ISO 16119-5:2023

Overview

ISO 16119-5:2023 defines environmental requirements for aerial spray systems used in agriculture, forestry, turf and vegetation control. It covers design and verification for fixed‑wing and rotary (helicopter) aircraft spray systems with the aim of minimizing environmental contamination during normal use and foreseeable misuse. This part of the ISO 16119 series is intended to be used together with ISO 16119‑1:2013 (general requirements); where conflicts occur, ISO 16119‑5 takes precedence for machines in its scope. The standard excludes unmanned aerial vehicles (drones), pre‑existing sprayers manufactured before publication, and aircraft airworthiness or pilot licensing requirements.

Key topics and technical requirements

ISO 16119‑5:2023 addresses the main components and systems that affect environmental safety and contamination risk, including:

• Sprayer tanks: materials, openings, emptying, content indicators, agitation and filling‑pre‑mix provisions to reduce spillages and overfilling.
• Hoses and lines: construction and routing to avoid leaks and accidental release.
• Spray booms: design, location and adjustment requirements to control deposition patterns.
• Safety measures: design features that mitigate significant hazards identified through risk assessment.
• Filters, nozzles and atomizers: performance and maintenance considerations to ensure consistent spray quality.
• Measuring & test connections: provisions to connect test equipment and verify system performance.
• Volume/area adjustment systems: methods and verification for reliable application rates.
• Distribution and spray drift control: requirements for minimizing off‑target deposition, including swathe marking/mapping and GNSS integration.
• Cleaning and rinsing: onboard cleaning devices and water tank provisions to prevent contamination from residues.
• Documentation and markings: operator manuals, instructions and required markings for safe environmental operation.

Normative references cited include ISO 5681, ISO 5682 parts, ISO 9357, ISO 13440 and related test method standards used for verification.

Applications and users

ISO 16119‑5 is relevant to:

• Aircraft sprayer manufacturers designing fixed‑wing and rotary aerial application systems.
• Regulators and safety bodies setting environmental protection and machinery safety rules.
• Large‑scale applicators in agriculture, forestry, turf management and utility right‑of‑way vegetation control, especially where ground access is limited.
• Service organizations and maintenance providers responsible for calibration, testing and cleaning. This standard helps ensure consistent design practices that reduce environmental contamination risks during aerial application.

Related standards

• ISO 16119‑1:2013 (General requirements for sprayers)
• ISO 5681:2020, ISO 5682‑1/3/4 (nozzle and system test methods)
• ISO 4254 series (aircraft safety - not covered by ISO 16119‑5)

Keywords: ISO 16119‑5:2023, aerial spray systems standard, environmental requirements, sprayers, spray drift control, agricultural and forestry machinery.