EXHIBIT 32.1

           Certification Pursuant To 8 U.S.C. Section 1350, As Adopted
            Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002


        In connection with the quarterly report of Motient Corporation, a
Delaware corporation (the "Company"), on Form 10-Q for the period
endingSeptember 30, 2003, as filed with the Securities and Exchange Commission
on the date hereof (the "Report"), I, Christopher W. Downie, Executive Vice
President, Chief Operating Officer and Treasurer of the Company, certify, in my
capacity as principal executive officer, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my
knowledge and based on my review of the Report:

     1.   the Report fully complies with the requirements of Section 13(a) or
          15(d) of the Securities Exchange Act of 1934; and

     2.   the information contained in the Report fairly presents, in all
          material respects, the financial condition and result of operations of
          the Company.



                                    /s/ Christopher W. Downie
                                    ------------------------------------------
                                    Executive Vice President, Chief Operating
                                    Officer and Treasurer (principal executive
                                    officer)

                                    June 7, 2004