At 11:30 PM 24/08/04 +1000, you wrote: Australia has chosen 10,000' as the limit, the US uses 10,000, yet they allow up to 30 minutes >without oxy up to 12,000' (See http://www.risingup.com/fars/info/part135-89-FAR.shtml).
Patrick, You are quoting Part 135 which is the air transport regs. Part 91 is private ops and for the oxygen requirements see Sec 91.211 Sec. 91.211 - Supplemental oxygen. (a) General. No person may operate a civil aircraft of U.S. registry -- (1) At cabin pressure altitudes above 12,500 feet (MSL) up to and including 14,000 feet (MSL) unless the required minimum flight crew is provided with and uses supplemental oxygen for that part of the flight at those altitudes that is of more than 30 minutes duration; (2) At cabin pressure altitudes above 14,000 feet (MSL) unless the required minimum flight crew is provided with and uses supplemental oxygen during the entire flight time at those altitudes; and (3) At cabin pressure altitudes above 15,000 feet (MSL) unless each occupant of the aircraft is provided with supplemental oxygen. Thanks for the neat link to the FARs Mike Borgelt Instruments - manufacturers of quality soaring instruments phone Int'l + 61 746 355784 fax Int'l + 61 746 358796 cellphone Int'l + 61 428 355784 Int'l + 61 429 355784 email: [EMAIL PROTECTED] website: www.borgeltinstruments.com _______________________________________________ Aus-soaring mailing list [EMAIL PROTECTED] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring