A technician uses an ultrasound leak detector to test a truck's air brakes for leaks. CTRL Systems Inc. manufactures the UL101, a handheld ultrasound detector. Applications include leak detection and ...
as the knowledge test in the process to obtain one’s Class 5 is the Class 7 knowledge test (learner’s licence) the air brake endorsement the S-endorsement the Safety Fitness Certificate (SFC) ...