Benefits of Stabilized Approaches
The safety benefits of
stabilized final approaches, both nonprecision and precision (fig.
A), have been recognized for years. The Global Positioning System
makes stabilized approaches possible at many airports around the
world. NPS, IAN, and GLS all take advantage of this technology to
provide consistent, intuitive displays and associated procedures
that support stabilized approaches.
The following excerpt
(source: The Boeing Company, copyright 1997) is from Controlled
Flight Into Terrain Education and Training Aid, section 3:
Unstable approaches contribute
to many incidents/accidents. Pilots should establish a stabilized
approach profile for all instrument and visual approaches. A stabilized
approach has the following characteristics:
- A constant
rate of descent along an approximate 3-deg approach path that
intersects the landing runway approximately 1,000 ft beyond the
approach end and begins not later than the final approach fix
or equivalent position.
- Flight from an established
height above touchdown should be in a landing configuration with
appropriate and stable airspeed, power setting, trim, and constant
rate of descent and on the defined descent profile.
- Normally, a stabilized
approach configuration should be achieved no later than 1,000
ft AGL in IMC. However, in all cases if a stabilized approach
is not achieved by 500 ft AGL, an immediate missed approach shall