AD 86-18-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Burkhart Grob Luft-Und | G103 Twin Astir | Airworthiness Directives; GROB WERKE GMBH (BURKHART GROB) Model G103 TWIN ASTIR Gliders |
Unsafe Condition
Failure of the rudder control rear parallel lever P/N II 103-4320.05 which could result in loss of rudder control.
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Required Actions
Within the next 10 hours time-in-service after the effective date, and thereafter at intervals not exceeding 10 hours time-in-service after the last inspection, visually inspect the rear parallel lever in the area of the left and right boreholes using a 10 power or greater magnifying glass for cracks. If a cracked lever is found, before further flight, replace it with a stronger new parallel lever. Within the next 30 hours time-in-service but no later than 60 days after the effective date, replace any unreplaced lever with a stronger one made of stock aluminum.
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Compliance Time
Within the next 10 hours time-in-service after the effective date of this AD, and thereafter at intervals not to exceed 10 hours time-in-service after the last inspection, until compliance with Paragraph (c) is accomplished. Additionally, within the next 30 hours time-in-service but no later than 60 days after the effective date for replacement under Paragraph (c).
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Affected Aircraft
GROB WERKE GMBH (BURKHART GROB) Model G103 TWIN ASTIR gliders serial numbers 3000 through 3291, and 3000-T-1 through 3284-T-44 certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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