interpreting complex technical information (e.g., parts manuals, maintenance manuals, manufacturers' specifications, systems schematics, test data, etc.) to troubleshoot aircraft problems, prepare repair/modification estimates, perform repairs, and inspect aircraft. Skill in: diagnosing, troubleshooting, and repairing aircraft and aircraft systems (e.g., mechanical, electrical, hydraulic, structural) involving the use of sophisticated testing equipment, meters, hand and specialized tools, schematics, etc.