Airworthiness directives › 2004-08-13
AD 2004-08-13 Airworthiness Directives; BURKHARDT GROB LUFT-UND RAUMFAHRT GmbH & CO KG Models G103 Twin ASTIR, G103 TWIN II, G103 TWIN III ACRO, and G103 C Twin III SL Sailplanes
Applicability*9
(c) This AD affects the following model and serial number sailplanes that are certificated in any category: Models Serial Numbers (1) G103 Twin ASTIR 3000 through 3291. (2) G103 TWIN II 3501 through 3720. (3) G103 TWIN III ACRO All serial numbers beginning with 34101. (4) G103 C Twin III SL 35002 through 35051.
Required actions
(e) To address this problem, you must do the following: Actions Compliance Procedures (1) Replace the CG release hook attachment brackets with improved design brackets, as follows: (i) For the Models G103 Twin ASTIR, G103 TWIN II, and G103 TWIN III ACRO sailplanes: part number (P/N) 103B-2360.01/1 and P/N 103B-2360.02/1; and (ii) For the Model G103 C Twin III SL sailplane: P/N 103B-2360.01/2 and P/N 103B-2360.02/2. Within the next 25 hours time-in-service (TIS) after June 4, 2004 (the effective date of this AD), unless already done Follow Grob Service Bulletin No. MSB869-22, dated January 22, 2002; and Grob Service Bulletin No. MSB315-62, dated January 21, 2002. (2) Do not install any CG release hook attachment bracket that is not a part number referenced in paragraphs (e)(1)(i) and (e)(1)(ii) of this AD, as applicable As of June 4, 2004 (the effective date of this AD) Not Applicable.
Unsafe condition
(d) This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions of this AD are intended to prevent abnormal or uncontrolled sailplane release due to cracked center of gravity (CG) release hook attachment brackets. This condition could result in reduced or loss of sailplane control.
Affected ADs
(b) None.
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