Narrative:

I was made aware of aluminum speed tape that was applied to the first officer side air data computer ports that I flew 4 legs in. As to where or when the tape was applied I am unable to answer. The first officer taking the plane from us on a crew change found the speed tape covering both first officer's air data computer ports in a vertically applied position. The plane flew just fine for us with no EICAS messages or irregularities in altitude; airspeed or vertical speed control on either side. I am unsure if my first officer missed the tape on his walk around or if someone with foul intent applied this tape. A good quality preflight would have caught this; if it was in fact applied before we took the plane.

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Original NASA ASRS Text

Title: An EMB-145 crew was notified that tape was discovered over the First Officer side ADC port by the receiving crew during a crew change they had flown numerous legs that morning.

Narrative: I was made aware of aluminum speed tape that was applied to the First Officer side ADC ports that I flew 4 legs in. As to where or when the tape was applied I am unable to answer. The First Officer taking the plane from us on a crew change found the speed tape covering both First Officer's ADC ports in a vertically applied position. The plane flew just fine for us with no EICAS messages or irregularities in altitude; airspeed or vertical speed control on either side. I am unsure if my First Officer missed the tape on his walk around or if someone with foul intent applied this tape. A good quality preflight would have caught this; if it was in fact applied before we took the plane.

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.