C150 PLT ENCOUNTERS OPPOSITE DIRECTION LNDG TFC ON UNCTLED ARPT RWY.

Narrative

I WAS PREPARING TO CROSS RWY 32 AT TOLEDO METCALF ARPT (TDZ) FROM THE S TXWY IN THE VICINITY OF THE APCH END OF RWY 32. I STOPPED SHORT OF THE HOLD SHORT LINE. I LOOKED TO THE E TOWARD THE APCH END OF RWY 14 AND THEN LOOKED W TO THE APCH END OF RWY 32. THE ACFT RADIO WAS ON AND TUNED TO THE CTAF FREQ. THE AUDIO PANEL WAS SET TO SPEAKER AND I WAS USING THE HAND MIKE WITHOUT A HEADSET. AT THE TIME I WAS PREPARING TO CROSS RWY 32 THERE WAS ANOTHER ACFT ON THE OPPOSITE SIDE TXWY. I LOOKED AGAIN TO THE W (L) AND ANNOUNCED ON THE CTAF FREQ THAT I WAS GOING TO TAXI ON RWY 32. I LOOKED AWAY FROM THE RWY TO POS THE MIKE IN THE BRACKET AND PULLED ONTO RWY 32. AT THE CTR OF THE RWY I SAW THE LEARJET COMING DIRECTLY AT MY ACFT AND ABOUT 2500 FT AWAY. WE BOTH STEERED TO THE R SIDE OF THE RWY; MY ACFT ON THE N SIDE AND OTHER ACFT ON THE S SIDE OF RWY 32/14. THE HORIZ DISTANCE BTWN ACFT WAS APPROX 20 FT. WHILE I HAD LOOKED UP THE RWY; I DID NOT SEE THE LEAR NOR DID I HEAR HIM ANNOUNCE HIS POS IN THE PATTERN. WE WERE BOTH VERY FORTUNATE. HUMAN PERFORMANCE CONSIDERATIONS: MY ATTN WAS DIVERTED FROM THE RWY WHEN I REPLACED THE HAND MIKE IN THE STORAGE BRACKET. IF I HAD BEEN USING A HEADSET; MY ATTN WOULD HAVE REMAINED FOCUSED ON THE RWY AND I MIGHT HAVE SEEN THE LEAR LNDG.