If the plane crashes, the airport is still useful.

After the plane crashed, aerial photographs were still useful to some extent. Here are some reasons:

1. Accident investigation: Aerial maps can provide geographical and topographic information of the crash site, which is very important for accident investigators to analyze and reconstruct the crash. Possible reasons can be inferred from the information on the map, such as terrain obstacles and weather conditions.

2. Rescue mission: Aerial maps can help rescue teams determine the exact location of the crash site, thus quickly deploying rescue personnel and resources. Geographical indications and topographic information on the map help to determine the most suitable route to the crash site.

3. Aircraft positioning: In some modern aircraft, there is a technology called ADS-B (Automatic Correlation Monitoring-Broadcasting), which can transmit the position of the aircraft and other related information in real time. When the plane is lost or has an accident, the aerial map can show the last known position of the plane, which is helpful for searching and restoring the task.

However, it should be noted that the aviation map does not provide real-time information, so the information displayed on the map may not be up-to-date or accurate after the plane crash. Decisions and actions should be made according to the real-time situation and the guidance of rescuers.