Narrative:

PA28 X on left downwind runway 29L, while PA28 Y entered left downwind runway 29L nearly broad-siding PA28 X on his entry. I just did have enough time to alert PA28 X of the impending situation. The aircraft missed each other.

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Original NASA ASRS Text

Title: ATCT LCL CTLR OBSERVED A PA28 ENTERING THE L TFC PATTERN FOR RWY 29L HAVE AN NMAC WITH ANOTHER PA28 THAT WAS ALREADY ESTABLISHED ON DOWNWIND. CTLR BARELY HAD TIME TO WARN THE ACFT OF THE POTENTIAL CONFLICT.

Narrative: PA28 X ON L DOWNWIND RWY 29L, WHILE PA28 Y ENTERED L DOWNWIND RWY 29L NEARLY BROAD-SIDING PA28 X ON HIS ENTRY. I JUST DID HAVE ENOUGH TIME TO ALERT PA28 X OF THE IMPENDING SIT. THE ACFT MISSED EACH OTHER.

Data retrieved from NASA's ASRS site as of July 2007 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.