (15 DEG) OF FLAPS. THE AIRPLANE IMPACTED SNOW COVERED TUNDRA NOSE FIRST AT AN ANGLE OF APPROX 40 DEG. AT THE TIME OF THE ACCIDENT, THE AIRPLANE WAS APPROX 300 LBS OVER MAX CERTIFICATED GROSS WEIGHT.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN AIRSPEED WHICH RESULTED IN AN INADVERTENT STALL AT AN ALTITUDE INADEQUATE TO AFFECT A RECOVERY. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE OVERWEIGHT AIRPLANE, AND THE SNOW COVERED MOUNTAINOUS TERRAIN.
Full Narrative
THE PURPOSE OF FLIGHT WAS TO COUNT MOOSE. THE PILOT HAD REPORTED TO ANOTHER SURVEY PILOT, WHO WAS WORKING IN AN AREA NEARBY AND JUST OVER THE RIDGE, THAT HIS ASSIGNED AREA HAD SOME FOG IN THE UPPER ELEVATIONS, BUT THAT IT WAS WORKABLE. THE PILOT SUBSEQUENTLY ADVISED THAT THE STANDARD SEARCH HAD BEEN COMPLETED, AND THAT HE WAS COMMENCING THE INTENSIVE SEARCH PATTERN. THERE WAS NO FURTHER CONTACT WITH THE FLIGHT. DURING THE INTENSIVE SEARCH, WHICH TAKES 20-30 MIN TO COMPLETE, A SERIES OF SLIGHTLY OVERLAPPING CIRCLES OR OVALS ARE FLOWN AT 200-300 FT AGL, AT 60 TO 70 MPH, WITH ONE NOTCH (15 DEG) OF FLAPS. THE AIRPLANE IMPACTED SNOW COVERED TUNDRA NOSE FIRST AT AN ANGLE OF APPROX 40 DEG. AT THE TIME OF THE ACCIDENT, THE AIRPLANE WAS APPROX 300 LBS OVER MAX CERTIFICATED GROSS WEIGHT.
Flight
Event TypeAccident
Event Time07:00 AKST
Nearest Airport0nm N
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18-150
Tail NumberN9124D
Aircraft CategoryAir
DamageDestroyed
OperatorJoe a Firmin
Engines1
Engine TypeReciprocating
Engine DetailsAvco Lycoming · O-320-A3B · Reciprocating · 150
Seats2
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 41 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility15 sm
CeilingOvercast 2700 ft
Temperature / Dew Point10 C / 0 C
Altimeter30.00 inHg
Weather SourceWIT