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pdf Gfa ad 155 Popular

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Gfa ad 155

MODIFICATION OF AIRBRAKE FASTENING SCREWS

Applicable to the Twin Astir (S/Nos 3000-3255) and Twin Astir Trainer (S/Nos. 3001-T-1 to 3254-T-31). Modification to avoid possibility of accidental loosening of fastening screws on the airbrake lever. Grob Technical Note TM 103-6 forms part of this AD.