Loss of aircraft control.

Attributes
ACN	235547
Time
Date	199302
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dbq
State Reference	IA
Altitude	msl bound lower : 1300 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Small Transport
Flight Phase	cruise other
Route In Use	enroute airway : zau
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 10200 flight time type : 980
ASRS Report	235547
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : nmac non adherence : far other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control flight crew : became reoriented
Consequence	other other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

I was flying level at 11000 ft MSL after departing moline, il, for necedah, wi. I had leveled for about 10 mins. I was checking heater for operation, as well as looking for flight log, looking aft and over my right shoulder, as well as turned slightly in my seat in that direction. Very suddenly, I was thrown up and to the outside (left) of the cabin. I am not sure of the sequences from there. I don't think I was unconscious, but I was not able to react to my situation. After recovery at about 500 ft AGL from a steep dive, I was able to determine 1) the autoplt was disconnected, 2) the switch for the navigation/communications/transponder was broken off at the base in the off position (probably by my head). I started climbing and used a key to turn the radios back on to talk to center. I also did a flight check of controls/surfaces. I cancelled IFR and proceeded VFR to destination. I have checked all system in autoplt/radios and found no failures except broken radio master switch. I am not sure of all that happened.

Original NASA ASRS Text

Title: LOSS OF ACFT CTL.

Narrative: I WAS FLYING LEVEL AT 11000 FT MSL AFTER DEPARTING MOLINE, IL, FOR NECEDAH, WI. I HAD LEVELED FOR ABOUT 10 MINS. I WAS CHKING HEATER FOR OP, AS WELL AS LOOKING FOR FLT LOG, LOOKING AFT AND OVER MY R SHOULDER, AS WELL AS TURNED SLIGHTLY IN MY SEAT IN THAT DIRECTION. VERY SUDDENLY, I WAS THROWN UP AND TO THE OUTSIDE (L) OF THE CABIN. I AM NOT SURE OF THE SEQUENCES FROM THERE. I DON'T THINK I WAS UNCONSCIOUS, BUT I WAS NOT ABLE TO REACT TO MY SIT. AFTER RECOVERY AT ABOUT 500 FT AGL FROM A STEEP DIVE, I WAS ABLE TO DETERMINE 1) THE AUTOPLT WAS DISCONNECTED, 2) THE SWITCH FOR THE NAV/COMS/XPONDER WAS BROKEN OFF AT THE BASE IN THE OFF POS (PROBABLY BY MY HEAD). I STARTED CLBING AND USED A KEY TO TURN THE RADIOS BACK ON TO TALK TO CTR. I ALSO DID A FLT CHK OF CTLS/SURFACES. I CANCELLED IFR AND PROCEEDED VFR TO DEST. I HAVE CHKED ALL SYS IN AUTOPLT/RADIOS AND FOUND NO FAILURES EXCEPT BROKEN RADIO MASTER SWITCH. I AM NOT SURE OF ALL THAT HAPPENED.

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.