AD NO.
2021-23-13
SUBJECT
Joint Aircraft Service Component (JASC) Code: 3444, Ground Proximity System
APPLICABILITY
This AD applies to all helicopters, certificated in any category, equipped with a radio (also known as radar) altimeter. These radio altimeters are installed on various helicopter models including, but not limited to, the helicopters for which the design approval holder is identified in paragraphs (c)(1) through (20) of this AD. (1) Airbus Helicopters (2) Airbus Helicopters Deutschland GmbH (3) Air Space Design and Manufacturing, LLC (4) Bell Textron Canada Limited (5) Bell Textron Inc. (6) Brantly International, Inc. (7) Centerpointe Aerospace Inc. (8) Columbia Helicopters, Inc. (9) The Enstrom Helicopter Corporation (10) Erickson Air-Crane Incorporated, DBA Erickson Air-Crane (11) Helicopteres Guimbal (12) Siam Hiller Holdings, Inc. (13) Kaman Aerospace Corporation (14) Leonardo S.p.a. (15) MD Helicopters Inc. (16) PZL Swidnik S.A. (17) Robinson Helicopter Company (18) Schweizer RSG LLC (19) Scotts-Bell 47 Inc. (20) Sikorsky Aircraft Corporation
ISSUED BY
FAA