Safety

Key Updates in Electric Aircraft Battery Safety Regulations

Technical Safety Mandates

Certification Frameworks

Logistics & New Chemistries

Thermal No-Propagation DO311A Mandate

Advanced Venting & Containment

Predictive Health Monitoring (BMS)

A single-cell thermal runaway event must not propagate to adjacent cells.

Enhanced requirements for managing toxic off-gassing away from critical aircraft structures.

Shift from reactive safety to predictive "State of Health" monitoring requirements. Not mandatory

EASA MOC4 & MOC5 July '25

FAA Harmonization

Standardized Means of Compliance for VTOL Energy Storage Systems, replacing ad-hoc "issue papers."

Shifted toward aligning with EASA SCVTOL standards to streamline dual-certification paths.

Sodium-Ion Inclusion (IATA/ICAO) Introduction of specific UN codes (e.g. UN 3551) allows legal transport and testing of Na-Ion prototypes.

Mandatory 30% SoC Shipping Limit Strict enforcement for air transport of all lithium and sodium-based batteries to mitigate fire intensity.

Source: RTCA DO311A; UL 1487; EASA MOC SCVTO;, FAATSO C179b

In 2025, the regulatory standards in electric aviation matured significantly pivoting from a case by case approval to a more harmonised and unified regulations.

Extracted from the PDF; charts and images may read imperfectly.