Brisbane Airport's rating downgraded by Australian Competition and Consumer Commission BRISBANE Airport chiefs have admitted the airport will hit capacity within two years - at least five years before a new runway can be completed. The crisis point and question mark hanging over the $1.3 billion project are highlighted in the latest Australian Competition and Consumer Commission annual report on the performance and quality of service at the country's major airports. Overall, the watchdog downgraded Brisbane's rating from "good" to "satisfactory', although it remained the highest among the five airports examined. Have you been delayed flying into Brisbane airport? Tweet your experience at #BNELATEAGAIN or leave a comment below The result was pushed down by the airlines' assessment of runway availability which plunged from "good' in 2010-11 to "poor" last year. The ACCC raises concerns over congestion at the country's biggest airports leading to a fall in the proportion of aircraft leaving and arriving on-time. "More investment is required to avoid excessive congestion and ensure that the needs of Australia's travellers can be adequately accommodated," the report say. According to Brisbane Airport, the current runway system is likely to reach capacity in the next two years. "While Brisbane Airport is in the early stages of constructing a new runway, there is conjecture as to how the project will proceed given the differences between the airport and the airlines on how its cost should be recovered," the report says. Brisbane Airport Corporation is demanding the airlines pre-fund a quarter of the new runway cost through increases to per-passenger landing charges over the construction period. The airlines refuse to pay for something they cannot use for seven to eight years. Brisbane Airport Corporation CEO Julieanne Alroe said the ACCC reference to Brisbane reaching capacity related to the morning and afternoon peak periods. This report does not differentiate between peak time capacity and overall airport capacity, which may lead to the incorrect assumption that Brisbane Airport will reach full capacity by 2015. This is not the case, as BNE retains significant opportunities for both domestic and international growth outside of peak times," Ms Alroe said. BAC also continues to work closely with Airservices and the airlines in implementing a number of short-term measures to ensure our current runway operations are as efficient as possible.  She said the fact Brisbane retained its position as the top of the five rated airports was a credit to the airport's 20,000 workers. While we're pleased with this result, we recognise that there will always be room for improvement. The ACCC report shows that a 4.6 percent rise in passenger numbers to 21.2 million in 2012 pushed up total aeronautical revenue for Brisbane Airport Corporation by 7 percent to $212.4 million while the operating margin increased 1.8 percent to $94.8 million. And Brisbane was again revealed to have the highest long-term parking charges in the country despite not raising them over the year. The cost of one-day parking was $40, while a week cost $140 ahead of Sydney at $127, Perth at $93, Melbourne at $77 and double Adelaide's $70. Short-term parking charges at Brisbane were second only to Sydney's at $14 per hour, compared to $16.