PPRuNe Forums - View Single Post - 2.4% regulatory climb gradient for single engine
Old 31st July 2012 | 14:42
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aterpster
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From: On the Beach
For many years the FAA would not permit commercial operators to make IFR takeoffs on Runway 18 at South Lake Tahoe, California. (KTVL). A few years ago a different "performance" decision was made by the FAA. Below are today's takeoff minimums and ODP (obstacle departure procedure) for KTVL.

The takeoff minimums notwithstanding, a compliant takeoff flight path analysis is weather independent. I wonder how even the best takeoff performance engineering company could provide a safe takeoff flight path for this runway. The splays recommended in AC 120-91 would limit payload considerably more than application of the minimum requirements of FAR 121.189. But, a minimum 121.189 path would likely result in a OEI CFIT crash. Or does the modern performance engineer provide an RNAV track that is somewhere between the minimum requirements of 121.189 and the splays of AC 120-91. And, even applying the splays of AC 120-91 is containment assured without positive course guidance out of this canyon?


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