AD NUMBER: 2004-22-21
MANUFACTURER: Grob-Werke
SUBJECT: Airworthiness Directive 2004-22-21
SUMMARY: The FAA adopts a new airworthiness
directive (AD) for all GROB-WERKE (GROB) Model G120 Aairplanes.
This AD requires you to repetitively inspect visually the area
between the vertical stabilizer main spar and the nearby vertical
stabilizer skin for any disbonding/crack; repair any
disbonding/crack found; and calculate weight and balance after any
repair.