COMPLIANCE
Mandatory This service bulletin must be performed for all affected products by June 17, 2014 or prior to 1000 hours time in service (whichever comes first).
PURPOSE
GSM 9100 servo gearbox units marked as Mod Level 0 or Mod Level 1 (as listed in Affected Products section) may be subject to premature wear of the gear shaft.
DESCRIPTION
SB1335 provides instructions to replace any affected GSM 9100 servo gearbox unit by June 17, 2012 or 1000 hours time in service (whichever comes first). Only GSM 9100 servo gearboxes marked as Mod Level 2 or greater should be installed as a replacement.
AFFECTED PRODUCTS
GSM 9100 servo mount units with part number 010-00803-00 (011-02214-00) and marked as Mod Level 0 (Figure 1) or Mod Level 1 (Figure 2) on the serial tag are affected by this bulletin.