Special Committee 245 (SC-245) focuses on reviewing and updating standards for Distance Measuring Equipment (DME) interrogators that were originally developed more than 40 years ago. The existing documents, DO-189, Minimum Operational Performance Standards for Airborne Distance Measuring Equipment (DME) Operating within the Radio Frequency Range of 960–1215 MHz, and ED-54, Minimum Operational Performance Requirements (MOPR) for Distance Measuring Equipment (DME) Interrogators (DME/N and DME/P) Operating within the Radio Frequency Range of 960–1215 MHz, were published in 1985 and 1987 respectively and require revisions to enhance performance, reflect technological advancements and to reach consensus on new requirements. These updates are also essential to ensure the continued safety, reliability, and resilience of DME in modern air navigation operations. SC-245 is collaborating with EUROCAE Working Group 134 (WG-134) to develop harmonized, technically equivalent Minimum Operational Performance Standards (MOPS) for DME interrogators.

For additional meeting summaries, please contact the Program Director: Mahesh Balakrishna