Airworthiness Directive · Amendment 39-21966 · Flight control system
GROB Aircraft SE (Type Certificate Previously Held by GROB Aircraft AG) Airplanes
This AD applies to GROB Aircraft SE (type certificate previously held by GROB Aircraft AG) Model G 115EG airplanes, all serial numbers, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all GROB Aircraft SE (type certificate previously held by GROB Aircraft AG) (GROB) Model G 115EG airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as in-flight detachment of a rudder actuator hinge bracket. This AD requires repairing the support structure at the attachment to the attachment bolts on certain flight control surfaces, inspecting the support structure at the attachment bolts of all flight control surfaces, and taking corrective actions if discrepancies are detected. The FAA is issuing this AD to address the unsafe condition on these products.
Before further flight after the effective date of this AD, do the actions in paragraphs (g)(1) and (2) of this AD.
(1) For attachment bolts in control surface positions 3, 7, 12, 16, and 27, repair each bolt in accordance with paragraph 7, Repair/Instructions, of the following applicable service document, except you are not required to contact Grob:
(i) For the rudder and vertical stabilizer hinge bracket attachment points, GROB Aircraft Repair Instruction No. RI-1078-92/1, dated June 2, 2021.
(ii) For the flaps hinge bracket attachment points, GROB Aircraft Repair Instruction No. RI-1078-93/1, dated June 2, 2021.
(iii) For the aileron hinge bracket attachment points, GROB Aircraft Repair Instruction No. RI-1078-94/1, dated June 2, 2021.
(iv) For the elevator and horizontal stabilizer hinge bracket attachment points, GROB Aircraft Repair Instruction No. RI-1078-95/1, dated June 2, 2021.
(v) For the aileron and flap bellcrank hinge bracket attachment points, GROB Aircraft Repair Instruction No. RI-1078-97/1, dated June 2, 2021.
Note 1 to paragraph (g)(1): Control surface positions are shown on page 1 of the Appendix of GROB Aircraft Service Bulletin MSB1078-205/5, dated October 5, 2021.
(2) For attachment bolts in all other control surface positions, inspect each bolt for penetration into the supporting structure by following Part A, paragraphs 1.8.1 through 1.8.15, of the Accomplishment/Instructions in GROB Aircraft Service Bulletin MSB1078-205/5, dated October 5, 2021, except you are not required to contact GROB for repair approval. If a bolt moves on an attachment point or has penetrated a control surface, before further flight, repair the attachment point using the applicable repair instruction listed in paragraph (g)(1)(i) through (v) of this AD.
