AD 88-12-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Burkhart Grob Luft-Und | G103 Twin Astir | Airworthiness Directives; GROB WERKE GMBH AND CO. KG (BURKHART GROB) Model G103 TWIN ASTIR, G103 TWIN II, and G103A TWIN II ACRO Gliders |
| aircraft | Burkhart Grob Luft-Und | G103 Twin II | Airworthiness Directives; GROB WERKE GMBH AND CO. KG (BURKHART GROB) Model G103 TWIN ASTIR, G103 TWIN II, and G103A TWIN II ACRO Gliders |
| aircraft | Burkhart Grob Luft-Und | G103A Twin II Acro | Airworthiness Directives; GROB WERKE GMBH AND CO. KG (BURKHART GROB) Model G103 TWIN ASTIR, G103 TWIN II, and G103A TWIN II ACRO Gliders |
Unsafe Condition
The tow-hook knob may drop into the control stick boot during flight and obstruct control stick movement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the aft tow-hook knob for wear, cracks, or looseness within 10 hours time-in-service after the effective date. If wear, cracks, or looseness is found, relocate the tow-hook knob position before further flight. If no issues are found, relocate the knob within 20 hours time-in-service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 10 hours time-in-service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
GROB WERKE GMBH AND CO. KG (BURKHART GROB) Model G103 TWIN ASTIR (Serial Numbers 3000 through 3291), G103 TWIN II (Serial Numbers 3501 through 3878), and G103A TWIN II ACRO (Serial Numbers 3501 through 3878 with supplement 'K' in the number).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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