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SFS February Special #1
For the Month of February, start or continue flying IFR or get an IPC and get heavily discounted simulator, instructor and aircraft time. You get 2 hours of simulator time free of charge, 2 hours of ground/pre/post at 50% off and 1.5 hours in a 172, 182 or 177RG for 10% off.
Here's how it works:
Cessna 172N Regular: $447.50 Special: $223.75
Cessna 172S Regular: $470.00 Special: $244.00
Cessna 177RG Regular: $492.50 Special: $264.25
Cessna 182P Regular: $507.50 Special: $277.75
Note: For the IPC or instrument special, you must use the simulator time before flying in the airplane.
*Offer Expires: February 28, 2011
*Offer cannot be combined with any other promotion.
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SFS February Special #2
 Buy a 4 hour block of time in the Cessna 182P and receive the 5th hour free.
*Offer Expires: February 28, 2011
*Offer cannot be combined with any other promotion.
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Notes from Airplane Chief Instructor - Peter Swift
Continuing on from the previous Newsletters, the last airspeed to review is GS - Ground Speed. This is the actual speed the aircraft is travelling "over the ground" as in the time it takes to get from point A on the chart to point B divided by the distance between point A and point B. Let's look at an example; the distance from Harvey Field to Hoquiam (KHQM) via Bremerton (KPWT) and Olympia (KOLM) is 111 nm (as determined by SkyVector. go here http://skyvector.com/ to check it out). We start our stop watch when in level flight, at our cruise altitude over Bremerton. Over Olympia, we record the time it took to get to Olympia. In this example we will say it took 20 minutes. The distance is 32 miles, so using the formulae Speed = distance divided by time, we get 1.6. But speed is expressed as a distance travelled over 1 hour, in other words the 1.6 we calculated is 1.6 of an hour, so we need to multiply this number by 60 (60 minutes in one hour) and we get 96.
Take the same example but this time it took us 15 minutes to go the same distance. So now we travelled 2.13 of an hour which = 128 knots per hour.
Ground speed is directly affected by the wind direction and speed and especially on cross country flights, it is the single most important speed to calculate and be aware of. With the TAS (true airspeed) and GS (ground speed) known, you can quickly figure out a) wind direction and speed, b) am I on time per my flight plan, c) will I make it to my destination, d) do I need to divert for fuel, e) do I have sufficient fuel on board to make the legal reserves required? f) will I be late or early for the $100 dollar hamburger...!
While flying, note down your TAS and your GS. The difference between the numbers is the wind speed and direction.
Let's assume on our flight plan we stated that out TAS will be 110 knots. Based on this it should take us 17.5 minutes to get from Bremerton to Olympia. In the first example it actually took us 20 minutes with a ground speed of 96 knots. The difference between our calculated TAS and our actual GS is 14 knots slower then we planned, which means we have a 14 knot head wind component. We now need to update our flight plan with this number and recalculate our time of arrival, fuel quantity etc. In the other example given, with a GS calculation of 128 knots, we are travelling faster then computed, by 18 knots, so we have an 18 knot tailwind component.
The easiest way to compute ground speed (for those of us who do not have a GPS which will display GS for you) is to use the E6B. Just remember the outside dial is distance and speed and in the inner dial is time. Exactly as shown in the equation above, simply place the distance "on top" (the outer dial) and the time taken to travel this distance directly below it (the inner dial) then read GS at the Index arrow.
I trust the discussion we have had over the last few issues of the Newsletter has been of value and as always I look forward to your comments and flying with each of you where we will put these items into practice.
Blue Skies,
Peter Swift, Chief Instructor |
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Harvey Airfield Weather Station
We have just installed a miniature weather station which is accessible from the Snohomish Flying website. On the Web Cam page a link is provided below the webcam picture to the new weather station page. Please note that that the information presented on the weather station page is not FAA approved and therefore not to be used for flight planning purposes. |
FAA Charts
Are there FAA publications that you need for your upcoming flights? Sectionals, Terminal Area Charts, Instrument Enroute and Approach plates, etc. Please remember to purchase them from Snohomish Flying Service. |
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Congratulations SFS First Solo Students
Matt Engle & Tony Green (CFI)
Carolyn Thorne & Erik Lindberg (CFI)
Congratulations SFS Graduates
Greg Martz ~ Private Airplane
SFS New Enrollees
Gabhan Berry ~ Instrument Airplane
Tobias Caouette ~ Private Helicopter
Welcome Harvey Field Tenants
Catherine Soto
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Your friendly staff at
Snohomish Flying Service, Harvey Field and
Skydive Snohomish |
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"IFR Departures in Mountainous
Terrain" GUEST SPEAKER:
Bob Graham - Retired Air Traffic Controller
DATE & TIME:
February 12th, 10:30 AM
SPONSORED BY:
LOCATION:
HARVEY FIELD
9900 Airport Way
Snohomish, WA 98296
(360) 568-1541 |
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HANGAR 15 FOR RENT
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Conferences
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Meetings
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Weddings
INFORMATION 360-568-1541 Extension: 260 Ask for Cyndy |
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