The patrol route will cover Kempsey, Nambucca Heads, Raleigh, Boambee South and Coffs Harbour, weather permitting.

A complete flight schedule and clickable map are available online at: www.transgrid.com.au/patrols.

TransGrid Head of Maintenance Programs Ian Davidson said the patrols help identify any potential bushfire risks and assess the condition of towers and transmission lines.

"These annual safety inspections are an important part of our comprehensive maintenance program to ensure the transmission network is safe for the community and our staff," he said.

"The helicopters will fly along transmission lines across the Mid North Coast and will allow us to identify any potential issues so we can make repairs before they become a problem."

A specialist team will inspect more than 13,000 kilometres of transmission lines and infrastructure on TransGrid's network across NSW between May and July.

The patrols help identify where trees or vegetation may be growing close to lines and inspect infrastructure for any maintenance issues.

The helicopter will fly low near transmission lines at about 50 kilometres per hour and may startle livestock in rural areas, property owners should consider securing animals during the patrols.

"We'd like to thank the community for their patience and understanding as we carry out these critical inspections to keep everyone safe and remind the public to always exercise caution around transmission lines and towers," Ian said.

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