Narrative:

While climbing through 4;300 ft up to my cruise altitude of 7;000 ft kansas city center notified me of VFR traffic at 11 O'clock; less than a mile; at 4;500 ft; unverified. I was hand flying at the time; and looked for the traffic. Only when I leaned forward to look around the aircraft structure between the crew door and the windshield did I see a bonanza at less than half a mile near my altitude. I was climbing at about 130 KTS; so I increased my rate of climb as I kept a close eye on the bonanza. I climbed over the bonanza and passed over him by 100-200 ft as I saw him disappear underneath my left engine. I notified ATC that the bonanza passed close to me and asked if he was on her frequency. According to ATC they were not talking with him.I could not see the traffic coming from my left because it was blocked by the aircraft structure. The ATC traffic notification; while very helpful; came late. Equipment such as TCAS or tis-B would have been very helpful to prevent this situation from occurring.

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Original NASA ASRS Text

Title: A windshield pillar restricted the ability of a CE-402 pilot to spot threatening traffic during his IFR climb. A timely advisory from ATC provided the impetus to expand his traffic watch and take appropriate evasive action.

Narrative: While climbing through 4;300 FT up to my cruise altitude of 7;000 FT Kansas City Center notified me of VFR traffic at 11 O'clock; less than a mile; at 4;500 FT; unverified. I was hand flying at the time; and looked for the traffic. Only when I leaned forward to look around the aircraft structure between the crew door and the windshield did I see a Bonanza at less than half a mile near my altitude. I was climbing at about 130 KTS; so I increased my rate of climb as I kept a close eye on the Bonanza. I climbed over the Bonanza and passed over him by 100-200 FT as I saw him disappear underneath my left engine. I notified ATC that the Bonanza passed close to me and asked if he was on her frequency. According to ATC they were not talking with him.I could not see the traffic coming from my left because it was blocked by the aircraft structure. The ATC traffic notification; while very helpful; came late. Equipment such as TCAS or TIS-B would have been very helpful to prevent this situation from occurring.

Data retrieved from NASA's ASRS site as of July 2013 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.