Only about 100 properties will be eligible for free insulation to dull the noise of 480 weekly flights out of Western Sydney Airport under a preliminary plan.

But thousands of residents will experience five or more aircraft noises a day as loud as a washing machine once the airport reaches capacity, according to the draft environmental impact statement for Sydney’s second international airport.

The report, released onTuesday, said 7000-12,000 residents would experience noise loud enough to interrupt indoor conversations if windows were open.

Depending on the direction of travel, up to 84,500 people could be exposed to two events as loud as a conversation each night.

But the report estimates that only about 91 homes and other premises fall in the zone eligible to receive free insulation to abate noise.

Insulation measures include installing thicker windows, sealing gaps, improving roof insulation and solidifying external doors.

No properties will have to be acquired for being inside a noisier zone adjacent to the airport, although nearby residents can apply for consideration.

While the number of those eligible appears low, the draft report said as few as five properties would have been eligible if the criteria used for Sydney Airport was applied.

It also reflected lower residential density and planning over many years in anticipation of the airport’s construction.

Transport Minister Catherine King said people could have their say on the draft report and their feedback would be considered when finalising the flight path design.

“Feedback has, and continues to be, a critical element to ensuring we deliver an airport which realises … lasting benefits, while balancing the needs of the community, environment, industry and users of the broader greater Sydney airspace,” she said.

The single-runway facility will be the first airport in NSW to operate with no curfew. Flights will be able to take off and land at all hours to cater for up to 10 million passengers a year at the time of its opening in 2026.

The proposed flight paths, along with estimated aircraft noise impacts, are available to view through an online tool.

– AAP