LANDING GEAR - STAINLESS STEEL HYDRAULIC TUBE REPLACEMENT (Citation SB560XL-32-42)

EFFECTIVITY
MODEL SERIAL NUMBERS
560XL (Citation Excel) -5002 thru -5372
560XL (Citation XLS) -5501 thru -5830
560XL (Citation XLS+) -6001 thru -6141

NOTE: SB560XL-27-35 may be accomplished at the same time to replace the aluminium hydraulic tube assemblies for the flap and speed brake system located in the flap and wheel wells with stainless steel tube assemblies

REASON

Operating the airplane in certain environmental conditions can cause premature corrosion of the landing gear extension and retraction hydraulic components.

DESCRIPTION
This service bulletin provides parts and instructions to replace the aluminium hydraulic tube assemblies located in the MLG and NLG wheel wells with stainless steel tube assemblies.

COMPLIANCE
OPTIONAL. This service bulletin can be accomplished at the discretion of the owner.

A service bulletin published by Cessna Aircraft Company may be recorded as “completed” in an aircraft log only when the following requirements are satisfied:

1) The mechanic must complete all of the instructions in the service bulletin, including the intent therein.

2) The mechanic must correctly use and install all applicable parts supplied with the service bulletin kit. Only with written authorization from Cessna Aircraft Company can substitute parts or rebuilt parts be used to replace new parts.

3) The mechanic or airplane owner must use the technical data in the service bulletin only as approved and published.

4) The mechanic or airplane owner must apply the information in the service bulletin only to aircraft serial numbers identified in the “Effectivity” section of the bulletin.

5) The mechanic or airplane owner must use maintenance practices that are identified as acceptable standard practices in the aviation industry and governmental regulations