That same year, the TPA invested $15 million in upgrades to the island airport, including a new ferry, the TCCA1, to replace the old ferry to the airport. The TPA also imposed a $15 airport improvement fee, which along with the increase in passengers for Porter's service has increased the TPA's revenues to the point where in 2008, it reported its first profit on revenues. The TPA has purchased a new ferry for the airport using the airport improvement fees. The ferry purchase lead to a TPA Board of Directors dispute and conflict-of-interest investigation.