SW4 Landing distance

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HeadingAltitudeSpeed
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SW4 Landing distance

#1 Post by HeadingAltitudeSpeed » Fri Jan 12, 2018 10:16 am

A quick question from ATC to pilots. I'm looking for a normal landing distance for an SW4 under the following conditions:

IFR weather - Ceiling 500' and visibility 2 SM
ILS approach
Wind 30 degrees off center 10G15
Airport elevation 1000'

To be clear I would like to know the LDR (threshold to stopping point).

Thanks!
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NotDirty!
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Re: SW4 Landing distance

#2 Post by NotDirty! » Fri Jan 12, 2018 10:42 am

The performance charts need temperature and landing weight to get a more precise number, and then pilot technique will have some impact on actual real-world performance.

Based on ISA and at maximum landing weight, I get about 2750 feet. Ground roll is 78% of landing distance, or 2145 ft if this is accurate.

Don't forget that a 704 operator must be able to land in 70% of the LDA, which means you need 3929 feet of LDA to be legal.
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planett
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Re: SW4 Landing distance

#3 Post by planett » Fri Jan 12, 2018 8:41 pm

Also, it's possible in that weather with a long runway, the crew might keep 1/2 flap configuration to touchdown and use around 4000 feet.
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planett
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Re: SW4 Landing distance

#4 Post by planett » Fri Jan 12, 2018 8:42 pm

Also, it's possible in that weather with a long runway, the crew might keep 1/2 flap configuration to touchdown and use around 4000 feet.
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Black_Tusk
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Re: SW4 Landing distance

#5 Post by Black_Tusk » Sun Jan 14, 2018 8:30 pm

NotDirty! wrote:
Fri Jan 12, 2018 10:42 am


Don't forget that a 704 operator must be able to land in 70% of the LDA, which means you need 3929 feet of LDA to be legal.

Hmm, now I'm not really familiar with 704 operations but if this is the case then how can companies like Perimeter and Wasaya go in and out of northern Ontario strips? I can't recall exactly but many of those runways are between 3000-3500 feet and especially in winter when the CRFI is bad how would they legally fulfill this requirement?
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