Narrative:

I heard tower clear me for takeoff [and] I read back instructions. On the takeoff roll tower instructed me to make left turn; as I began the turn I saw [an air carrier aircraft] on the converging runway taking off. [I] turned to avoid; as tower told me I was not cleared to takeoff.

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Original NASA ASRS Text

Title: C208B flight crew reported a NMAC shortly after takeoff when they took a takeoff clearance meant for another aircraft with a similar call sign.

Narrative: I heard Tower clear me for takeoff [and] I read back instructions. On the takeoff roll Tower instructed me to make left turn; as I began the turn I saw [an air carrier aircraft] on the converging runway taking off. [I] turned to avoid; as Tower told me I was not cleared to takeoff.

Data retrieved from NASA's ASRS site 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.