An small transport pilot suffered from apparent carbon monoxide poisoning.

Attributes
ACN	272577
Time
Date	199405
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : fsm
State Reference	AR
Altitude	agl bound lower : 0 agl bound upper : 19000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw tracon : fsm tower : yip
Operator	other
Make Model Name	Baron 58/58TC
Operating Under FAR Part	Part 91
Flight Phase	cruise other descent other other
Flight Plan	IFR
Person 1
Affiliation	government other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 80 flight time total : 3500 flight time type : 1000
ASRS Report	272577
Person 2
Affiliation	government other
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I was in a baron 58P on an IFR flight plan from abq to fsm, at FL190 1 hour out of fsm (245 mi). I became nauseous and had tingling in my arms and hands. Eyes were burning and watering. I got on 02 which seemed to help for a while, but then the symptoms returned and I was having difficulty with blurred vision and staying awake. I asked for lower altitude and descended below 10000 ft. After numerous hand-offs with ZFW, I was given ft smith approach. The conditions were special VFR at fsm and IMC elsewhere for approachs. I asked for a special VFR approach visual into fsm with radar vectors to final. After visually sighting fsm airport, I declared an emergency with fsm approach. To receive priority in landing as there was numerous other traffic doing practice approachs. After an uneventful landing, I taxied into FBO and was met by an emt and an ambulance arrived and transported to st edwards hospital. After tests -- nothing conclusive. A hole in the air duct in the baron 580 was found and it is possible that exhaust fumes were piped through the supercharger pressurization into the cabin. The aircraft now has a carbon monoxide detector in it, and the hole repaired. Note -- a carbon monoxide test was not performed in ft smith although I requested one.

Original NASA ASRS Text

Title: AN SMT PLT SUFFERED FROM APPARENT CARBON MONOXIDE POISONING.

Narrative: I WAS IN A BARON 58P ON AN IFR FLT PLAN FROM ABQ TO FSM, AT FL190 1 HR OUT OF FSM (245 MI). I BECAME NAUSEOUS AND HAD TINGLING IN MY ARMS AND HANDS. EYES WERE BURNING AND WATERING. I GOT ON 02 WHICH SEEMED TO HELP FOR A WHILE, BUT THEN THE SYMPTOMS RETURNED AND I WAS HAVING DIFFICULTY WITH BLURRED VISION AND STAYING AWAKE. I ASKED FOR LOWER ALT AND DSNDED BELOW 10000 FT. AFTER NUMEROUS HAND-OFFS WITH ZFW, I WAS GIVEN FT SMITH APCH. THE CONDITIONS WERE SPECIAL VFR AT FSM AND IMC ELSEWHERE FOR APCHS. I ASKED FOR A SPECIAL VFR APCH VISUAL INTO FSM WITH RADAR VECTORS TO FINAL. AFTER VISUALLY SIGHTING FSM ARPT, I DECLARED AN EMER WITH FSM APCH. TO RECEIVE PRIORITY IN LNDG AS THERE WAS NUMEROUS OTHER TFC DOING PRACTICE APCHS. AFTER AN UNEVENTFUL LNDG, I TAXIED INTO FBO AND WAS MET BY AN EMT AND AN AMBULANCE ARRIVED AND TRANSPORTED TO ST EDWARDS HOSPITAL. AFTER TESTS -- NOTHING CONCLUSIVE. A HOLE IN THE AIR DUCT IN THE BARON 580 WAS FOUND AND IT IS POSSIBLE THAT EXHAUST FUMES WERE PIPED THROUGH THE SUPERCHARGER PRESSURIZATION INTO THE CABIN. THE ACFT NOW HAS A CARBON MONOXIDE DETECTOR IN IT, AND THE HOLE REPAIRED. NOTE -- A CARBON MONOXIDE TEST WAS NOT PERFORMED IN FT SMITH ALTHOUGH I REQUESTED ONE.

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.