Which condition allows the pilot to use an operational approach procedure for an inoperative airborne weather radar?

Using an operational approach procedure with an inoperative airborne weather radar is permitted when the approach is executed in accordance with the company's standard operating procedures. These procedures typically outline specific scenarios in which pilots may proceed safely under conditions that include equipment limitations, ensuring that safety is maintained despite the inoperative status of equipment like weather radar.

The company's standard operating procedures are designed to incorporate operational risk management, allowing pilots to utilize alternative methods or procedures that have been evaluated and approved at that specific carrier. This ensures that all necessary precautions are accounted for and that the flight can be conducted safely without the weather radar, addressing potential hazards through adequate planning.

In contrast, visual approaches typically rely on outside visibility rather than instruments, and there's no inherent provision for weather radar in those scenarios. Availability of an alternative airport may provide a backup option but does not directly impact the ability to use operational approach procedures in this context. Lastly, daytime operations offer different visibility conditions that do not necessarily change the operational standards set by the company regarding the use of procedures when equipment is inoperative.