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VVJM265 said:A 3.3% gradient is the nominal climb gradient required to keep you away from the minimal 1:40 (2.5%) Obstacle Obstruction Surface (OIS), even during a diverse departure, and is equal to 200’/NM [200’ / (6076’/NM) * 100% = 3.29%]. This is mentioned in Sec 5-2-5 of the AIM, in chapter 2 of the Instrument Procedures Handbook, and in the TERPS.
My question is where are you guys getting guys getting 1.6% from? I don’t even see it in FAR 23 or 25. Unless I missed something, these are the minimum requirements for twin engine airplanes:
FAR 23NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANESWould someone explain where does the 1.6% comes from? It would only equate to a 100’/NM gradient and certainly would not give any obstruction clearance. This is the first time I have heard of it and it doesn’t seem to make much sense.
23.65; Normal climb: 8.3%
23.66; Takeoff climb, one engine inop: as spec’d by the manufacture
23.67; Final climb, one engine inop: 1.5%
FAR 25 TRANSPORT CATEGORY AIRPLANES
25.119; Normal climb: 8.3%
25.121.b; 2nd segment climb, one engine inop: 2.4%
25.121.c; 3rd segment climb, one engine inop: 1.2%
Thanks,
VVJM265
be-400xpdriver said:2.4% is what the factory test pilots can do with perfect flying and a perfect brand new airplane. The faa figures you are not as good as test pilot (unless you work for xjt) and your plane is not in perfect shape. So they do a .8% subtraction for pilot technique and for the plane and come up with 1.6% net climb gradient
Wacopilot said:I'm about to start at NetJets and my airline flew to 123 airports.....and yes, we did have the numbers for all of them. You guys are dorks.....use your off time to golf, fish, or anything else that is normal. I sure hope this isn't the flightdeck conversation I get to look forward to..... RNObased, maybe you will be my instructor but since I flew an airplane bigger than yours, do I get to teach you??????
Awesome
Waco.
Wacopilot said:I'm just picking on RNOBased, his airplane weighed less than mine and I wanted to feel cool. So football.... now that I know something about.... and Jessica Simpson, yummy. Scott, are there really 123 nations? If so, wow!!! NJA is awesome.
Waco