Non-Incidence / Accident Statement

Commonly referred to as the NIAS (Non incident or accident statement) or NIS (Non incident statement), this is a letter which acts as a statement that a component, part or aircraft has not been involved in an “accident” or “incident” during a noted time scale of operation and is issued by a CAMO (Continued Airworthiness Management Organisation) typically.

The letter will state typically the period of operation that it covers along then with the operator details or owner details making the statement.

The specifics for the item covered should also be noted. This will differ a little depending on what the statement is for; for example, an aircraft NIAS would note the Aircraft Registration, MSN (Manufacturers Serial Number), Total Airframe Hours & Cycles at the time of the statement along then with the PN (Part Number) or SN (Serial Number) for major components like the engines.

Note that the Engine Hours and Cycles would also be noted in this case – remember that the airframe and engine hours/cycles since new may not match as the engine may have been replaced or overhauled.

Additional paragraphs if the IATA guidance document is used will note that the aircraft or parts are free from additional considerations and have not been “subjected to severe stress or heat (such as in a major engine failure, accident, or fire) or has been submersed in salt water,” and “No part has been installed on the aircraft which was obtained from a military source or was previously fitted to a state aircraft as deemed by Article 3 of the Chicago Convention.”

The statement will also be signed and dated accordingly by an appropriately qualified individual.

Another query you might have is what is the definition of “Accident” or “Incident” – often the definition used is referenced from the ICAO document “Annex 13 To the Convention on International Civil Aviation Aircraft Accident and Incident Investigation” where definitions are set out at the beginning of the document.

The standard template for the NIAS letter often used is from IATA (International Air Transport Association) and is called the “Incident/Accident Clearance Statement”. It is accompanied with instructional guidance on how to use the form.

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