DV. Parachutes
Good question, well presented, deserves an answer.
Perhaps it refers to other installations (static seats etc)?
Of course Ejection seat installations will have been subjected to comprehensive qualification test programs to prove (or not) whatever the system in a particular installation is. The parachute DA will undoubtedly have bought in to those tests, and I should think they had their own set of parachute installation QTP.
Perhaps PPruner "dragartist" or someone from Survitec (Maufacturers of GQRange) may wish to comment?