SC-231, Terrain Awareness Warning System (TAWS), was reactivated by the Program Management Committee (PMC) meeting at the March 2019 meeting. NTSB Safety Recommendations A-17-035 and A-18-015 detail accidents in which aircraft flew with terrain clearances between 500 and 700 feet and crashed into mountainous terrain. The pilots manually inhibited the Class B/C TAWS in both accidents to avoid unwanted aural alerts. SC-231 will review this material along with recommendations from the GAJSC WG and propose solutions.


Co-Chair Yasuo Ishihara Honeywell International, Inc.
Co-Chair Rick Ridenour ACSS
Government Authorized Representative Charisse Green Federal Aviation Administration
Secretary Zach Reynolds ACSS
Program Director Rebecca Morrison RTCA, Inc.

 General Information

Terms of Reference June 27, 2019
Next Meeting Agenda September 24-25, 2019
2019 Meetings May 14-15, 2019
September 24-25, 2019


Completed Documents

DO-367 Minimum Operational Performance Standards (MOPS) for Terrain Awareness and Warning Systems (TAWS) Airborne Equipment May 2017



2016 Meetings February 9, 2016
June 7, 2016
September 20, 2016
November 7-9, 2016
December 8, 2016
2015 Meetings January 6, 2015
March 24, 2015
June 9-11, 2015
September 22-24, 2015
December 8-10, 2015
2014 Meetings May 28, 2014
September 30, 2014


For additional meeting summaries, please contact the Program Director: Rebecca Morrison