NTSB Identification: ATL87LA073.
The docket is stored on NTSB microfiche number 33276.
Accident occurred Wednesday, February 18, 1987 in NASHVILLE, TN
Probable Cause Approval Date: 05/02/1988
Aircraft: PIPER PA-32RT-300, registration: N31590
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.

THE PLT REPORTED THAT HE CONDUCTED AN ILS APPCH BEHIND MIXED JET AND TURBOPROP TRAFFIC; THE ACFT ENCOUNTERED AN 'EXTREME DOWNDRAFT' WHILE ON APPCH AND THE ACFT VERTICAL SPEED WENT FROM ABOUT 500 FPM TO ABOUT 1200 FPM. HE ATTEMPTED TO RECOVER BY ADDING FULL POWER, INCREASING PITCH, AND REDUCING THE FLAP SETTING FROM 25 DEGREES TO 10, BUT WAS UNABLE TO SUFFICIENTLY ARREST THE SINK RATE. THE ACFT SUBSEQUENTLY STRUCK TWO APPCH LIGHTS AND A LOCALIZER PLATFORM ABOUT 1/4 MILE FROM THE RWY. A BEECH 99 LANDING ABOUT 2 MINUTES AHEAD OF THE ACFT REPORTED NO PROBLEM ON THE APPCH. THE FREEZING LEVEL AT NASHVILLE WAS REPORTED TO 900 FT MSL AT 1750 CST. THE PLT REPORTED THAT ABOUT 20 MINUTES OF THE 30 MINUTE FLT HAD BEEN IN THE CLOUDS. AN AIR CARRIER FLT THAT LANDED ABOUT 10 MINUTES AHEAD REPORTED EXPERIENCING 'LOTS OF RIME ICE'. THE PA-32RT-300 POH STATES THAT THE FLAPS SHOULD BE SLOWLY RETRACTED ONLY WHEN A POSITIVE CLIMB RATE IS ESTABLISHED WHEN INITIATING A GO-AROUND FROM A LDG APPCH.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

STALL/MUSH

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WING..ICE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

STABILIZER..ICE



Contributing Factors

WEATHER CONDITION..ICING CONDITIONS


Contributing Factors

PREFLIGHT BRIEFING SERVICE..INADEQUATE..PILOT IN COMMAND


Contributing Factors

WEATHER EVALUATION..INADEQUATE..PILOT IN COMMAND


Contributing Factors

PROCEDURES/DIRECTIVES..NOT FOLLOWED..PILOT IN COMMAND


Contributing Factors

RAISING OF FLAPS..PREMATURE..PILOT IN COMMAND

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