Airworthiness directives › 2003-19-14
AD 2003-19-14 Airworthiness Directives; BURKHART GROB LUFT-UND RAUMFAHRT GmbH & CO KG Models G103 TWIN ASTIR, G103A TWIN II ACRO, and G103C TWIN III ACRO Sailplanes
Applicability*9
(c) This AD affects the following sailplane models and serial numbers that are certificated in any category: Model Serial numbers G103 TWIN ASTIR All serial numbers. G103A TWIN II ACRO (aerobatic category) All serial numbers with suffix “K”. G103C TWIN III ACRO (aerobatic category) All serial numbers.
Required actions
(e) To address this problem, you must do the following: Actions Compliance Procedures (1) For G103 TWIN ASTIR sailplanes: (i) Re-set the airspeed indicator to the new placard limitations; (ii) Install the following placard: Within the next 25 hours time-in-service (TIS) after November 30, 2005 (the effective date of this AD), unless already done Following GROB Service Bulletin No. MSB315-64/3, dated September 14, 2004. ER12OC05.010 (iii) You may perform simple aerobatic flight (looping, steep turns, lazy eights, and chandelles) following the flight manual; and (iv) Revise the flight and maintenance manuals. (2) For G103A TWIN II ACRO (acrobatic category) and G103C TWIN III ACRO (acrobatic category) sailplanes: (i) Re-set the airspeed indicator to the new placard limitations; and (ii) Install the following placards on Model G103A TWIN II ACRO (aerobatic category) sailplanes: Within the next 25 hours time-in-service (TIS) after August 12, 2004 (the effective date AD 2003-19-14 R1), unless already done Follow Grob Service Bulletin No. MSB315-65, dated September 15, 2003. ER12OC05.011 (iii) Install the following placards on Model G103C TWIN III ACRO (aerobatic category) sailplanes: ER12OC05.012 (3) For G103A TWIN II ACRO (acrobatic category) and G103C TWIN III ACRO (acrobatic category) sailplanes: as an alternative to the flight restrictions in paragraph (e)(2) of this AD, you may install additional stringers in the rear fuselage section. Installing additional stringers terminates the flight restrictions in paragraph (e)(2) of this AD. At any time after August 12, 2004 (the effective date AD 2003-19-14 R1) Follow Grob Service Bulletin No. OSB 315-66, dated October 16, 2003, and Work Instruction for OSB 315-66, dated October 16, 2003. (4) For G103A TWIN II ACRO (acrobatic category) and G103C TWIN III ACRO (acrobatic category) sailplanes: only if you installed the additional stringers specified in paragraph (e)(3) of this AD, do the following: (i) Remove the placard prohibiting all aerobatic maneuvers; (ii) Install the following flight limitation placard on Model G103A TWIN II ACRO (aerobatic category) sailplanes: Prior to further flight after doing the actions in paragraph (e)(3) of this AD Follow Grob Service Bulletin No. OSB 315-66, dated October 16, 2003. ER12OC05.013 (iii) Install the following flight limitation placard on Model G103C TWIN III ACRO (aerobatic category) sailplanes: ER12OC05.014 Note: The placard information in this AD is different from the information in the applicable service bulletins. This AD takes precedence over the service bulletins. You should update your placards to reflect the information presented in this AD.
Unsafe condition
(d) This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions specified in this AD are intended to prevent damage to the fuselage during limit load flight, which could result in reduced structural integrity. This condition could lead to loss of control of the sailplane.
Affected ADs
(b) This AD revises AD 2003-19-14 R1, Amendment 39-13676.
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