6.1 General
6.1.1 Definition
Instrument approaches enable aircraft to descend and align with the runway using ground-based or satellite-based navigation systems.
The Approach Controller shall position aircraft to ensure safe and efficient execution of instrument approaches.
6.1.2 Controller Responsibilities
The Approach Controller shall:
- Position aircraft for the appropriate instrument approach
- Ensure correct spacing between aircraft
- Issue approach clearance when conditions permit
- Deliver aircraft in a stable and predictable manner
Approach clearance shall only be issued when separation and sequencing are assured.
6.1.3 Key Objectives
The Approach Controller shall:
- Establish aircraft on final approach
- Maintain separation at all times
- Ensure stable approach profiles
- Support continuous and efficient traffic flow
6.1.4 Stabilised Approach Concept
The Approach Controller shall ensure that aircraft are delivered in a condition suitable for a stabilised approach.
A stabilised approach requires that the aircraft is:
- Correctly aligned with the runway or final approach track
- At an appropriate speed
- Established on a continuous descent profile
6.1.5 Controller Application
The Approach Controller shall:
- Avoid late vectoring or excessive manoeuvring
- Ensure appropriate intercept angles and spacing
- Prevent compression of traffic on final
- Take early corrective action if stability is compromised
Where a stable approach cannot be achieved, a go-around shall be expected or instructed.
6.1.6 Key Principle
Instrument approach control is based on stability and predictability.
The Approach Controller shall:
- Plan ahead
- Deliver stable approaches
- Maintain separation
Unstable approaches increase workload and risk and shall be avoided.