What depth must holes exceed in daily inspections to warrant immediate attention?

In airport operations, safety inspections are vital to ensure that all areas are safe for vehicles and personnel. A depth of 3 inches for holes is a significant threshold because it indicates a potential safety hazard that could lead to accidents or damage to aircraft and ground vehicles. If a hole exceeds this depth, it is essential that it is addressed immediately to mitigate risks associated with tripping or vehicle damage.

Holes of this depth can disrupt the normal operation of the airport, creating not only safety concerns but also operational delays. Regular monitoring and prompt action regarding any hole reaching or exceeding 3 inches are crucial in maintaining a safe airport environment. This standard helps ensure that immediate corrective measures are taken, such as repairs or markings to alert personnel and operators of the hazard.