Pakistan has refused Bangladesh permission to use its airspace for the transport of nuclear fuel, citing what officials described only as a "technical issue," according to NDTV.

The denial forces any fuel-carrying flight between Bangladesh and its supplier countries to route around Pakistani territory, adding distance, flight time and cost to a logistics chain that sits at the center of Bangladesh's civil nuclear program.

Bangladesh is building its first nuclear power plant at Rooppur, a two-unit VVER project, and the movement of fresh fuel to the site depends on tightly controlled air corridors agreed with each country whose territory lies along the route. Overflight denials of the kind reported by NDTV are rare in civil nuclear logistics, where governments typically negotiate diplomatic clearances months in advance of each shipment.

Pakistan has offered no public detail on the nature of the technical issue, and NDTV's report does not specify which flight, route or shipment window the refusal affects. That absence of specificity leaves open whether the denial applies to a single consignment or to Bangladesh's nuclear fuel corridor more broadly — a distinction that matters for Rooppur's fuel loading schedule.

For flight planners, the immediate consequence is geometric. Air traffic between Bangladesh and Russia or Central Asia — the likely origin points for Rooppur fuel — would normally cross Pakistani airspace. A refusal to clear such flights pushes carriers onto longer southern or northern routings, increasing fuel burn and requiring revised permits from additional countries along any alternative corridor.

The incident also illustrates how nuclear transport approvals remain hostage to bilateral relations. Overflight rights for radioactive cargo require explicit consent from every state on the route, and a single refusal can invalidate an entire flight plan, regardless of the commercial or schedule consequences for the operator contracted to fly the mission.

Neither Pakistan's aviation authority nor Bangladesh's nuclear agency has published a formal statement beyond the report. Unless Islamabad clarifies the scope of its denial or Dhaka secures an alternative corridor, each subsequent fuel movement for Rooppur will face the same routing constraint.