Geneva - IATA announced global passenger traffic results for June showing a modest deceleration in demand growth compared to the prior month. Total revenue passenger kilometers (RPKs) rose 4.7% over the year-ago period, which was below the 6.2% year-on-year increase recorded in May 2014. June capacity (available seat kilometers or ASKs) increased by 5.0%, causing load factor to slip 0.2 percentage points to 81.5%.