West Star has announced its first Aft Canted Bulkhead Modification for a Citation 680 at its East Alton (ALN) facility. Textron Aviation’s Mandatory Service Bulletin (SB680-53-08R2) for the Aft Canted Bulkhead Modification is applicable to both Sovereign (680 S/N 1-349) and Sovereign Plus (680-S/N 500-531). For aircraft with 7000 or more flight hours at the time of receipt, this service bulletin must be accomplished within 1800 flight hours or 24 months, whichever occurs first, from the date of receipt.
The SB680-53-08R2 is a mandatory modification that involves removal of the APU, associated heat shield and containment structures. The Aft Canted Bulkhead is modified by adding structural pieces to reinforce the bonded assembly to prevent potential de-bonding of the vertical and horizontal stiffeners. This modification is being completed at West Star’s ALN facility along with the customer’s routine inspection event to minimize downtime.
