Airworthiness Directive · Amendment 39-15500 · Flight controls
De Havilland Support Limited Model Beagle B.121 Series 1, 2, and 3 Airplanes
This AD applies to Beagle B.121 series 1, 2, and 3 airplanes, all serial numbers, certificated in any category.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions:
(1) Within 100 hours time-in-service (TIS) after June 6, 2008 (the effective date of this AD) and thereafter at intervals not to exceed 100 hours TIS, inspect the rudder torque tube assemblies following De Havilland Support Limited Service Bulletin B121/65, Issue 2, dated August 10, 2005.
(2) Before further flight, replace any cracked rudder torque tube assemblies and correct any loose rivets in the rudder torque tube assemblies that are found in the inspections required in paragraph (f)(1) of this AD, following De Havilland Support Limited Service Bulletin B121/65, Issue 2, dated August 10, 2005.
(3) After June 6, 2008 (the effective date of this AD), used rudder torque assemblies held as spares for De Havilland Support Limited Model Beagle B.121 series 1, 2, and 3 airplanes must be inspected following De Havilland Support Limited Service Bulletin B121/65, Issue 2, dated August 10, 2005, and found free of cracks prior to installation.
Note: This AD differs from the MCAI and/or service information as follows: No differences.
