The 21-year-old roof on Guernsey Airport has been covered in scaffolding for more than a year, and it's not known when repairs will be completed.
Guernsey States say the structure has "long-standing issues" that were worsened by Storm Ciaran in November 2023.
The high winds dislodged several roof panels, which fell onto the apron area.
To prevent similar damage, scaffolding has been installed covering both the upper and lower sections of the building.
T&G Structural Engineers have been appointed to undertake a full engineering survey.
President of the States’ Trading Supervisory Board, Deputy Mark Helyar says a lack of government funding may stall the project.
“I am sure we would all like to see the roof repaired as soon as possible given the status of the airport as a primary business and travel gateway, but the scaffolding cannot be removed until the structure has been inspected, repaired and declared safe.
"Regrettably, the government’s continued structural deficit and the fact that the ports have a substantial list of repairs which we already cannot afford to fund, means that the timescale for completion of any necessary repairs remains uncertain.”
Guernsey Ports Airport Director Richard Thomasson says that although the scaffolding was not the best first or last impression of Guernsey, it was performing an important function.
“It provides a layer of protection to the current structure and sustaining aerodrome operations, so it will need to remain in place until we can deliver a long-term solution.
"The survey is an important milestone, as it will provide the clear answers needed to decide those next steps and the likely costs.
"We need to understand these before we can address how this work can be funded, and it will need to be prioritised alongside other critical infrastructure maintenance across Guernsey Ports.”
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