Overview
EN ISO 16122-5:2020 - "Agricultural and forestry machines - Inspection of sprayers in use - Part 5: Aerial spray systems (ISO 16122-5:2020)" is a CEN-adopted ISO standard that sets out requirements, test methods and verification criteria for the inspection of aerial spray systems fitted to manned fixed‑wing and rotary aircraft used in agriculture, forestry, turf and vegetation-control (e.g., utility corridor vegetation). The standard focuses on environmental protection by minimizing the risk of off‑target contamination during use. It does not cover aircraft airworthiness, pilot licensing, or general aircraft safety/design.
Key topics and technical requirements
This part of ISO 16122 covers the condition and performance of aerial spraying equipment with emphasis on environmental risk and application quality. Major technical topics include:
- General inspection requirements (including static and dynamic leak tests)
- Sprayer tanks: openings, strainers, emptying and tank‑contents indicators, and agitation
- Hoses and lines: routing, bending/abrasion checks and integrity
- Spray boom: sectioning, nozzle orientation and mounting
- Nozzles and spray quality: flow rate, spray quality (drop size categories) and nozzle condition
- Filters and strainers: location, condition and effectiveness
- Measuring, control and regulation systems: pressure indicators, flow instruments, pressure‑adjusting devices and validation of instruments
- Pressure drop and flow control across systems
- Volume rate per area and distribution verification (deposition considerations)
- Safety and exposure: inspector protection during inspection (referencing general requirements from ISO 16122‑1)
- Inspection reporting: required information and record keeping
- Informative annexes (e.g., nozzle drop size resources and aerial deposition models)
Practical applications
EN ISO 16122-5:2020 is intended to:
- Ensure aerial spray equipment is in a condition to apply pesticides and other products accurately and with minimal environmental contamination
- Provide standardized test methods for inspectors to verify system performance and detect leaks, faulty components or calibration issues
- Support compliance with environmental and pesticide‑use regulations (it relates to EU Directive 2009/128/EC where cited)
Who uses this standard
- Agricultural and forestry sprayer inspectors and testing organizations
- Operators and maintainers of manned aerial spray systems
- Service workshops and equipment manufacturers for design validation and servicing procedures
- Regulatory bodies and advisors assessing environmental risk of aerial pesticide application
Related standards
- ISO 16122‑1 (general requirements for inspection of sprayers in use) - applied where appropriate
- Relevant national/regional aviation and pesticide‑use regulations (airworthiness, pilot/operator requirements are covered separately)
Keywords: EN ISO 16122-5:2020, aerial spray systems inspection, inspection of sprayers in use, agricultural and forestry machines, environmental protection.