Noise Abatement Take Off Procedures
#1
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Joined APC: Jun 2008
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Noise Abatement Take Off Procedures
Hi guys,
It's been over a decade but I remember a company made departure procedure for a westwind out of KSMO that I never felt comfortable with and refused to do. Someone pointed out the safety implications but I forget the main reason for not doing it had to do with bringing power back to 80% N1. I think that was below single engine power to maintain altitude but forget.
The procedure was for 20 degrees flaps then at 400 ft bring the power back to 80% until over the beach and past the noise sensors.
Could anyone please comment on the safety ramifications as well as the legal ones you are breaking when following this procedure. It was for Part 91 ops.
Thanks in advance. I was just going over things I had done in the past and cannot for the life of me remember what the correct response is to this situation.
It's been over a decade but I remember a company made departure procedure for a westwind out of KSMO that I never felt comfortable with and refused to do. Someone pointed out the safety implications but I forget the main reason for not doing it had to do with bringing power back to 80% N1. I think that was below single engine power to maintain altitude but forget.
The procedure was for 20 degrees flaps then at 400 ft bring the power back to 80% until over the beach and past the noise sensors.
Could anyone please comment on the safety ramifications as well as the legal ones you are breaking when following this procedure. It was for Part 91 ops.
Thanks in advance. I was just going over things I had done in the past and cannot for the life of me remember what the correct response is to this situation.
#2
I believe that as long as you're above 400 feet you're OK.
Excerpt from Part 25...(part 23 says the same)
"The airplane configuration may not be changed, except for gear retraction and automatic propeller feathering, and no change in power or thrust that requires action by the pilot may be made until the airplane is 400 feet above the takeoff surface"
That help?
Excerpt from Part 25...(part 23 says the same)
"The airplane configuration may not be changed, except for gear retraction and automatic propeller feathering, and no change in power or thrust that requires action by the pilot may be made until the airplane is 400 feet above the takeoff surface"
That help?
#3
Airlines do the same thing, we have a similar procedure for SNA. As long as you have airspeed and altitude, a power reduction is not that big a deal if the only terrain in front of you is the pacific ocean.
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