CRI  Certification Review Item 
CRK  Crank 
CRL  Collar 
CROSSFEEDR  Crossfeeder 
CRQ  Customer Request 
CRR  Component Reliability Report 
CRS  Course 
CRS  Cold Rolled Steel 
CRS  Cost Repercussion Sheet 
CRSN  Corrosion 
CRT  Cathode Ray Tube 
CRU  Card Reader Unit 
CRU  Cabin Router Unit 
CRZ  Cruise 
CS  Centistokes 
CS  Cabin Cleaners Steps 
CS  Call Switch 
CS  Center Spar 
CSAS  Cooled Service Air System 
CSD  Constant Speed Drive 
CSDM  Concession Support Decision Manual 
CSE  Course Set Error 
CSF/L  Continuous Safe Flight/Landing 
CSI  Cycles Since Installation 
CSIP  Customer Satisfaction Improvement Programme 
CSK  Countersink 
CSKH  Countersunk Head 
CSL  Console 
CSM  Computer Software Manual 
CSM/G  Constant Speed Motor/Generator 
CSN  Catalog Sequence Number 
CSPM  Customer Support Procedure Manual 
CSS  Cockpit System Simulator 
CST  Cabin Service Trainer 
CSTG  Casting 
CSTR  Constraint 
CSU  Command Sensor Unit 
CSV  Cycles Since Last Shop Visit 
CT  Current Transformer 
CT  Center Tape 
CTA  Control Area 
CTDP  Cabin Trainer Data Packages