AA.VI.E.R7
Risk managementContinuing to descend below the Decision Altitude (DA)/Decision Height (DH) when the required visual references are not visible.
From the FAA library
- Chapter 4: Approaches › Minimum Descent Altitude (MDA), Decision Altitude (DA), And Decision Height (DH)
Minimum Descent Altitude (MDA), Decision Altitude (DA), And Decision Height (DH) MDA—the lowest altitude, expressed in feet MSL, to which descent is authorized on final approach or during circle-to land maneuvering in execution of a standard instrument approach ... procedure (SIAP) where no electronic glideslope is provided. DA—a specified altitude in the precision approach at which a missed approach must be initiated if the required visual reference to continue the approach has not been established. DH—with respect…
- Pilot/Controller Glossary › D
Used by ATC. Areas of airspace that may be activated in response to unplanned falling debris in the NAS. DECISION ALTITUDE/DECISION HEIGHT [ICAO Annex 6]- A specified altitude or height (A/H) in the precision approach at which a missed approach ... must be initiated if the required visual reference to continue the approach has not been established. 1. Decision altitude (DA) is referenced to mean sea level and decision height (DH) is referenced to the threshold elevation. 2. Category…
- Chapter 3: Arrivals › Descending From the En Route Altitude
Descending From the En Route Altitude Making the transition from cruise flight to the beginning of an instrument approach procedure sometimes requires arriving at a given waypoint at an assigned altitude. When this requirement is prescribed by a published arrival ... restriction. Even when ATC allows a descent at the pilot’s discretion, aircrews need to choose a waypoint and altitude for positioning convenient to start the approach. In either case, descending from a cruising altitude to a given waypoint…
- Chapter 4: Approaches › Enhanced Flight Vision Systems (EFVS) and Instrument Approaches [Figure 4-10A]
Therefore, an EFVS cannot be used to satisfy the requirement that an identifiable part of the airport be distinctly visible to the pilot during a circling maneuver at or above MDA or while descending below MDA from a circling maneuver ... visual information provided by an EFVS serves as independent verification of the position information provided by the aircraft’s displays and systems. An EFVS also enables a pilot to assess the enhanced flight visibility and identify required visual references, helps…
- Chapter 10. Helicopter Operations › Section 1. Helicopter IFR Operations › 10-1-3. Helicopter Approach Procedures to VFR Heliports
These instrument procedures may be designed to guide the helicopter to a specific landing area (Proceed Visually) or to a point-in-space with a “Proceed VFR” segment. 1. An approach to a specific landing area. This type of approach ... missed approach point from which a landing can be accomplished with a maximum course change of 30 degrees. The visual segment from the MAP to the landing area is evaluated for obstacle hazards. These procedures are annotated: “PROCEED VISUALLY FROM…
- Glossary
Cross-check. The first fundamental skill of instrument flight, also known as “scan,” the continuous and logical observation of instruments for attitude and performance information. Cruise clearance. An ATC clearance issued to allow a pilot to conduct flight ... altitude from the minimum IFR altitude up to and including the altitude specified in the clearance. Also authorizes a pilot to proceed to and make an approach at the destination airport. Current induction. An electrical current being induced into…