# Proposed AD FAA-2007-28730: GARMIN International GSM 85 Servo Gearbox Units

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-02-06
- Products: Garmin International
- Product type: Appliance
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 21, 2007, 72 FR 46582
- Comments due: October 22, 2007
- Became: [AD 2008-02-06](https://openairdocs.org/ad/2008-02-06)
- Docket: FAA-2007-28730 (https://www.regulations.gov/docket/FAA-2007-28730, where comments are filed)
- Project: 2007-CE-063-AD
- FR document: E7-16416
- Official PDF: https://openairdocs.org/files/sha256/76/e9/76e96f24d1cc5f2bcf60cb18b65c248360dcada2496b1fad23b418e717c04614 (from https://www.govinfo.gov/content/pkg/FR-2007-08-21/pdf/E7-16416.pdf)
- Federal Register: https://www.federalregister.gov/documents/2007/08/21/E7-16416/airworthiness-directives-garmin-international-gsm-85-servo-gearbox-units
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7631E6BAE7B5F8988625733E006211D6.0001
- Page: https://openairdocs.org/proposed/FAA-2007-28730

## Summary

We propose to adopt a new airworthiness directive (AD) for certain GARMIN International (GARMIN) GSM 85 servo gearbox units that are installed on airplanes. This proposed AD would require you to inspect the GSM 85 servo gearbox for foreign object debris and return the unit to the manufacturer for replacement if you find debris. This proposed AD results from reports of certain GARMIN GSM 85 servo gearbox units that have foreign object debris inside the assembly. We are proposing this AD to detect and correct defective GARMIN GSM 85 servo gearbox units, which could result in jamming of the gearbox. Jamming of the gearbox could lead to the pilot having to apply excessive manual force to control the airplane.

## Notices in this docket

- Aug 21, 2007: Notice of proposed rulemaking (NPRM). (first notice), FR document E7-16416, comments due Oct 22, 2007 (https://www.federalregister.gov/documents/2007/08/21/E7-16416/airworthiness-directives-garmin-international-gsm-85-servo-gearbox-units)

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