A/C-54a — Enhanced Airborne Collision Avoidance (ACAS)
Enhanced Airborne Collision Avoidance System with reduced RA thresholds, use of ADS-B horizontal information, extended hybrid surveillance, improved compatibility of non-ACAS aircraft with ACAS aircraft, improved compatibility with US ACAS Xa.
- Category
- SYSTEM
- Stakeholder
-
-
Airspace User
- Civil
- Civil Scheduled Aviation
- Civil Business Aviation-Fixed Wing
- Military
- Military Transport
-
Airspace User
- V3 End
- 11-12-2019
- V4 Start
- 31-12-2023
- V4 End
- 31-12-2025
- V5 Start
- 31-12-2025
- IOC
- 31-12-2025
- FOC
- 31-12-2035
Operational Improvement Steps
| Code | Title | Related Elements | |
|---|---|---|---|
|
10
|
CM-0808-a | Improved Collision Avoidance for commercial air transport in standard operations (ACAS Xa) |
   |
Dependent Enablers
| Relationship | Code | Title | Related Elements |
|---|---|---|---|
|
10
Has predecessor
|
A/C-21 | Coupling TCAS II RAs to the aircraft auto flight systems to enable accurate response to TCAS II RAs with display of cues for monitoring the avoidance manoeuvre |
 |
|
10
Has successor
|
A/C-54b | ACAS adaptation to new separation modes |
|
|
30
Enabling
|
A/C-54a0 | Extended Hybrid Surveillance |
|
|
30
Enabled by
|
STD-072 | ACAS Interoperability |
|
|
30
Enabled by
|
STD-073 | ACAS-Xa MOPS |
|
PCP Elements: No associated data
Stakeholders
| Code | Title | Related Elements |
|---|---|---|
| AU | Airspace User |
|
Standards: 
Implementation Objectives: 
Stakeholder Lines of Action (SLoAs): 
SESAR Workpackages: