Cpr pilot encounters severe turbulence on approach to sbm and lands without clearance.

Attributes
ACN	442227
Time
Date	199907
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sbm.airport
State Reference	WI
Altitude	msl single value : 2800
Environment
Flight Conditions	Mixed
Weather Elements	Rain Thunderstorm Turbulence
Light	Night
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	approach : instrument non precision
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 60 flight time total : 6000 flight time type : 60
ASRS Report	442227
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	aircraft equipment problem : less severe inflight encounter : weather inflight encounter : turbulence non adherence : published procedure non adherence : far non adherence : clearance other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance Weather Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During GPS runway 3 approach into sbm, encountered severe turbulence in thunderstorm on approach. Not sure if given approach clearance and unable to communicate with ATC, decided to continue approach and deal with it on the ground. Successful landing. Flight plan canceled on the ground through another aircraft.

Original NASA ASRS Text

Title: CPR PLT ENCOUNTERS SEVERE TURB ON APCH TO SBM AND LANDS WITHOUT CLRNC.

Narrative: DURING GPS RWY 3 APCH INTO SBM, ENCOUNTERED SEVERE TURB IN TSTM ON APCH. NOT SURE IF GIVEN APCH CLRNC AND UNABLE TO COMMUNICATE WITH ATC, DECIDED TO CONTINUE APCH AND DEAL WITH IT ON THE GND. SUCCESSFUL LNDG. FLT PLAN CANCELED ON THE GND THROUGH ANOTHER ACFT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.