Lesson 303 IFR Arrivals Flashcards
Front
Back
What is the terminal objective of Lesson 303 IFR Arrivals?
In a simulated environment control IFR arrivals in accordance with the BAC evaluation strategy.
What are the enabling objectives of Lesson 303 IFR Arrivals?
- Describe IFR approaches. 2. Describe types of approaches. 3. Integrate IFR arrivals into the control zone. 4. Operate and monitor ILS and VASISPAPI.
What does MATS stand for in the context of IFR arrivals?
MATS stands for the Manual of Air Traffic Services.
What is the difference between a Decision Altitude (DA) and Minimum Descent Altitude (MDA)?
DA is a specified altitude in the precision approach where a missed approach must be initiated if visual reference is not established. MDA is the altitude below which descent is not to be made unless the required visual reference is established.
Define ‘instrument approach procedure’ (IAP) as per MATS Tower Glossary.
A series of predetermined manoeuvres by reference to flight instruments with specified protection from obstacles from the initial approach fix to a point from which a landing can be completed.
What are the types of approaches in IFR procedures?
Structured approaches designated as Precision Approach and Non-Precision Approach.
What are the main components of an Instrument Landing System (ILS)?
- The localizer transmitter 2. The glide path transmitter 3. The approach light system.
What is the minimum visibility requirement for a CAT I ILS approach?
200 feet Decision Height (DH) and an RVR of 2600 feet or alternatively 12 statute miles ground visibility.
What is indicated by the term ‘MDA’ in non-precision approaches?
Minimum Descent Altitude - the altitude below which descent is not to be made until visual reference is established.
When must a pilot initiate a missed approach?
When adequate visual reference to the airport environment has not been established at the specified Decision Altitude.
What is the function of the approach light system in ILS?
It provides visual guidance to pilots during the final stages of their approach enhancing safety during landing.
What type of guidance does a Precision Approach provide?
A Precision Approach provides both lateral and vertical guidance.
Describe the profile view of an approach plate.
The profile view is a cross-section of the approach useful for understanding the method of descent including distances and altitudes.
What is the significance of the ‘minimum sector altitude’ on an approach plate?
It breaks down the Minimum Sector Altitude into quadrants to ensure safe navigation around obstacles.
What information is contained in the minima table on an approach plate for an ILS approach?
- Aircraft Category Minima 2. Straight-in Minima 3. Circling Minima 4. ILS Decision Altitude and Decision Height.
What does ‘CDA’ stand for and what does it represent?
Constant Descent Angle - it represents the angle at which the aircraft should ideally descend during the approach.
What is the location of the safe altitude ASL information on an approach plate?
It is generally found in a summary box detailing the safe altitude within 100 nautical miles.
What is described in the ‘Plan View’ of an approach chart?
The Plan View provides a scaled overhead perspective of the approach procedure showing the path and navigation aids.
What is indicated by the term ‘DA’ as it relates to Decision Altitude?
DA is referenced to mean sea level (MSL) for precision approaches.
How is the ‘procedure identification’ on an approach plate structured?
The first part indicates the primary navigation type required for final approach lateral guidance followed by the runway number.
What is the ‘marginalia’ in an approach plate?
The section that includes tower controller elements identification numbers and relevant procedural reference.
How are different ILS categories defined?
ILS categories are defined based on operational minima with CAT I allowing operations down to a minimum of 200 ft DH at 2600 ft RVR and CAT II and III having even lower DH and RVR requirements.
What is an ILS?
ILS stands for Instrument Landing System.
What is the typical angular width for LOC adjustments?
The LOC is adjusted to provide an angular width typically between 3 and 6 degrees depending on runway length.
Where is the transmitter antenna array located with respect to the runway?
The transmitter antenna array is located at the far end of the runway away from the approach.
What does CAP provide in terms of localizer data?
CAP provides an estimation of the range of the localizer data displayed like this EO 303.2.
What frequency range does a glide path transmitter operate within?
The glide path transmitter operates within the frequency range of 329.3 to 335 MHz.
How is the glide path frequency paired?
The frequency is paired with the associated LOC frequency in accordance with ICAO standards.
What is the typical approach angle for a glide path?
The glide path is adjusted to a published approach angle typically 3 degrees.
What is the beam width for the glide path?
The beam width of the glide path is 1.4 degrees.
How far is the glide path antenna array located from the approach end of the runway?
The antenna array is located approximately 1000 ft from the approach end of the runway and offset approximately 400 ft from the runway centerline.
What can negatively affect the beam-forming area in front of the glide path antenna?
Heavy snow buildup can negatively affect the beam-forming area in front of the glide path antenna.
What measures do airports take for heavy snow buildup near the glide path?
Airports have snow-clearing plans in effect for this area as the snow must remain below the allowable design depth for proper glide path operation.
What happens if there is excess snow in the vicinity of the glide path?
If there is excess snow in the vicinity of the glide path the glide path may not issue reliable signals and must be shut down.
What are low-power NDB transmitters sometimes located on the LOC?
Low-power NDB transmitters are sometimes located on the LOC 3.5 to 6 miles from the runway threshold.
What may be used instead of an NDB if installation is not possible?
If it is not possible to install an NDB a DME fix or RNAV fix may be used instead to form the FAF.
What is the function of the FAF?
The FAF provides a fix to which the pilot can navigate for the transition to the ILS.
What does some ILS have associated with them?
Some ILS may also have an associated DME.
What does DME provide at some locations in relation to ILS?
At some locations a DME paired with the ILS provides distance information to define the IAF and MAP.
What is VORDME used for?
VORDME which are available either on the airport or aligned with the appropriate runway will be used to provide distance information for the transition to the ILS.
What is the name of the primary approach at March?
The primary approach at March is the ILS Runway 09.
What is the frequency for the ILS Runway 09 approach?
The frequency for the ILS Runway 09 approach is 109.9.
At what altitude must all quadrants be maintained during the initial approach?
Minimum Sector Altitudes for all quadrants must be maintained at 2500 ASL 25NM.
What is the outbound track for ILS Runway 09?
The outbound track is 270 degrees.
What are the procedure turn headings for ILS Runway 09?
Left heading 225 then right heading 045 maintaining 2100 until intercepting the Intermediate approach.
What is the final approach inbound track for ILS Runway 09?
The final approach inbound track is 90 degrees or the Localizer.
What is the minimum altitude over the BODET BD Beacon?
The minimum altitude over the BODET BD Beacon is 1950 ASL.
What is the ILS Approach Decision Altitude (DA)?
The Decision Altitude (DA) for the ILS Approach is 950 ASL.
What is the MDA for the LOC with no glide path?
The MDA for LOC no glide path is 1077 ASL.
What is the ILS RVR for ground visibility?
The ILS RVR is 26.
What should ground visibility be if RVR is unavailable?
If RVR is unavailable ground visibility should be 12.
What is the missed approach procedure for ILS Runway 09?
The missed approach procedure is to climb to 2500 feet on a track of 90 degrees to ZRM NDB.
