Airworthiness Directive · Amendment 39-14125 · GROB-WERKE Model G120A Airplanes
GROB-WERKE Model G120A Airplanes
This AD affects Model G120A airplanes, all serial numbers, that are certificated in any category.
The FAA adopts a new airworthiness directive (AD) for all GROB-WERKE (GROB) Model G120A airplanes. This AD requires you to repetitively inspect the nose landing gear (NLG) assembly, paying special attention to the NLG swivel tube and the engine truss in the area of the NLG attachment, for cracks and damaged (defective) welding seams. If you find cracks or defects during any inspection, this AD requires you to replace the cracked or defective part. This AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. We are issuing this AD to detect and correct cracks and defects in the NLG assembly, which could result in failure of the NLG. This failure could lead to a hard landing and/or loss of control of the airplane during landing operations.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Inspect the nose landing gear (NLG) assembly for cracks or damages (defective) welding seams. Pay special attention to the NLG swivel tube and the engine truss in the area of the NLG attachment | Initially inspect within the next 50 hours time-in-service (TIS) after July 28, 2005 (the effective date of this AD), unless already done. Repetitively inspect thereafter at intervals not to exceed 50 hours TIS | Follow GRDB Service Bulletin No. MSB1121-055 dated November 26, 2004. |
| (2) If you find cracks or defects during any inspection required in paragraph (e)(1) of this AD, replace the cracked or defective part | Replace before further flight after the inspection in which cracks and/or defects are found. After you replace the cracked or defective part, continue with the repetitive inspections required in paragraph (e)(1) of this AD at the 50 hours TIS intervals | Follow GROB Service Bulletin No. MSB1121-055 dated November 26, 2004. |
Note: The compliance time in this AD is different than the compliance time in GROB Service Bulletin No. MSB1121-055 dated November 26, 2004. The compliance time in this AD takes precedence over the compliance time in the service information.
