A cargo plane operated by K2 Airways disappeared over the Arabian Sea near the Pakistani port city of Karachi on Tuesday, July 7. The Boeing 737 was carrying five crew members. The plane reported a technical problem to air traffic controllers, then lost altitude rapidly and stopped transmitting its location Reuters. Pakistan's Navy joined local authorities in searching for the aircraft AP.

Here's what we know about the disappearance. The crew told air traffic control they had a technical issue. The plane then began descending steeply and quickly. Contact with the aircraft was lost shortly after Newsday. No one has officially said what the technical problem was — whether it involved the engines, the plane's hydraulic system (which controls basic flight functions), electrical systems, or something else. Pakistan's Civil Aviation Authority issued a statement about the suspected crash, but the plane's exact fate has not been confirmed Simple Flying.

Searches are happening in the Arabian Sea near Karachi, Pakistan's main port and a busy shipping hub. Because the plane went down over water, the search is now a maritime operation — teams need to find debris and any survivors across a wide area of ocean rather than at a single crash site AP. The names and backgrounds of the five crew members have not been released.

K2 Airways is a cargo airline — it transports goods rather than passengers. Cargo airlines in South Asia have faced questions about the age of their planes and how well they maintain them. Investigators will want to know how old this plane was, what condition it was in, and what cargo it was carrying. Pakistan's aircraft accident investigators will likely lead the formal investigation once the search turns to recovery.

When a plane descends rapidly and stops communicating, it can mean different things. It might mean something catastrophic failed inside the aircraft — an engine problem, structural damage, or loss of cabin pressure, for example. But it could also mean the crew managed to land the plane in the sea in a controlled way and the landing itself cut off communications. We won't know which until investigators find wreckage or debris.

The key to understanding what happened will be the plane's black boxes — two recording devices that track technical data and capture cockpit conversations. The Arabian Sea near Karachi is relatively shallow, which is an advantage; deeper ocean searches have taken much longer in other cases. Officials have not announced how long the search might take.

This incident will likely lead to closer examination of how Pakistan's smaller cargo airlines are regulated and maintained. When investigators finish their work, their findings may influence how strictly regulators oversee freight operations in the country.