EFFECTIVITY
MODEL SERIAL NUMBERS
560XL (Citation Excel) -5002 thru -5372
560XL (Citation XLS) -5501 thru -5830
560XL (Citation XLS+) -6001 thru -6141
REASON
Operating the airplane in certain environmental conditions can cause premature corrosion on the hydraulic
tubes located in the flap and wheel wells.
DESCRIPTION
This service bulletin provides parts and instructions 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.
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.
MODEL SERIAL NUMBERS
560XL (Citation Excel) -5002 thru -5372
560XL (Citation XLS) -5501 thru -5830
560XL (Citation XLS+) -6001 thru -6141
REASON
Operating the airplane in certain environmental conditions can cause premature corrosion on the hydraulic
tubes located in the flap and wheel wells.
DESCRIPTION
This service bulletin provides parts and instructions 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.
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.
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