Development testing of the Lockheed Martin F-35 could be delayed by 12 months and cost another $1.7 billion, the US Government Accountability Office (GA0) warns in a new report published on 24 April.

In a report submitted to the US Congress, the GAO says that the F-35’s government managers at the joint programme office (JPO) have adopted an “optimistic” estimate for a five-month delay and $532 million cost overrun to complete Block 3F software, the fifth and final software release to support the 15-year-long system development and demonstration phase of the family of stealth fighters.

GAO’s analysis based on historical data suggests Block 3F testing won’t be complete until May 2018, or 12 months later than currently scheduled. The GAO’s anticipated or cost growth of $1.7 billion would raise overall development programme costs to $56.8 billion, $22.4 billion higher than the original budget at contract award in October 2001.

This sort of clusterf%$# has become so common for the F-35 that I’m not sure if it even qualifies as news these days.