Final answer:
Without specific context or confirmation, the truthfulness of the impact of grounding Boeing 737 Max 8 aircraft on airline stock prices in Canada cannot be verified, though such events typically have economic implications. The reference to the Gimli Glider incident underscores the importance of precision in the airline industry and the broader context of airline economics and safety.
Step-by-step explanation:
The statement regarding the grounding of all Boeing 737 Max 8 aircraft by Canada's minister of transportation and the consequential impact on the stock prices of Air Canada, WestJet Airlines, and Transat Vacations can be true, as such announcements regarding the safety concerns of aircraft fleets typically do affect the economics of associated airlines and the aviation industry. However, the provided reference information does not confirm the specific announcement or its impact on stock prices, thereby making it difficult to determine the statement's accuracy without further context.
The incidents described, such as the emergency landing of the Air Canada Boeing 767 known as the "Gimli Glider" due to a fuel metric conversion error, highlight the importance of careful attention to measurements and the potential ramifications of miscommunications in the airline industry. Issues related to deregulation, safety, and competition in the airline industry as mentioned in the reference, although not directly related to the question, present an environment in which decisions about aircraft usage can have significant consequences.