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iPad navigation app buyer’s guide

By Bret Koebbe The landscape for full-featured EFB apps continues to evolve rapidly as developers push the limits of the iPad's capability with exciting new features. This chart represents the latest comparison of...


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Military Flight Bag FLIP script discontinued

By ForeFlight

We are ending support for the legacy Military Flight Bag (MFB) FLIP script. This script, introduced in January 2013, will no longer be updated and may not be compatible with any future changes to the FLIP DVD format.

We encourage our military and government customers to upgrade to the current version of ForeFlight's Military Flight Bag (MFB). ForeFlight MFB supports global flight operations by providing a worldwide geo-referenced library of Department of Defense approach plates, airport diagrams, and chart coverage, all fully integrated with the ForeFlight Mobile Pro app. Pilots can overlay the geo-referenced procedures and diagrams onto global IFR enroute charts and other base maps for a seamless moving map view of own ship position along with hazard and weather information. We have recently expanded MFB to include full FLIP publications, including AQP pages and GIANT reports.

Learn more about ForeFlight Military Flight Bag at

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Forecasting for the Terminal Area is Incredibly Difficult

By Scott Dennstaedt

FSM-TAF

Perhaps the most difficult forecast any meteorologist has to issue is a Terminal Aerodrome Forecast or TAF. The terminal area is quite small; it is officially defined as “the area within five statute miles of the center of an airport's runway complex.” Do you remember the world globe you used in grade school? Well, imagine placing a single dot on that globe with a sharp pencil – that's about the size of the terminal area. Consequently, forecasters consider a TAF a point forecast.

Let's take a look at a specific example. Below is a TAF for Fort Smith Regional Airport (KFSM) issued at 1736 UTC – well before any thunderstorms had formed. Notice the forecaster believes that moderate rain and thunderstorms will temporarily impact the Fort Smith terminal area between 0000 and 0300 UTC (8 p.m. to 11 p.m. EDT).

If you had also looked at the ForeFlight MOS forecast below for a similar timeframe, you would have seen a much different forecast. In fact, MOS did not forecast any thunderstorms or precipitation from 1900 to 0200 UTC (3 p.m. to 10 p.m. EDT). Instead, MOS predicted some gusty southwest winds with good visibility and a high scattered cloud deck. Which one provides the best guidance?

Actually, both! As it turned out thunderstorms did roll through the terminal area as predicted by the TAF a little bit after 0000 UTC as shown in the METARs below. However, the total amount of precipitation measured in the Fort Smith rain bucket for the event was a meager 3/100 of an inch. So the primary thunderstorm cell passed through the northern edge of the terminal area with the sun low in the horizon beaming in from the west (notice CLR skies were also reported).

KFSM 250353Z 28005KT 10SM CLR 18/14 A2992 RMK AO2 SLP127  

KFSM 250253Z 27007KT 10SM CLR 19/15 A2990 RMK AO2 SLP122

KFSM 250153Z 26010KT 10SM SCT050 22/15 A2986 RMK AO2 RAE19 TSE33 P0003

KFSM 250139Z 28008KT 10SM FEW038 BKN050 21/16 A2986 RMK AO2 RAE19 TSE33 P0003

KFSM 250053Z 21012KT 10SM -TSRA CLR 24/14 A2982 RMK AO2 RAB49 TSB02 SLP093 LTG ICCC P0000 

KFSM 250008Z 21013KT 10SM TS CLR 26/13 A2980 RMK AO2 TSB02 LTG ICCC 

KFSM 242353Z 21016G21KT 10SM CLR 26/13 A2979 RMK AO2 

KFSM 242253Z 22019G26KT 10SM BKN065 27/12 A2979 RMK AO2

Fort Smith was on the southern-most edge of a fairly broken line of thunderstorms as shown on the ForeFlight Map view below. This line of storms quickly moved in from the west along and ahead of a surface cold front. As you can see below, there was one small cell that moved through the Fort Smith terminal area approximated by the small red circle. It's this cell that triggered the thunderstorm observation at 0008 UTC.

FSM-Radar

So it's easy to see that Fort Smith could have been in that large gap to the northeast creating a situation more representative of the MOS forecast. The forecaster took a little meteorological risk and felt there was a fairly reasonable chance this line of thunder would evolve and impact the Fort Smith terminal area; a gutsy move given how this line of storms ultimately evolved.

MOS, on the other hand, wasn't as certain about the possibility of thunderstorms passing through the terminal area; it was leaning towards a forecast more representative of the weather within the gap. This is a good example of the “edge effect” that happens quite often when issuing such a point forecast. Ten miles can make a huge difference in making a good forecast or getting it wrong.


Read more here:: Forecasting for the Terminal Area is Incredibly Difficult

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Bolen Refutes The Washington Post’s Misrepresentation of Business Aviation

On March 16, The Washington Post ran a blog item titled, "The perks of private flying," which offered a distortion of those who use business aviation and why. NBAA President and CEO Ed Bolen presented a realistic view of business aviation in a letter to the editor published on the newspaper's website on March 25.

Read more here:: Bolen Refutes The Washington Post's Misrepresentation of Business Aviation

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ABACE Report: ABACE2015 Only Weeks Away: Don’t Miss Asia’s Foremost Business Aviation Event

Read more here:: ABACE Report: ABACE2015 Only Weeks Away: Don't Miss Asia's Foremost Business Aviation Event

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Accessing Content

We're currently experiencing technical difficulties with our website. We apologies to our subscribers for any inconvenience this may cause whilst we work to resolve the issue.

Aviation Week Intelligence Network subscribers should contact their representative for further assistance.

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NBAA Warns Local Officials About Legal Obligations Regarding Santa Monica Airport

NBAA cautioned the mayor and city council of Santa Monica, CA about the questionable legality of proposals that seek to limit the viability of Santa Monica Airport for aviation operations, as well as for businesses located on the airfield.

Read more here:: NBAA Warns Local Officials About Legal Obligations Regarding Santa Monica Airport

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ForeFlight moves beyond DUATS

By Bret Koebbe ForeFlight has gone one step further in its transition away from DUATS services by integrating a new Lockheed Martin route tool for improved flight planning. They're also recommending pilots...


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Read more here:: ForeFlight moves beyond DUATS

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ForeFlight moves beyond DUATS

By Bret Koebbe ForeFlight has gone one step further in its transition away from DUATS services by integrating a new Lockheed Martin route tool for improved flight planning. They're also recommending pilots...


...

Read more here:: ForeFlight moves beyond DUATS

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Cessna Citation CJ1+

Third-generation CitationJet offers more performance

Strap into a CJ1+ and you'll feel as comfortable as when you slip on your favorite shoes. The third-generation CitationJet, built from mid-2005 to late 2010, has FADEC-equipped engines with slightly more thrust, increased operating weights and an upgraded interior compared to the CJ1. It also has a completely integrated Rockwell Collins Pro Line 21 avionics package, including full-feature FMS-3000, and more standard equipment.

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Read more here:: Cessna Citation CJ1+

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