SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of September, 2006 RYANAIR HOLDINGS PLC (Translation of registrant's name into English) c/o Ryanair Ltd Corporate Head Office Dublin Airport County Dublin Ireland (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. Form 20-F..X.. Form 40-F..... Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes ..... No ..X.. If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- ________ Ryanair Holdings Plc 11th September 2006 Re: Holding in Company A Letter from The Capital Group Companies, Inc dated 8 September 2006 to Ryanair Holdings Plc, received by Ryanair Holdings Plc on the 11 September 2006. Re: Section 67 Notification Enclosed is a Section 67 Notification date 7 September 2006. Please note that one or more of the affiliates of The Capital Group Companies, Inc. have made notifications to your company pursuant to Section 67 in the past. For a description of our organisation, please visit our Web site at www.capgroup.com. For the purposes of this notification an outstanding share balance of 771,729,697 shares was used to calculate the percentages of holdings of the relevant share capital which determine the notifiable interest. We believe this outstanding share balance is current; however, if this number is not accurate, please contact us as soon as possible so we may make the necessary revisions to this notification. Should you have questions or require additional information, please contact Gina Martinez or Vivien Tan at (213) 815 -0489, or send a fax message to (213) 486-9698. Alternatively, you may contact us via E-mail at GRGroup@capgroup.com. Vivien Tan Compliance Associate The Capital Group Companies, Inc. As of 7 September 2006 Ryanair Holdings Plc Schedule A Number of Percent of Shares outstanding The Captial Group Companies, Inc. 62,348,672 8.079% ("CG") holdings Holdings by CG Management Companies and Funds: - Capital Guardian Trust Company 6,468,581 0.838% - Capital International Limited 3,968,408 0.514% - Capital International S.A. 817,335 0.106% - Capital International, Inc. 257,788 0.033% - Capital Research and Management Company 50,836,560 6.587% - EuroPacific Growth Fund 29,010,000 3.759% Schedule B Schedule of holdings in Ryanair Holdings, Plc As of 7 September 2006 CAPITAL GUARDIAN TRUST COMPANY Registered Name Local Shares Cede & Co 5,256,000 55 Water Street New York, NY 10006 Alibank Nominees Limited 1,212,581 Allied Irish Bank, Stock Exchange and Trust Services Bank Centre, P.O.Box 512 Dublin, Ballsbridge Total 6,468,581 Schedule B CAPITAL INTERNATIONAL LIMITED Registered Name Local Shares Bank of New York Nominees 552,623 Bank of New York 3 Birchin Lane London EC3V 9BY UK Northern Trust 223,154 C/O NorTrust Nominees Limited 155 Bishopsgate London EC2M 3XS UK Cede & Co 128,190 55 Water Street New York NY 10006 Citibank London 69,530 11 Old Jewry London EC2R 8D8 UK Nortrust Nominees 34,434 155 Bishopsgate London EC2M 3XS United Kingdom Bank of Ireland 732,145 Intl Financial Services Center 1 Harbourmaster Place Dublin 1 Allied Irish Bank Plc 569,843 Stock Exchange and Trust Services Bank Centre, P.O. Box 512 Ballsbridge, Dublin 4 MSS Nominees Limited 69,300 Midland Bank Plc Mariner House, Pepys London EC3N 4DA State Street Bank & Trust Co 222,586 Deutsche Bank AG 26,400 23 Great Winchester Street London EC2P 2AX United Kingdom Mellon Bank N.A. 5,600 London Branch London United Kingdom Alibank Nominees Limited 593,143 Allied Irish Bank Stock Exchange and Trust Services Bank Centre PO Box 512 Dublin Ballsbridge Bank of Ireland Nominees Limited 453,500 Bank of Ireland International Financial Services Center 1 Harbourmaster Place AIB Custodial Nominees Limited 113,500 JP Morgan Chase Bank 174,460 Total 3968,408 Capital International S.A Schedule B Registered Name Local Shares Cede & Co 678,935 55 Water Street New York NY 10006 Bank of Ireland 11,400 Intl Financial Services Center 1 Harbourmaster Place Dublin 1 Bank of Ireland Nominees Limited 127,000 Bank of Ireland Intl Financial Services Center 1 Harbourmaster Place Total 817,335 Capital International, Inc Schedule B Registered Name Local Shares Cede & Co 143,000 55 Water Street New York, NY 10006 Alibank Nominees Limited 114,788 Allied Irish Bank Stock Exchange and Trust Services Bank Centre P.O. Box 512 Dublin Ballsbridge Total 257,788 Capital Research and Management Company Schedule B Registered Name Local Shares Cede & Co 50,836,560 55 Water Street New York, NY 10006 Total 50,836,560 This announcement has been issued through the Companies Announcement Service of the Irish Stock Exchange. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized. RYANAIR HOLDINGS PLC Date: 12 September, 2006 By:___/s/ James Callaghan____ James Callaghan Company Secretary & Finance Director