RTCA DO-311A-2017 PDF

Full title and description

RTCA DO-311A, Revision A (2017) — Minimum Operational Performance Standards for Rechargeable Lithium Batteries and Battery Systems. Provides design, analysis, testing and installation guidance for rechargeable lithium battery cells, batteries and battery systems that are permanently installed on aircraft (including rechargeable batteries contained within portable electronic devices when those devices are part of the aircraft type design).

Abstract

DO-311A defines minimum operational performance standards (MOPS) and required test methods to demonstrate safe performance of rechargeable lithium batteries and battery systems when used as permanently installed equipment on aircraft. The document addresses failure modes and abusive conditions (for example overcharge, short circuit, mechanical abuse and thermal events), thermal runaway mitigation and containment, electrical protection, installation and operational considerations, and documentation needed to support certification and installation. The standard does not mandate cell-level aging characterization and allows use of complementary standards for cell-level testing.

General information

• Status: Current (DO-311A, Revision A).
• Publication date: 19 December 2017.
• Publisher: RTCA, Inc. (prepared by Special Committee SC‑225).
• ICS / categories: Aerospace engineering; Avionics; Aircraft systems; Batteries and energy storage; RTCA standards (SC‑225).
• Edition / version: Revision A (DO-311A), 2017.
• Number of pages: 94 pages.

Scope

Applies to rechargeable lithium cells, batteries and battery systems that are permanently installed as part of an aircraft type design (including rechargeable batteries inside PEDs that are part of the type design). Excludes primary (non-rechargeable) lithium batteries and portable consumer PEDs that are not part of the type design. The standard focuses on system‑level performance, installation, and operational safety rather than mandatory cell‑level aging characterization; it provides pass/fail and characterization tests to demonstrate acceptable behavior under normal, fault and abusive conditions.

Key topics and requirements

• Design guidance for rechargeable lithium battery systems including electrical protection, charging control and monitoring.
• Performance and abuse testing: overcharge, external and internal short circuit (with protection enabled/disabled), forced discharge and electrical abuse.
• Thermal events: requirements and methods for thermal runaway mitigation, propagation testing and containment/venting provisions.
• Environmental and mechanical qualification: vibration, shock, thermal shock and altitude/pressure considerations for aircraft installations.
• Installation and interface requirements: mounting, ventilation/venting paths, isolation from other equipment, wiring and connectors.
• Operational considerations: duty cycles, charging procedures, maintenance and monitoring (state-of-charge/health reporting where applicable).
• Data, documentation and test reporting: test plans, test reports, configuration and limitations required for certification and continued airworthiness.
• Defines applicability thresholds and when complementary standards (UN transport tests, IEC/UL cell standards, RTCA DO-347) should be used.

Typical use and users

Used by aircraft OEMs, battery and battery‑system manufacturers, avionics and system integrators, test laboratories, certification applicants and regulatory authorities for design verification, certification support and installation approval of rechargeable lithium battery systems in fixed‑wing, rotary and emerging electric VTOL aircraft.

Related standards

Commonly referenced/paired documents include RTCA DO-347 (Certification Test Guidance for Small and Medium‑Sized Rechargeable Lithium Batteries and Battery Systems), RTCA DO-227A (non‑rechargeable lithium battery MOPS), RTCA DO-160 (environmental testing), relevant FAA advisory circulars on rechargeable battery installation (for means-of-compliance), UN Manual of Tests and Criteria (UN 38.3) for transport, IEC/UL cell and battery safety standards, and SAE/EASA guidance documents on aerospace battery design and certification.

Keywords

DO-311A; rechargeable lithium battery; battery system; thermal runaway; containment; avionics; aircraft installation; battery testing; RTCA SC-225; MOPS; certification.

FAQ

Q: What is this standard?

A: RTCA DO-311A (Revision A, 2017) is a Minimum Operational Performance Standard that sets system-level design, test and installation requirements for rechargeable lithium batteries and battery systems permanently installed on aircraft.

Q: What does it cover?

A: It covers design and protection strategies, required performance and abuse tests (overcharge, short-circuit, thermal events, mechanical and environmental qualification), installation and operational guidance, and the documentation/test evidence needed to support certification of installed rechargeable lithium battery systems.

Q: Who typically uses it?

A: Battery/system manufacturers, aircraft OEMs, integrators, test labs and certification applicants and authorities use DO-311A to demonstrate and assess the safety and airworthiness of installed rechargeable lithium battery systems.

Q: Is it current or superseded?

A: DO-311A (Revision A) was published 19 December 2017 and is the currently used revision for DO-311 as of this summary; no later revision (for example a DO-311B) is widely published or recognized as superseding DO-311A.

Q: Is it part of a series?

A: Yes — DO-311A is part of RTCA’s family of battery and avionics standards and is commonly used alongside DO-347 (certification test guidance), DO-227A (non‑rechargeable batteries), DO-160 (environmental), and other airworthiness guidance documents and industry standards (UN 38.3, IEC/UL, SAE) used in aerospace battery certification.

Q: What are the key keywords?

A: Rechargeable lithium, battery system, thermal runaway, containment, overcharge, short circuit, aircraft installation, DO-311A, MOPS, RTCA.