What is used for lavatory sealing, and what must be reported if broken?

The use of white torque sealant is standard for lavatory sealing due to its effectiveness in indicating whether a seal has been disturbed. This material ensures that the lavatory systems remain secure and operational, preventing unauthorized access or accidental changes to the system's integrity.

If the white torque sealant is broken, it is vital to notify the Pilot in Command (PIC). This action is essential because the PIC is responsible for the safety and operational readiness of the aircraft. A broken seal can indicate potential issues with the lavatory system that could affect the overall safety and comfort of the flight, thus elevating the urgency for the PIC to take necessary actions or implement corrections as needed.

In essence, the protocol of using white torque sealant reinforced by notifying the PIC ensures that any potential security or operational concerns are handled promptly and effectively.