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145.A.42 requires the organisation to establish procedures for the acceptance of components and materials to ensure that all items are in a satisfactory condition, properly documented with an authorised release certificate, and correctly identified before being fitted to an aircraft.
What it means in practice
Before any component is installed on an aircraft, the organisation must verify that it is eligible for fitment and is accompanied by the correct release documentation. For new parts, this is typically an EASA Form 1 or equivalent authorised release certificate. The organisation must inspect incoming components for damage, corrosion, or other defects, and confirm that shelf-life-limited items are within their permitted storage period.
The procedure must also cover standard parts, raw material, and consumables. These are accepted based on their conformity to recognised standards rather than an EASA Form 1. The organisation must verify that these items are properly identified, traceable, and from an approved or acceptable source.
Key requirements
Components must be accompanied by an EASA Form 1 or equivalent accepted release document. The organisation must verify the component's condition, documentation, and eligibility for the specific aircraft or task. Unserviceable components must be clearly identified and segregated to prevent inadvertent use. Components received from external sources must be inspected upon receipt and quarantined until accepted through the organisation's incoming inspection process.
Common compliance gaps
Incoming inspection procedures are a frequent audit focus. Common findings include accepting components without verifying the release certificate against the component identity, failing to check shelf life or modification status, and inadequate segregation between serviceable and unserviceable stores. Organisations also sometimes lack a clear process for dealing with components that arrive without proper documentation.
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