What are the 5 segments of an instrument approach?

These segments are the:

• i. Arrival segment. The route followed from the en route phase of the flight to the initial approach fix.
• ii. Initial approach.
• iii. Intermediate approach.
• iv. Final approach.
• v. Missed approach procedure.

What are the 4 segments of an instrument approach?

An instrument approach may be divided into as many as four approach segments: initial, intermediate, final, and missed approach.

What is an IAP in aviation?

Instrument Approach Procedures, or IAPs for short, are established to provide the transition from the en-route structure to the terminal environment when operating under Instrument Flight Rules (IFR), and/or during Instrument Meteorological Conditions (IMC), to a point where a safe landing can be made.

Where can I find instrument approach procedures?

The instrument approach procedures are published in the AD section of the AIP. The arrival segment is described in the standard arrival (STAR) charts and the other segments are described in the instrument approach charts.

How many instrument approaches are there?

three categories
There are three categories of instrument approach procedures: precision approach (PA), approach with vertical guidance (APV), and non-precision approach (NPA).

What is difference between DA and MDA?

As the names suggest, DA is a decision point while MDA is the lowest altitude allowed without visuals. The difference between DA vs MDA is reflected in the regulations, Practical Test Standards (PTS, soon Airman Certification Standards) and TERPS.

How does an ILS work?

ILS works by using two radio signals, sent from transmitters at the airport and received and interpreted onboard the aircraft. One of these, known as the localizer, will guide the aircraft laterally; the other, known as the glideslope, vertically.

When can you start an instrument approach?

14 CFR Part 135, § 135.225 states that pilots may not begin an instrument approach unless the latest weather report indicates that the weather conditions are at or above the authorized IFR landing minimums for that procedure.

What is MDA for instrument approaches?

Minimum Descent Altitude According to the AIM, MDA is, “the lowest altitude expressed in [MSL] to which a descent is authorized…in execution of a standard instrument approach procedure, where no electronic glideslope is provided.” Sound confusing?