Which of the following is NOT typically part of COMAT?

In the context of airline operations, COMAT, or Company Material, refers specifically to items that are used for company business. This typically includes company materials, mail, reports, and correspondence that are essential for operational communication and management within the airline.

Passengers' luggage, however, is classified separately as it pertains to the personal belongings of individuals traveling with the airline. This luggage is not involved in company business and does not fall under the purview of COMAT, making it distinctly different from the other choices.

By understanding the definition and typical contents of COMAT, it is clear why the answer indicating passengers' luggage is appropriate, whereas the other options reflect items that are integral to the operational functions of the airline.