EXHIBIT 31.2

                                  CERTIFICATION

         The undersigned, in her capacity as the Controller and Chief Accounting
Officer of Motient Corporation, being the principal financial officer, as the
case may be, provides the following certification required by 18 U.S.C. Section
1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

         I, Myrna J. Newman, hereby certify that:

         1. I have reviewed this quarterly report on Form 10-Q of Motient
Corporation, a Delaware corporation;

         2. Based on my knowledge, this quarterly report does not contain any
untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
quarterly report;

         3. Based on my knowledge, the financial statements, and other financial
information included in this amended quarterly report, fairly present in all
material respects the financial condition, results of operations and cash flows
of the registrant as of, and for, the periods presented in this quarterly
report;

         4. The registrant's other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

                  (a) Designed such disclosure controls and procedures, or
                  caused such disclosure controls and procedures to be designed
                  under our supervision, to ensure that material information
                  relating to the registrant, including its consolidated
                  subsidiaries, is made known to us by others within those
                  entities, particularly during the period in which this report
                  is being prepared;

                  (b) Evaluated the effectiveness of the registrant's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of the disclosure controls
                  and procedures, as of the end of the period covered by this
                  report based on such evaluation; and

                  (c) Disclosed in this report any change in the registrant's
                  internal control over financial reporting that occurred during
                  the registrant's most recent fiscal quarter that has
                  materially affected, or is reasonably likely to materially
                  affect, the Company's internal control over financial
                  reporting; and

         5. The other certifying officer and I have disclosed, based on my most
recent evaluation of internal control over financial reporting, to the
registrant's auditors and the audit committee of the registrant's board of
directors (or persons performing the equivalent functions):



                  (a) All significant deficiencies and material weaknesses in
                  the design or operation of internal control over financial
                  reporting which are reasonably likely to adversely affect the
                  registrant 's ability to record, process, summarize and report
                  financial information; and

                  (b) Any fraud, whether or not material, that involves
                  management or other employees who have a significant role in
                  the registrant 's internal control over financial reporting.

                                        /s/ Myrna J. Newman
                                        -------------------
                                        Myrna J. Newman

                                        Controller and Chief Accounting Officer
                                        (principal financial officer)

                                        August 15, 2005