Airworthiness directives › 2023-05-03
AD 2023-05-03 Airworthiness Directives; Alexander Schleicher GmbH & Co. Segelflugzeugbau Gliders
Applicability*9
This AD applies to Alexander Schleicher GmbH & Co. Segelflugzeugbau Model ASW-15 and ASW-15B gliders, all serial numbers, certificated in any category, equipped with wooden wing root ribs.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For Model ASW-15 gliders: Within 30 days after August 25, 2022 (effective date of AD 2022-14-14), and thereafter at intervals not to exceed 12 months, inspect all wing root ribs (4 places) for cracks, looseness, and damage, in accordance with the Action section in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Maintenance Instruction G, Issue 1, dated June 28, 2021. If there is a crack in any root rib, a loose rib or lift pin bushing, or any damage, before further flight, replace the root rib in accordance with Action paragraph (B) in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Technical Note 29, dated June 28, 2021, and steps 1 through 7 in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Repair instruction exchange of wing root ribs according to TN 29, dated June 28, 2021; or Action paragraph (C) in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Technical Note 29, Issue II, dated May 4, 2022, and steps 1 through 7 in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Repair instruction exchange of wing root ribs according to TN 29, dated June 28, 2021. (2) For Model ASW-15B gliders: Within 30 days after the effective date of this AD and thereafter at intervals not to exceed 12 months, inspect all wing root ribs (4 places) for cracks, looseness, and damage, in accordance with the Action section in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Maintenance Instruction G, Issue 1, dated June 28, 2021. If there is a crack in any root rib, a loose rib or lift pin bushing, or any damage, before further flight, replace the root rib in accordance with Action paragraph (C) in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Technical Note 29, Issue II, dated May 4, 2022, and steps 1 through 7 in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASW 15 Repair instruction exchange of wing root ribs according to TN 29, dated June 28, 2021. (3) For Model ASW-15 and ASW-15B gliders: Replacing all four wing root ribs with new ribs is terminating action for the repetitive inspections required by this AD.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated 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 wing root rib damage. The FAA is issuing this AD to detect and correct damaged root ribs. The unsafe condition, if not addressed, could result in reduced structural integrity of the wing assembly, which could lead to loss of control of the glider.
Affected ADs
This AD replaces AD 2022-14-14, Amendment 39-22119 (87 FR 43403, July 21, 2022) (AD 2022-14-14).
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