(2022) Service Bulletin 22117 Rev B: Cable Retention Pins

PRODUCTS AFFECTED:

All 011-01904-XX and 011-02490-XX Garmin GSM 86 Servo Gearboxes with capstan output devices that use 233-00075-01 and 233-00075-02 Cable Retention Pins are affected.

NOTE
Installations that use a GSM 86 with a crank arm or sprocket output device are not affected.

CERTIFICATION AUTHORIZATION:

TSO Authorization

TSO Authorization does not provide installation airworthiness approval. Separate installation airworthiness approval is required for type-certified aircraft. Notification of revision to any Garmin STC(s) will be provided under a separate service bulletin.

COMPLIANCE:

Compliance with the Service Bulletin 22117 is recommended at a maintenance interval not to exceed 1 year.

PURPOSE:

In the event of the loss of the clutch retaining bolt, the output shaft drive pin may become partially disengaged causing the capstan to bind.

WARRANTY INFORMATION

Labor costs incurred with this modification are reimbursable for GSM 86 servos covered by the original Garmin Warranty or the aircraft's factory warranty (excluding extended warranties).

The warranty claim must be submitted by 12/31/24.