NTSB Identification: CHI88LA044.
The docket is stored on NTSB microfiche number 37616.
Accident occurred Monday, January 18, 1988 in ST PAUL, MN
Probable Cause Approval Date: 01/16/1990
Aircraft: BEECH A36, registration: N4479W
Injuries: 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
DRG ARR, THE FLT WAS VECTORED FOR A LOC RWY 32 APCH. AS THE ACFT DSCNDD FM 3400' TO 2500' MSL (TO THE FNL APCH ALT), IT ENTERED CLDS & ENCTRD UNFORECAST ICING CONDS. WHILE PROVIDING VECTORS, THE MINNEAPOLIS APCH CTLR NOTICED THE ACFT WAS NOT TRACKING ON THE EXPECTED COURSE & ADZD THE PLT TO CHECK HIS DG (DRCTNL GYRO) & COMPASS. AFTER THE FLT WAS CLRD FOR THE APCH, THE CTLR NOTED THE ACFT WAS TRACKING PARALLEL TO THE RGT OF THE LOC. THE FLT WAS REVECTORED FOR THE APCH &WAS ALIGNED WITH THE LOC ON THE 2ND ATMT. THE PLT WAS REMINDED AGAIN THAT THE ACFT WAS NOT TRACKING ON THE ASSIGNED HDG.THE PLT STATED HE ADZD THE CTLR THAT THE ACFT WAS 'PICKING UP A LOT OF ICE' & THAT HE REQUESTED NO DELAYS, BUT THERE WASNO REPLY. HOWEVER, THE TRANSCRIPT DID NOT CONTAIN THE PLT'S ICING ADZY. WHILE APCHG TO LAND, THE ACFT LOST AIRSPEED & ALT. THE PLT INITIATED CORRECTIVE ACTION, BUT THE ACFT LNDD HARD & THE NOSE GEAR COLLAPSED. THE FSS BRIEFER RPRTD THERE WAS NO FORECAST FOR ICING CONDS IN INFO HE USED FOR BRIEFING. ICE WAS FND ON THE LEADING EDGES OF THE WINGS.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:AIRSPEED..INADEQUATE..PILOT IN COMMAND
The National Transportation Safety Board determines the probable cause(s) of this accident to be:WING..ICE
FLIGHT/NAV INSTRUMENTS,DIRECTIONAL GYRO..ERRATIC
WEATHER CONDITION..ICING CONDITIONS
DIVERTED ATTENTION..PILOT IN COMMAND
WEATHER FORECAST..INACCURATE..NWS PERSONNEL
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