Narrative:

Was coming into land on runway 4L in bos. A gulfstream was ahead of me and was landing 4R. While landing 4L; I noticed the gulfstream approach my runway and I was expecting him to hold short of runway 4L on runway 33R per ATC instructions. As I touched down on runway 4L; I saw him taxi slightly onto my runway so I applied heavy brake pressure to stop quickly at the same time boston tower was ordering the gulfstream to stop! I stopped around taxiway quebec short of the intersecting runway 33L. I exited runway 4L on runway 33L and then made a turn onto taxiway november and taxied to the ramp via taxiway bravo and echo. Taxi-in and parking was normal.

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Original NASA ASRS Text

Title: An ERJ-170 landed on BOS Runway 4L and braked aggressively as another aircraft exited Runway 4R and began to enter 4L after being told to hold short.

Narrative: Was coming into land on Runway 4L in BOS. A Gulfstream was ahead of me and was landing 4R. While landing 4L; I noticed the Gulfstream approach my runway and I was expecting him to hold short of Runway 4L on Runway 33R per ATC instructions. As I touched down on Runway 4L; I saw him taxi slightly onto my runway so I applied heavy brake pressure to stop quickly at the same time Boston Tower was ordering the Gulfstream to STOP! I stopped around Taxiway Quebec short of the intersecting Runway 33L. I exited Runway 4L on Runway 33L and then made a turn onto Taxiway November and taxied to the ramp via taxiway Bravo and Echo. Taxi-in and parking was normal.

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.