tag:blogger.com,1999:blog-14001215.post2512674689667958092..comments2009-07-29T23:33:59.984-04:00DaveGhttp://www.blogger.com/profile/16015349658680998609noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-14001215.post-91878608542303365172009-07-29T23:33:59.984-04:002009-07-29T23:33:59.984-04:00For what it&#39;s worth, that French PTU is a 2-sided hydraulic pump that operates between the two hydraulic systems. The system with the greater hydraulic pressure operates the pump. If one engine fails, the hydraulic pressure from the operating engine powers the pump and pressurizes the inoperative side. They try to do the same thing when the engines are shut down at the gate. Makes it sound like the airplane is slowly dying.Tracyhttp://www.aroundthepattern.comnoreply@blogger.comtag:blogger.com,1999:blog-14001215.post-53498096054122467562009-07-29T21:28:21.264-04:002009-07-29T21:28:21.264-04:00assumptionsleonhttp://www.blogger.com/profile/02288771971363819090noreply@blogger.comtag:blogger.com,1999:blog-14001215.post-73779811408036856822009-07-29T21:27:14.392-04:002009-07-29T21:27:14.392-04:00the problem with assumetions....<br />http://en.wikipedia.org/wiki/Red_Angus<br />have a great week, i will be checking in every day and be with you in spirit at least.<br />leonleonhttp://www.blogger.com/profile/02288771971363819090noreply@blogger.com