ASTM WK95242
New Specification for Cooperative Detect and Avoid System Requirements
1. Scope
1. If needed for this ConOps (due to differences from F3442), create a process for defining performance based risk based distance standoffs (ex: LoWC and MACproxy, Well Clear, NMAC, etc). 2. Define risk criteria for certain categories of operational risks (example: low, medium and high) based on outputs from the Air Risk ORA standard, and which may be different from the risk ratios in F3442/F3442M. 3. Define required levels of reliability appropriate for the risk of the operation. 4. Define commonly used aviation cooperative transponders (ex: ADS-B, UAT, FLARM) and account for their performance (ex: latency). 5. Define validation requirements for each level of performance and reliability in assessing the system. a. Hardware testing b. Simulation requirements c. Flight test requirementsKeywords
DAA, Collision Avoidance, Performance-Based, ADS-B, Well Clear, NMACRationale
The existing ASTM DAA Standard (F3442/F3442M) addresses broad DAA requirements for operations in low and medium risk airspaces, and encompasses many different use cases, technologies and risk profiles through the application of UAS-specific risk formulas. F3442/F3442M also requires detection and avoidance of non-cooperative aircraft. However, to date multiple operators have successfully secured broad-based FAA operational approval for their DAA systems using proven risk assessment and compliance approaches adopted from traditional aviation. These approaches diverge substantially from those used in F3442/F3442M, and to date they have demonstrated: a. Successful completion of multiple FAA Safety Risk Management Reviews; b. Compliance with the risk criteria of FAA Order 8040.6A Safety Risk Management, Appendix C; c. Continued approval for BVLOS operations without the use of visual observers; and d. Meeting or exceeding all FAA operational safety requirements since their approval. These highly automated approaches in cooperative airspaces take a different approach from F3442/F3442M and this standard will address their concept of operations and performance requirements.
Work Item Status
Date Initiated: 06-10-2025
Technical Contact: Dallas Brooks
Item: 000
Ballot:
Status: