The near miss between the 172 and an Embraer Regional Jet at Gulfport-Biloxi (Mississippi) Airport last year was caused by the controller handling the flights, according to the NTSB.
The two airplanes were both cleared to take off, the 172 on Runway 18 and moments later the ERJ on intersecting Runway 14. The airplanes missed each other while at approximately 300 feet agl. Their vertical offset was “0″ feet, according to the report.