09/21/2012 TSO-C23f APPENDIX 1. MINIMUM PERFORMANCE STANDARD FOR PERSONNEL  PARACHUTE ASSEMBLIES AND COMPONENTS This appendix prescribes the MPS for a personnel parachute assembly and component. The  applicable standard is PIA TS-135 Revision 1.4 issued April 22, 2010  Performance Standards for  Personnel Parachute Assemblies and Components,  as modified for this TSO:  “Cognizant Agency”  - The Federal Aviation Administration (FAA) or civil aviation  authorities recognized in bilateral agreements by the FAA,  Stitching should not ravel when broken . “Generally” reduces the requirement for stitch  choice, and adversely impacts the current standard. Table 2 is not relevant to this requirement. Testing of a packed assy will show if the main  parachute will interfere with the proper function of the reserve parachute.  The worst case is the maximum operating weight.  We omitted the Method (2) testing, for not providing an equivalent level of safety to current standard. This method is directed at high performance and experience parachutists in  sport and skydiving activities. Novice or less experienced parachutists in emergency conditions  due to incapacitation, panic, etc., may not be able to safely deploy and land.  We have to consider the safety of all jumpers, not just the highly skilled, highly experienced. It is argued that the risks the experienced jumpers are exposing themselves to, are mitigated by their skill and experience. To allow the increased velocity may improve the safety of highly skilled, highly experienced jumpers, but it erodes the safety for the beginner, incapacitated, panicked, or a jumper who has  gotten himself into a treacherous landing area. 1. Page 2, replace Para, 2.1.i. to read as follows:  2. Page 5, Para. 4.1.2. delete: “generally” . 3. Page 5 , Para. 4.1.3. delete: “Ref: Table 2”. 4. Page 9 , Para. 4.3.7. in first sentence  delete: “a weight not more than”. 5. Page 11 , disregard paragraph 4.3.9.1., Rate of Descent Tests (Method 2).  Page 5  Change 1 (December 2015)  A-52