As per the 2008.4 version of the NASA CCR's:
29.0 Appendix D15.17.8 Head and Neck Restraint
Use of a head and neck restraint system or device carrying an SFI 38.1 certification is mandatory for all drivers as of June 2, 2008. References and information can be found in “Appendix D,” section #29.0 of the CCR.
This was copy released within the past day or so, as I DL'd the 2007.26 version on Friday.29.1 Head and Neck Restraint Systems
29.1.1 General
There is an up to date list of devices that are SFI 38.1 certified located here: http://www.sfifoundation.com/manuf.html#38.1. If the device is not on this list it will not fulfill the use mandate.
29.1.2 Installation and Replacement
Any systems used MUST be installed and used according to the manufacturers directions. The driver is ultimately responsible for the proper installation and use of these devices. It should be noted that “webbing based” systems should be replaced at least every three years or sooner if the manufacturer specifies such. Any device that shows signs of wear or abrasions should be sent back to the manufacturer for repair or should be replaced. “Homemade” repairs are not allowed.
As a rule of thumb.....ALL competitors should DL the CCR's at least once a month throughout the season. I've seen changes put out by NASA National without any announcement, and being caught off guard.
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