The Case of the Turco Tank Alarm

THE MYSTERY A manufacturer of aircraft parts was having mystifying issues with their Turco tank. Sometimes the customer could turn on the machine and the burner with no problem — but then 10 minutes later it would randomly shut down and sound an alarm. At other times...

The Case of the Whistling Oven

THE MYSTERY A manufacturer of specialized motors had an oven that was way out of calibration. The mid-sized electric oven, used to cure epoxy for motor windings, was 30º out of range, a huge discrepancy for an oven that’s rated ±2½ºF. THE CLUES The first thing the...