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Birding in and around Windhoek Nature Travel Birding

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Rosy-faced Lovebird

Many people find it strange that I love my hometown of Windhoek so much. They say it is dry and drab, but I see it completely differently. It sits at 1700 metres above sea level (12th highest capital in the world) in the Khomas Highland plateau area between the Auas and Eros mountain ranges. It […]

via Birding in and around Windhoek — Nature Travel Birding

Four Tips for Late-Summer Flying

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Source: 4 Rules-Of-Thumb For Late-Summer Flying | Boldmethod

Rules-Of-Thumb For Late-Summer Flying; by Colin Cutter – 
Thanks to Boldmethod for sharing…
1) Calculating Civil Twilight
Summer days are getting shorter, but there’s still a lot of daylight left.
A good rule-of-thumb for calculating civil twilight is that it usually ends between 20-35 minutes after sunset. Tonight in Boulder, CO, sunset is at 8:05 PM, and civil twilight ends at 8:34 PM. That’s a difference of 29 minutes. Once twilight ends, you can start logging night flight time. But remember, you need to wait an hour after sunset to log night landings.

2) Takeoff roll increases about 10% for every additional 1,000 feet of density altitude
There’s no sign of the weather cooling down yet. And on hot days, you get high density altitude. For most normally-aspirated GA airplanes, you’ll add about 10% of takeoff roll for every 1,000′ of DA. For example, if your airport’s density altitude on a hot day is 3,200′ over field elevation, you’ll increase your takeoff roll by about 32% over an ISA day. So if you have a 1,500′ takeoff roll on an ISA day, you’ll increase that roll to almost 2,000′.

3) Stay a minimum of 5 miles from storms, and up to 20 miles if you can.
Flying closer than 5 miles from visible overhanging areas in storm clouds puts you at risk of flying through hail and severe turbulence. That’s not good for your plane, or your passengers. In some cases, aircraft have encountered hail, severe windshear, and severe turbulence up to 20 miles from storms. When in doubt, keep your distance.

GolfCharlie232

4) Add Half The Gust Factor On Windy Day Landings.
As we approach the end of summer, windy days increase across the US, because the jet stream starts moving south. When you’re dealing with a gusty day, the FAA recommends that you add half the gust factor to your final approach speed to give yourself safe padding from a stall. For example, if the winds are reported at 18 knots, gusting to 30 knots, it means you have a gust factor of 12 knots (30-18 = 12). So if you take half the gust factor, you get 6 knots (12/2 = 6).

Boldmethod

To apply that in an SR-22T, Cirrus recommends that you fly final at 80 knots. So on a day with a 12 knot gust factor, you’d add 6 knots to the published 80 knots, for a final approach speed of 86 knots. The same math works for any GA airplane’s final approach speed. Just add half the gust factor to your final approach speed.

Boldmethod

Thanks to Boldmethod for sharing. What other rules-of-thumb are you using? Tell us…
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Common Yellow Throat

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Thanks to TPJphoto.net for sharing…

Common Yellow Throat - click to enlarge

I’m pretty sure this is a Yellow Throat, but this is the first time I have photographed one. A very pretty bird.

via Common Yellow Throat — TPJphoto.net

Great Blue Heron

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Showing His Moves, Great Blue Heron - click to enlarge

These 4 photographs were taken while a juvenile Heron was testing flight skills. A second bird looks on and seems very interested. There are actually 3 young birds in this particular nest. The third was flying around overhead. At this point it was getting funny watching the bird dance around flapping, with a rapt audience. […]

via Showing His Moves, Great Blue Heron — TPJphoto.net

Just Love Flying

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Nice Quote.jpg

Flying along the beautiful “Smiling Coast”, in The Gambia West Africa, is simply fantastic and my special way of practicing Mindfulness as a thrill seeker.

Whenever you bring awareness to what you’re directly experiencing via your senses,… you’re being mindful…” JKZ

Madox Pictures 015.jpgMadox Pictures 003.jpg

Flying in The Gambia

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A very good way to practice “mindfulness”

Flying in The Gambia 1.jpg

“Just Love Flying”

Two Easy Rules of Thumb For Calculating a Three Degree Glide Slope

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Source: Two Easy Rules-of-Thumb For Calculating a Three-Degree Glide Slope | Boldmethod (Thanks to boldmethod for sharing and keeping us safe)

Two Easy Rules-of-Thumb For Calculating a Three-Degree Glide Slope

 Have you ever found yourself chasing the glideslope on an ILS approach? There’s an easier way to do it.Groundspeed has a significant effect on descent rate, and there’s a formula you can use to ballpark your feet per minute (FPM) descent, even before you get on glideslope.

One of the most important parts of instrument flying is getting ahead of the airplane. The following formulas are a great way to do just that. In many glass cockpit aircraft, wind vectors and ground track diamonds mean you’ll have a easily visible references to use. GPS groundspeed will make the following equations extremely easy to use…

primary1Boldmethod
Option 1: Multiply Your Groundspeed By 5

If you’re flying your aircraft on a roughly 3 degree glideslope, try multiplying your groundspeed by 5 to estimate your descent rate. The result will be a FPM value for descent that you should target. As you capture the glideslope, make adjustments as necessary.

gs x 5
Option 2: Divide Ground speed In Half, Add “0”

Divide your ground speed in half, add a zero to the end, and you’ll have an approximate FPM of descent. This is another easy way to target an initial descent rate for a 3-degree precision approach, or even a VFR descent into an airport.

divide in half

Both formulas leave you with the same result. Choosing which formula to use comes down to which mental math you’re more comfortable with.

How Wind Affects Descent Rate

A tailwind on final will result in a higher groundspeed, thus requiring a higher descent rate to maintain glideslope. The opposite is true for headwinds. Let’s take a look at a few examples:

Example 1: Headwind of 25 Knots, Final Approach Speed of 100 Knots Indicated Airspeed.

example1

Example 2: Tailwind of 25 Knots, Final Approach Speed of 100 Knots.

example 2
Useful For More Than Just ILS Approaches

Looking for a good way to plan out your 3 degree glideslope? These formulas are great references for LPV approaches, LNAV+V, or even long VFR straight in approaches.

primarygc232

Have you used these formulas before? Tell us how you use them in the comments below.

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