| AD Number | 91-12-06 | Status | Active |
| Effective Date | July 05, 1991 | Issue Date | Not specified |
| Docket Number | 91-CE-05-AD | Amendment | 39-7017 |
| Product Type | ["Aircraft"] | Product Subtype | ["Glider"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Burkhart Grob Luft-Und |
| Model(s) | GROB G 109B |
91-12-06 GROB LUFT UND RAUMFAHRT: Amendment 39-7017. Docket No. 91- CE-05-AD.
Applicability: Model G 109B motor gliders (serial numbers 6200 through 6362), certificated in any category.
Compliance: Required within the next 3 calendar months after the effective date of this AD, unless already accomplished.
To prevent separation of the studs in the root rib stud plate that could result in loss of the aileron and airbrake control systems, accomplish the following:
(a) Inspect the security of the studs in the root rib stud plate (part number 109B- 4108) in accordance with the instructions in GROB Service Bulletin No. TM-817-29, dated August 6, 1990. If any loose studs are found, prior to further flight, repair the stud plate in accordance with the instructions in the referenced SB.
(b) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the motor glider to a location where the requirements of this AD can be accomplished.(c) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Brussels Aircraft Certification Office, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, B- 1000 Brussels, Belgium; Telephone (322) 513.38.30. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Office.
(d) All persons affected by this directive may obtain copies of the document discussed in this AD upon request to GROB Luft und Raumfahrt, D-8939 Mattsies, Federal Republic of Germany; or may examine this document at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106.
This amendment (39-7017, AD 91-12-06) becomes effective on July 5, 1991.