What is the lightning bolt on an approach plate?

What is the lightning bolt on an approach plate?

A “lightning bolt,” or “zig-zags” centered amid an airway or a route indicates that the airway or route is not drawn to scale. A lightning bolt on the profile view of an instrument approach procedure (IAP) indicates a precision final approach fix (PFAF).

What is TCH approach plate?

Threshold Crossing Height (TCH): The theoretical height above the runway threshold at which the aircraft’s glide slope antenna would be if the aircraft maintains the trajectory established by the mean ILS glide slope or MLS glide path.

What is the V on an approach plate?

If the approach chart has one, what this means is you should not descend below the MDA prior to this point. To be specific, it’s the bold V circled on this chart from Telluride, Colorado.

What is the difference between DA and MDA?

Yet, decision altitude (DA) and minimum descent altitude (MDA) are very different concepts. As the names suggest, DA is a decision point while MDA is the lowest altitude allowed without visuals. Without required flight visibility and runway environment, 91.175 says we can’t go below MDA.

Where is the MDA on an approach plate?

To find MDA or DA, you’ll look to the Minimums section toward the bottom of the chart. Under the minimums, you will see different lines of minimums you can fly (this will depend on the type of equipment you have onboard) and whether they correspond to a Decision Altitude or a Minimum Descent Altitude.

What is a DOD flip?

Flight Information Publications and Flight Information Products (FLIP) are sensitive flight critical mapping and charting type items produced by the National Geospatial-Intelligence Agency (NGA), foreign governments and commercial vendors that are distributed by Defense Distribution Mapping and varied civilian …

What does VGSI and ILS glidepath not coincident mean?

It’s supposed to prevent overreacting or thinking that your equipment is out of tolerance. As for why they are not coincident: “Coincidence” is this case means within 0.2 degrees of glidepath OR within 3 feet of Threshold Crossing Height.

Where is MDA on approach plate?

Is MDA AGL or MSL?

All approach minimum altitudes, whether MDA or DA, are expressed in both MSL and AGL altitudes. As stated above, DA is read from the altimeter…it gives you the direct answer to “when do I reach minimum altitude?” in flight.

What does a lightning bolt on a shoe mean?

This symbol can be identified by using a bolt or a bolt through a hand, which lets people know that injury or death can occur from nearby high-voltage electrical equipment. If you see a lightning bolt on the bottom of a shoe, then you know that there is a danger of an explosion occurring from static electricity.

What is it called when lightning never strikes the same place?

Humans have deified lightning for millennia, and lightning-inspired expressions like “Bolt from the blue”, “Lightning never strikes twice (in the same place)” and “blitzkrieg” are in common usage.

What is an idiomatic expression derived from lightning?

Idiomatic expressions derived from lightning, such as the English expression “bolt from the blue”, are common across languages. The fear of lightning is called astraphobia .

What is the difference between positive lightning and negative lightning?

Positive and negative lightning. Large bolts of negative lightning can carry up to 120 kA and 350 coulombs. The average positive ground flash has roughly double the peak current of a typical negative flash, and can produce peak currents up to 400,000 amperes (400 kA) and charges of several hundred coulombs.