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NTSB Report
February 6, 1990 · Piper PA-46-350P · N8888M
Bakersfield, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 6, 1990
Injury Outcomes
2 injuries (2 fatalities)
Location
Bakersfield, CA
Aircraft
Piper PA-46-350P
Tail Number
N8888M
Operator
James W Hager
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX90FA084
BFR TKOF, PLT WAS ADZ OF IFR CONDS ALONG 1ST PART OF ROUTE, WITH FLT PRCTNS FOR OCNL MOD TURBC BLO 15,000' & MIXED ICG FM FRZG LVL (6000') TO 18,000'. HE FILED IFR FLT PLAN WITH CRUISE ALT OF 11,000'. DRG DEP, PLT WAS CLRD TO CLIMB TO 9000' & TOLD TO EXPECT CLNC TO 11,000', 5 MIN LTR. RADAR DATA SHOWED, ACFT CLIMBED AT ABT 1500'/MIN & 100 KTS, SLOWING SLIGHTLY ABV 8000'. AT ABT 9000', ACFT STARTED TO LVL & ACCELERATE. IT THEN CLIMBED MOMENTARILY, DEVIATED LATERALLY FM COURSE & ENTERED STEEP DSCNT. IN-FLT BREAKUP OCCURRED & WRECKAGE WAS SCATTERED OVR 4100' AREA. TRAJECTORY STUDY SHOWED BREAKUP OCCURRED BTN 4500' & 6500' AS ACFT WAS IN STEEP DSCNT IN EXCESS OF 266 KTS. METALLURGICAL EXAM OF WINGS & STA- BILIZERS REVEALED FEATURES TYPICAL OF OVERSTRESS SEPN; NO PREEXISTING CRACKS OR DEFECTS WERE FND. THE ACFT WAS RECENTLY PURCHASED. PLT'S SON INDCD PRINCIPAL PRBLM WAS 'TWENTY YEAR LEAP IN TECHNOLOGY' FM PREVIOUSLY OWNED PA-24, THAT PLT HAD DIFFICULTY WITH AVIONICS & FLT DRCTR/AUTOPLT, & THAT HE LACKED DETAIL TRNG IN AUTOPLT EMERGENCIES. (SEE:NTSB/SIR-92/03)
NTSB Probable Cause
THE PILOT'S FAILURE TO ACTIVATE THE PITOT HEAT BEFORE FLYING AT AND ABOVE THE FREEZING LEVEL IN INSTRUMENT METEOROLOGICAL CONDITIONS (IMC), FOLLOWED BY HIS IMPROPER RESPONSE TO ERRONEOUS AIRSPEED INDICATIONS THAT RESULTED FROM BLOCKAGE OF THE PITOT TUBE BY ATMOSPHERIC ICING. CONTRIBUTING TO THE ACCIDENT WAS SPATIAL DISORIENTATION OF THE PILOT.
Full Narrative
BFR TKOF, PLT WAS ADZ OF IFR CONDS ALONG 1ST PART OF ROUTE, WITH FLT PRCTNS FOR OCNL MOD TURBC BLO 15,000' & MIXED ICG FM FRZG LVL (6000') TO 18,000'. HE FILED IFR FLT PLAN WITH CRUISE ALT OF 11,000'. DRG DEP, PLT WAS CLRD TO CLIMB TO 9000' & TOLD TO EXPECT CLNC TO 11,000', 5 MIN LTR . RADAR DATA SHOWED, ACFT CLIMBED AT ABT 1500'/MIN & 100 KTS, SLOWING SLIGHTLY ABV 8000'. AT ABT 9000', ACFT STARTED TO LVL & ACCELERATE. IT THEN CLIMBED MOMENTARILY, DEVIATED LATERALLY FM COURSE & ENTERED STEEP DSCNT. IN-FLT BREAKUP OCCURRED & WRECKAGE WAS SCATTERED OVR 4100' AREA. TRAJECTORY STUDY SHOWED BREAKUP OCCURRED BTN 4500' & 6500' AS ACFT WAS IN STEEP DSCNT IN EXCESS OF 266 KTS. METALLURGICAL EXAM OF WINGS & STA- BILIZERS REVEALED FEATURES TYPICAL OF OVERSTRESS SEPN; NO PREEXISTING CRACKS OR DEFECTS WERE FND. THE ACFT WAS RECENTLY PURCHASED. PLT'S SON INDCD PRINCIPAL PRBLM WAS 'TWENTY YEAR LEAP IN TECHNOLOGY' FM PREVIOUSLY OWNED PA-24, THAT PLT HAD DIFFICULTY WITH AVIONICS & FLT DRCTR/AUTOPLT, & THAT HE LACKED DETAIL TRNG IN AUTOPLT EMERGENCIES. (SEE:NTSB/SIR-92/03)
Flight
Event TypeAccident
Event Time15:48 PST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-46-350P
Tail NumberN8888M
Aircraft CategoryAir
DamageDestroyed
OperatorJames W Hager
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · TIO-540-AE2A · Reciprocating · 350
Seats6
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 74 · Third Class
Conditions
ConditionsUnknown
LightDaylight
Wind310° @ 10 kt
CeilingOvercast 6000 ft
Temperature / Dew Point48 / 43 C
Altimeter30.00 inHg
Observation Time23:50
Weather SourceWFAC