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NTSB Report
January 21, 1982 · Cessna P210N · N4947K
Boise, ID
Overview
Report Status
Preliminary report
Event Type
Accident
Date
January 21, 1982
Injury Outcomes
4 injuries (4 fatalities)
Location
Boise, ID
Aircraft
Cessna P210N
Tail Number
N4947K
Operator
Howard E Johnson
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
SEA82FA032
AFTER TAKEOFF WHILE CLIMBING THROUGH 10,000 FT MSL THE PILOT DECLARED AN EMERGENCY. THE PILOT STATED HE WAS HAVING VACUUM PROBLEMS AND WAS ON PARTIAL PANEL. SALT LAKE CITY ARTCC ANSWERED HIS REQUEST FOR GUIDANCE TO A VFR LANDING WITH NO GYRO VECTOR INSTRUCTIONS BACK TO BOISE. THE PILOT THEN STATED HE HAD A PROBLEM WITH THE TURN COORDINATOR AND THAT THE VACUUM PUMP WAS NOT OPERATING. AT 0856 THE AIRCRAFT DISAPPEARED FROM THE SALT LAKE CITY ARTCC AND BOISE APPROACH CONTROL RADAR SCOPES. NO FURTHER RADIO CONTACT WAS MADE WITH THE AIRCRAFT. THE WRECKAGE WAS FOUND 18 MILES SE OF BOISE AFTER HAVING IMPACTED THE GROUND AT A NEAR VERTICAL ANGLE, STRIKING THE NOSE AND LEFT WING FIRST. EXAMINATION OF THE DRY AIR VACUUM PUMP REVEALED PREIMPACT FAILURE DAMAGE.
Full Narrative
AFTER TAKEOFF WHILE CLIMBING THROUGH 10,000 FT MSL THE PILOT DECLARED AN EMERGENCY. THE PILOT STATED HE WAS HAVING VACUUM PROBLEMS AND WAS ON PARTIAL PANEL. SALT LAKE CITY ARTCC ANSWERED HIS REQUEST FOR GUIDANCE TO A VFR LANDING WITH NO GYRO VECTOR INSTRUCTIONS BACK TO BOISE. THE PILOT THEN STATED HE HAD A PROBLEM WITH THE TURN COORDINATOR AND THAT THE VACUUM PUMP WAS NOT OPERATING. AT 0856 THE AIRCRAFT DISAPPEARED FROM THE SALT LAKE CITY ARTCC AND BOISE APPROACH CONTROL RADAR SCOPES. NO FURTHER RADIO CONTACT WAS MADE WITH THE AIRCRAFT. THE WRECKAGE WAS FOUND 18 MILES SE OF BOISE AFTER HAVING IMPACTED THE GROUND AT A NEAR VERTICAL ANGLE, STRIKING THE NOSE AND LEFT WING FIRST. EXAMINATION OF THE DRY AIR VACUUM PUMP REVEALED PREIMPACT FAILURE DAMAGE.
Flight
Event TypeAccident
Event Time07:56 PST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna P210N
Tail NumberN4947K
Aircraft CategoryAir
DamageDestroyed
OperatorHoward E Johnson
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520P · Reciprocating · 285
Seats6
People & Injuries
Injury Summary4 injuries (4 fatalities)
Fatal4
Serious0
Minor0
Uninjured0
Total4
Crew 1Age 50 · Second Class
Conditions
ConditionsIMC
LightDaylight
Wind310° @ 5 kt
Visibility1 sm
CeilingNone
Temperature / Dew Point66 F / 0 C
Altimeter29.00 inHg
Observation Time09:00