GLIDEANGLE 1 #1 March 27, 2014 How many effective versions of TSO-23 have there been? Clearly there were versions b, c, d, & f. Was there ever a version a? As I recollect, version e had a short life and was recalled or suspended. Am I correct? Were any canopies or harness/contaniers ever approved under e? Thanks!The choices we make have consequences, for us & for others! Quote Share this post Link to post Share on other sites
IanHarrop 42 #2 March 27, 2014 A reference, go to Active Historical on this page http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgTSO.nsf/MainFrame?OpenFrameSet"Where troubles melt like lemon drops, away above the chimney tops, that's where you'll find me" Dorothy Quote Share this post Link to post Share on other sites
councilman24 37 #3 March 27, 2014 Nothing was ever called C23a. The first was C23, and the second C23b. I assume TSO C23 was the same as the regulations in the Civil Air Regulations. I have those as published in 1944. NAS-804, Aug 24, 1949 was the technical reference for TSO C23b, implemented in 3/29/62. After C23d the Parachute Industry Association, rather than the Society of Automotive Engineers, was tasked with developing the underlying technical document spelling out the performance standards and testing required as well as other things. PIA issued that document at TS-135. (I won't get into versions.) When the FAA issued the TSO C23e document referencing the PIA TS-135 standard the listed many exceptions the the PIA document that we had worked for over a decade on. Then 'changes' they mandated were unacceptable to the Parachute Certification Standards Committee (PCSC) so the PIA rescinded the document and removed it from our website. Without the underlying technical document the FAA had to cancel TSO C23e since it referenced a non-existent standard. Later negotiations Between the PIA PCSC and the FAA resulted in some modifications to TS-135 and the issuance of TSO C23f referencing the current version of the PIA standard. There is still one exception negating an alternative landing performance testing procedure. Read the current TSO at the link in the post above and the TS-135 at PIA.COM to see what was removed by the the FAA. The committee was divided on including this paragraph in the TS but extensive lobbying with the FAA could not change their mind about not excluding it in the TSO document. Nothing was ever certified under TSO c23e. It only was in effect from 10/31 to 12/04/08 and TS-135 was removed much more quickly from the PIA website. That's why e is under cancelled instead of Active Historical. b,c, and d are under active historical because there are current products being manufactured under this versions today(i.e. Vector III under TSO C23b, a 1949 standard, couldn't resist) The new Strong Tandem is certified under f and the new rig from Peregrine is being developed under f. These are the first items going through the process under f. I'm old for my age. Terry Urban D-8631 FAA DPRE Quote Share this post Link to post Share on other sites
GLIDEANGLE 1 #4 March 28, 2014 Thank you for your through answer! "G"??? Crap, I thought I had at least one half of a clue what was going on.... I guess I don't! Appearently, I have some reading to do! The choices we make have consequences, for us & for others! Quote Share this post Link to post Share on other sites
RiggerLee 61 #5 March 28, 2014 Now I'm confused. If F references TS-135 then what is this TSO c23G? and what standard does it reference? LeeLee lee@velocitysportswear.com www.velocitysportswear.com Quote Share this post Link to post Share on other sites
councilman24 37 #6 March 28, 2014 Whoops, I don't know my alphabet. I got it right in the first paragraph, f. I'll blame it on my 7 and 5 year old girls bugging me. And we have g on our mind because it's the next one. I'm old for my age. Terry Urban D-8631 FAA DPRE Quote Share this post Link to post Share on other sites
councilman24 37 #7 March 28, 2014 BTW the Civil Air Regulations are where a double throw zigzag shows up in civilian literature. It states in 15.3106 "... All zigzag sewing shall be done on a 2-stitch sewing machine."I'm old for my age. Terry Urban D-8631 FAA DPRE Quote Share this post Link to post Share on other sites
cjdskydiver 4 #8 March 28, 2014 councilman24 Nothing was ever certified under TSO c23e. It only was in effect from 10/31 to 12/04/08 and TS-135 was removed much more quickly from the PIA website. That's why e is under cancelled instead of Active Historical. b,c, and d are under active historical because there are current products being manufactured under this versions today(i.e. Vector III under TSO C23b, a 1949 standard, couldn't resist) Along with the Mirage... Quote Share this post Link to post Share on other sites
