Exhibit 23.2 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this registration statement on Form S-4 of our report dated March 31, 1998 included in American Mobile Satellite Corporation's Form 10-K for the year ended December 31, 1997 and to all references to our Firm included in this registration statement. /s/ Arthur Andersen LLP Washington, D.C. June 22, 1998