GRIMASSE - SAR User Needs Questionnaire
General Aviation (GA) today lacks an appropriate Cospas-Sarsat (C/S) solution for alert message transmission in case of distress. Neither the Personal Locator Beacon, nor the existing aeronautical Emergency Locator Transmitters are fully suitable for the needs of GA pilots and SAR services. PLBs are complicated to activate in case of distress (they, in particular, suppose that the pilot is conscious) and ELTs are not transportable, activate only manually or on crash detection when most of the time the transmission system does may not survive the crash. In addition, registration and information collection management should also be improved in the meanwhile to better help RCCs complete their tasks. It is then crucial to make sure that an appropriate solution is developed for General Aviation, which would improve the survival rate of pilots and passengers, based on the combination of advantages of ELTs (aircraft external antenna, and possibility to introduce automated in-flight activation) and PLBs (portability, cost).

Based on these elements, the European Horizon 2020 project GRIMASSE (, as follow up of GRICAS (, believes that the Galileo SAR service as part of the C/S MEOSAR system can contribute to a significantly improved flight safety and proposes to develop:

- a complete operational concept and an associated demonstrator of a GA C/S distress beacon, designed to specifically cover the needs of GA Search & Rescue operation chain stakeholders (pilots, aircraft operators, RCC operators)

- the operational concept and a demonstrator of a highly automatized SAR communications management system based on the ICAO’s System Wide Information Management (SWIM, SESAR in Europe) services architecture for SAR operation actors. This new system shall contribute to improve the response times and increase the survival rate of GA users.

The below questionnaire, which should take you up to 10 to 15 minutes to complete, aims at collecting and understanding your needs. With your input, we will be in position to define an adapted solution for General Aviation and make sure of its dissemination to the SAR authorities as well as aeronautical authorities.

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