Lockheed Martin said Aug. 18 in a company release that it had “successfully completed” developmental flight testing for the three C-5 test aircraft that had undergone Reliability Enhancement and Re-engining Program modification. Next up is operational testing by the Air Force, slated to begin in the third quarter of 2009. According to George Shultz, C-5 modernization program VP at Lockheed, the RERP aircraft, now designated C-5M, “performed great throughout the test program, demonstrating consistent and reliable performance allowing this team to execute all test points as planned.” Under the Air Force’s latest plan for the C-5 fleet, all C-5B and C-5C aircraft will receive RERP upgrades. The oldest C-5s, the A models, will receive only the Avionics Modernization Program upgrade. Lockheed says it has completed AMP mods on 43 C-5s, which are back in service. The service has some 49 B and C models and nearly 60 A models, a few of which are grounded or on restrictions.
The rate of building B-21 bombers would speed up if the fiscal 2026 defense budget passes. But it remains unclear how much capacity would be added, and whether the Air Force would simply build the bombers faster, or buy more.