Narrative:

Aircraft X operated by company a flew conflicting jump runs at zph. This created a safety problem and coordination problem with the 3 company B aircraft. Possible violations of far 105 (105.13, 105.14, 105.15, 105.17, 105.29, 105.33, 105.35, 105.43). Safety violation: aircraft X dropped while on ZJX frequency at an altitude of 13500' AGL. Company B aircraft worked tra approach and dropped at 12500' AGL. The jump aircraft were on different frequencys and altitudes and dropping through the same column of air.

Related reports:

Google
 

Original NASA ASRS Text

Title: PARACHUTE OPERATOR COMPLAINS ABOUT ARPT APPROVING ANOTHER PARACHUTE COMPANY TO OPERATE AT SAME ARPT. CITES AN INCIDENT WHERE BOTH COMPANIES WERE OVER ARPT AND JUMPED AT THE SAME TIME WITH NO PRIOR COORD.

Narrative: ACFT X OPERATED BY COMPANY A FLEW CONFLICTING JUMP RUNS AT ZPH. THIS CREATED A SAFETY PROB AND COORD PROB WITH THE 3 COMPANY B ACFT. POSSIBLE VIOLATIONS OF FAR 105 (105.13, 105.14, 105.15, 105.17, 105.29, 105.33, 105.35, 105.43). SAFETY VIOLATION: ACFT X DROPPED WHILE ON ZJX FREQ AT AN ALT OF 13500' AGL. COMPANY B ACFT WORKED TRA APCH AND DROPPED AT 12500' AGL. THE JUMP ACFT WERE ON DIFFERENT FREQS AND ALTS AND DROPPING THROUGH THE SAME COLUMN OF AIR.

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.