Stage 41 (Block 3 Study Guide) Flashcards
What is MVA
- Minimum Vectoring Altitude
- The lowest MSL altitude which IFR a/c can be vectored by ATC
- Provides obstacle clearance
What is MSA
- Minimum Safe Altitude (emergency use)
- Acceptable Navigation signal is NOT guaranteed
- Provides 1,000’ obstacle clearance, usually within a 25nm radius of the nav facility
Describe a Visual Approach. What are the weather requirements? What kind of separation/obstacle clearance is provided?
- ATC authorization for an IFR a/c to proceed VISUALLY to the airport (can be initiated by pilot or controller)
- NOT an IAP (no missed approach segment)
- Separation is provided, obstacle clearance is NOT
MUST HAVE:
1. 1000’ ceilings
2. 3sm vis
3. Remain clear of clouds
Describe a Contact Approach
- ATC authorization for an IFR a/c to DEVIATE from an IAP AND proceed visually to the airport (pilot requested)
- Separation is provided, obstacle clearance is NOT
MUST HAVE:
1. Reported ground vis of 1sm+
2. Clear of clouds
3. ATC Authorization
What is a Procedure Turn? What is the max speed a PT can be flown?
- A maneuver used to perform a COURSE REVERSAL to establish the a/c INBOUND on an intermediate/final approach course, usually within 10nm of the PT fix
- 200 knots
Why would an IAP need you to execute a PT?
- If an IAP does not allow for straight in approaches (unless the pilot is being radar vectored)
When are PTs NOT used?
- When a “radar vector” to the final approach course is provided
- When conducting a timed approach from a holding fix
- Indicated by “No PT”
What is the definition of a Non-Precision Approach?
- A standard instrument approach in which only HORIZONTAL guidance is provided
What is a Fly-by (FB) Waypoint? How is depicted on departure procedure charts?
- A waypoint that requires the use of turn anticipation to avoid overshooting the next flight segment
- A “North Star” (Circle with 4 points)
What is a Fly-over (FO) Waypoint? How is depicted on departure procedure charts?
- A waypoint that precludes any turn until the waypoint is overflown
- Followed by either an intercept maneuver of the next flight segment, or direct flight to the next waypoint
- A “North Star” within a CIRCLE (O for Over)
When would step down fixes be incorporated into an IAP?
- When they’re necessary to keep a/c within airspace boundaries and for obstacle clearance
What is VDP
- Visual Descent Point
- Non Precision Approaches ONLY
- Point at which you decide to continue landing, or prepare to go missed
How do you calculate the VDP if one is not provided?
Height above TDZE/300
What is MDA?
- Minimum Descent Altitude
- The lowest altitude (MSL) to which descent is authorized on final approach or circle-to-land maneuvering during a Non-Precision IAP
What is DA?
- A specified altitude in a PRECISION approach at which a missed approach must be initiated if the required visual reference to continue has not been established
What are the 4 reasons an airport would have a Circling-Only procedure?
- The approaches do NOT have straight in landing minimums
- Runway is not clearly defined on the airfield
- Final approach course alignment with runway centerline exceeds 30 degrees
- Descent gradient exceeds 400ft/NM (FAF to Threshold)