FUEL STARVATION RESULTS IN OFF ARPT LNDG; NO DAMAGE OR INJURIES.

Narrative

FLEW FROM NORTH OMAHA ARPT; NE; TO SPIRIT LAKE ARPT; IA; ON 6/SUN/88 WITH CALCULATED 4 HRS OF FUEL. LANDED SPIRIT LAKE AFTER FLT OF 1 1/2 HRS. AIRPLANE USES 80 OCTANE AVGAS; ONLY 100 LL AVAILABLE AT SPIRIT LAKE. DEPARTED SPIRIT LAKE FOR NORTH OMAHA THAT SAME DAY AT 9 PM. DID NOT TOP OFF TANKS DUE TO NO FUEL OF PROPER OCTANE AVAILABLE. ENCOUNTERED VERY STRONG HEADWINDS SUCH THAT I DECIDED TO LAND AT IDA GROVE ARPT; IA; AFTER 1 1/2 HRS OF FLYING; LEAVING A CALCULATED RESERVE OF 3/4 HR FUEL. NEXT MORNING; JUNE; DISCOVERED THAT ARPT WAS REPLACING FUEL TANKS AND WAS NOT CAPABLE OF REFUELING MY ACFT. ALTHOUGH AIRPLANE IS STC FOR MOGAS HAVING NO GND TRANSPORT; I DECIDED TO REFUEL AT DENISON ARPT. 24 MI DUE S. DEPARTED IDA GROVE AT XA20 AM AND AFTER 1/4 HR OF FLYING ENG STOPPED DUE TO FUEL EXHAUSTION. I MADE A SUCCESSFUL PWR OFF LNDG IN AN OATS YIELD 5 NM NW OF DENISON; IA. THERE WAS NO INJURY TO MYSELF OR PAX AND NO DAMAGE TO AIRPLANE. AFTER OBTAINING HELP FROM FARMER; DENISON ARPT PERSONNEL AND THE HWY PATROL MY ACFT WAS FUELED AND TAXIED TO HWY 59. WITH THE HWY PATROL OFFICER BLOCKING THE HWY I TOOK OFF FOR DENISON ARPT. AFTER TOPPING ALL TANKS THERE I CONTINUED TO NORTH OMAHA ARPT. ALTHOUGH FUEL GAUGE INDICATED CALCULATED FUEL AMOUNT THROUGHOUT TRIP I HAD NEGLECTED TO TAKE INTO ACCOUNT 1/2 HR FLYING TIME! I HAD THE OPPORTUNITY TO TOP OFF TANKS AT SEVERAL ARPTS ENRTE THE PREVIOUS EVENING; BUT DUE TO THEIR PROX TO SPIRIT LAKE (LESS THAN 25 MI( I DECIDED TO BYPASS THEM. SHOULD HAVE PUT AT LEAST 5 GALS OF MOGAS IN TANK AT IDA GROVE; BUT LACK OF TRANSPORT AND NOT BEING SURE OF THE QUALITY OF OFF ARPT MOGAS PLAYED PART IN DECISION TO REFUEL AT DENISON. OVER FAMILIARIZATION WITH TANKS BEFORE CROSS COUNTRY FLYING; EVEN IF WITH 100 LL OCTANE; PLAYED A PART IN EVENTUAL FUEL EXHAUSTION.