A        Design Defect
B        New Feature - Change in Functionality
D        New Feature - No Change in Functionality
E        Safety Problem
F        Safety and Reliability Improvement
G        Performance Improvement
H        Reliability Improvement
AC       Conditional Design Defect
CHR      Change of Requirements
CRD      Cost Reduction
CUR      Customer Request
CUS      Customer Reported Condition
DOC      Documentation Error
EXP      Expense
FIR      Fire
LER      Legal Requirement
LOR      Loss of Revenue
MAA      Material or Component Availability
PAI      Packaging Improvement
SEI      Serviceability Improvement
STR      Standards Requirements
UIRA     Unscheduled or Unplanned Incident or Repair Action