21.A.801 Identification of products and control and monitoring units (CMUs)

• Regulation (EU) 2021/1088 found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)
• Regulation (EU) 2024/1108 found in: Initial Airworthiness and Environmental Protection (748/2012) (Nov 2025)

21.A.801 Identification of products Regulation (EU) 2021/1088 (a)     The identification of products shall include the following information: 1.       the manufacturer’s name; 2.       the product designation; 3.       the manufacturer’s serial number; 4.       the ‘EXEMPT’ mark in case of an engine, when the competent authority has granted an exemption from the environmental protection requirements; 5.       any other information the Agency finds appropriate. (b)     Any natural or legal person that manufactures an aircraft or engine under Subpart G or Subpart F shall identify that aircraft or engine by means of a fireproof plate that has the information specified in point (a) marked on it by etching, stamping, engraving, or other approved method of fireproof marking. The identification plate shall be secured in such a manner that it is accessible and legible, and will not likely be defaced or removed during normal service, or lost or destroyed in an accident. (c)      Any natural or legal person that manufactures a propeller, propeller blade, or propeller hub under Subpart G or Subpart F shall identify it by means of a plate, stamping, engraving, etching or other approved method of fireproof identification that is placed on it on a non-critical surface, contains the information specified in point (a), and will not likely be defaced or removed during normal service or lost or destroyed in an accident. (d)     For manned balloons, the identification plate prescribed in point (b) shall be secured to the balloon envelope and shall be located, if practicable, where it is legible to the operator when the balloon is inflated. In addition, the basket, load frame assembly and any heater assembly shall be permanently and legibly marked with the manufacturer's name, part number, or equivalent, and serial number, or equivalent. #### 21.A.801 Identification of products and control and monitoring units (CMUs) *Regulation (EU) 2024/1108* (a) The identification of products and CMUs produced under Subpart F or Subpart G shall include the following information: 1. the manufacturer’s name; 2. the product and CMU designation; 3. the manufacturer’s serial number; 4. the ‘EXEMPT’ mark for engines, when the competent authority has granted an exemption from the applicable environmental protection requirements; 5. any other information the Agency finds appropriate. (b) Any natural or legal person that manufactures an aircraft or engine under Subpart G or Subpart F shall identify that aircraft or engine by means of a fireproof plate that has the information specified in point (a) marked on it by etching, stamping, engraving, or other approved method of fireproof marking. The identification plate shall be secured in such a manner that it is accessible and legible, and will not likely be defaced or removed during normal service, or lost or destroyed in an accident. (c) Any natural or legal person that manufactures a propeller, propeller blade, or propeller hub under Subpart G or Subpart F shall identify it by means of a plate, stamping, engraving, etching or other approved method of fireproof identification that is placed on it on a non-critical surface, contains the information specified in point (a), and will not likely be defaced or removed during normal service or lost or destroyed in an accident. (d) For manned balloons, the identification plate prescribed in point (b) shall be secured to the balloon envelope and shall be located, if practicable, where it is legible to the operator when the balloon is inflated. In addition, the basket, load frame assembly and any heater assembly shall be permanently and legibly marked with the manufacturer's name, part number, or equivalent, and serial number, or equivalent. (e) Any natural or legal person that produces a CMU under Subpart G or Subpart F shall identify it by means of a plate, stamping, engraving, etching or other approved method of fireproof identification that contains the information specified in point (a) in such a manner that it is accessible and legible and will not likely be defaced or removed during normal service, or lost or destroyed in an accident.