# Preliminary Impact Assessment of the Ad Hoc Separation Minima: A New Separation Mode
## Appendix A ATC Tasks Specifications  
This annex provides the tasks and their associated times, as defined in RAMS, for the computation of the ATCO WL, extracted from [42].  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multicolumn{4}{c}{**Conflict Search**} \\ \hline
**Task id** & **Task Description** & \multicolumn{2}{c}{**Execution Time (seconds)**} \\  & **Planning ATCO** & **Tactical (Executive) ATCO** \\ \hline CFSh1 & Conflict search to establish an initial clearance for a night entering a sector in climb or descent & 9 & 4 \\ CFSh2 & Conflict search by a controlling sector to establish a sector planning clearance & 9 & 2 \\ CFSh3 & Conflict search to establish a sector exit clearance & 3 & 3 \\ CFSh4 & Conflict search to establish an new sector planning clearance & 8 & 3 \\ CFSh5 & Updating of flight information and notification of planning re-clearance to the tactical controller & 4 & 4 \\ CFSh6 & Receipt and acknowledgement by the tactical controller of a planning reclearance & 2 & 2 \\ \hline \hline \multicolumn{4}{c}{**Tight Data Management**} \\ \hline
**Task id** & **Task Description** & \multicolumn{2}{c}{**Execution Time (seconds)**} \\  & **Planning ATCO** & **Tactical (Executive) ATCO** \\ \hline FludDataMg1 & Loading and distribution of flight progress strips (without conflict search) & - & 6 \\ FludDataMg2 & Removal of flight progress strips and associated tasks & 10 & 5 \\ \hline \multicolumn{4}{c}{**R/T Task**} \\ \hline
**Task id** & **Task Description** & \multicolumn{2}{c}{**Execution Time (seconds)**} \\  & **Planning ATCO** & **Tactical (Executive) ATCO** \\ \hline RTComm1 & First call from an aircraft entering the first sector of an ACC & 5 & 10 \\ RTComm2 & First call from an aircraft entering another sector of the same ACC & 5 & 10 \\ RTComm3 & Instruction to aircraft to avoid a military area & 5 & 10 \\ RTComm4 & Report from an aircraft on passing or reaching a specified level & 3 & 6 \\ RTComm5 & Instruction to aircraft to comply with a new planning clearance & 5 & 10 \\ RTComm6 & (level change, start of climb or descent, or reallocation of stack level to inbound aircraft) & 2 & 8 \\ RTComm6 & Last message to an aircraft leaving an ATC sector & & 2 \\ \hline \multicolumn{4}{c}{**Co-Ordination**} \\ \hline
**Task id** & **Task Description** & \multicolumn{2}{c}{**Execution Time (seconds)**} \\  & **Planning ATCO** & **Tactical (Executive) ATCO** \\ \hline Coord1 & Inter sector co-ordination (N/A) & 15 & - \\ Coord2 & Inter center co-ordination (N/A) & 20 & - \\ Coord3 & Co-ordination(s) required for aircraft departing from a “local” airport & 20 & - \\ Coord4 & Co-ordination(s) required for a flight arriving to a “local” airport & 15 & - \\ Coord5 & Special co-ordination (e.g., with a military unit... ) & 25 & - \\ \hline \hline \end{tabular}
\end{table}
Table 10: RANS tasks and times for the simulation of ATCO WL.  
\begin{table}
\begin{tabular}{c l c c} \hline \hline  & & **Radar Task** & \\ \hline
**Task id** & **Task Description** & \multicolumn{2}{c}{**Execution Time (seconds)**} \\  & & **Planning ATCO** & **Tectical (Executive) ATCO** \\ \hline Radar1 & Radar conflict search at sector entry & - & 3 \\ Radar2 & Conflict resolution by radar intervention: & 5 & 65 \\ Radar3 & 2 aircraft, same direction, stable & 5 & 65 \\  & Conflict resolution by radar intervention: & 5 & 65 \\  & 2 aircraft, same direction, at least one climbing or descending (unstable) & 5 & 65 \\ Radar4 & Conflict resolution by radar intervention: & 5 & 66 \\ Radar5 & Conflict resolution by radar intervention: & 5 & 66 \\ Radar6 & Conflict resolution by radar intervention: & 5 & 66 \\  & 2 aircraft, on crossing tracks, at least one climbing or descending & 5 & 72 \\ Radar7 & Conflict resolution by radar intervention: & 5 & 72 \\ \hline \hline \end{tabular}
\end{table}
Table 11: _Cont._