F-35 Completes Most Comprehensive Flight Test Program In Aviation History
(Source: F-35 Joint Program Office; issued April 12, 2018)
The Joint Program Office said the final S.D.D. test flight was flown by F-35C aircraft CF-2, which tested loads data while carrying four GBU-31 Joint Direct Attack Munitions and AIM-9X Sidewinder missiles. (LM photo)
The F-35 program has accomplished the final developmental test flight of the System Development and Demonstration phase of the program.

The F-35 Integrated Test Force is based at Edwards Air Force Base, California, and Naval Air Station Patuxent River, Maryland,

“Completing F-35 SDD flight test is the culmination of years of hard work and dedication from the joint government and industry team,” said Vice Adm. Mat Winter, F-35 Program executive officer. “Since the first flight of AA-1 in 2006, the developmental flight test program has operated for more than 11 years mishap-free, conducting more than 9,200 sorties, accumulating over 17,000 flight hours, and executing more than 65,000 test points to verify the design, durability, software, sensors, weapons capability and performance for all three F-35 variants. Congratulations to our F-35 test team and the broader F-35 enterprise for delivering this new powerful and decisive capability to the warfighter.”

The final SDD flight occurred April 11 at Naval Air Station Patuxent River, Maryland, when Navy test aircraft CF-2 completed a mission to collect loads data while carrying external 2,000-pound GBU-31 Joint Direct Attack Munitions and AIM-9X Sidewinder heat-seeking missiles.

From flight sciences to mission systems testing, the critical work completed by F-35 test teams cleared the way for the Block 3F capability to be delivered to the operational warfighter. More than a thousand SDD flight test engineers, maintainers, pilots and support personnel took the three variants of the F-35 to their full flight envelope to test aircraft performance and flying qualities. The test team conducted 6 at-sea detachments and performed more than 1,500 vertical landing tests on the F-35B variant. The developmental flight test team completed 183 Weapon Separation Tests; 46 Weapons Delivery Accuracy tests; 33 Mission Effectiveness tests, which included numerous multi-ship missions of up to eight F-35s against advanced threats.

“The F-35 flight test program represents the most comprehensive, rigorous and the safest developmental flight test program in aviation history,” said Greg Ulmer, Lockheed Martin’s vice president and general manager of the F-35 program. “The joint government and industry team demonstrated exceptional collaboration and expertise, and the results have given the men and women who fly the F-35 great confidence in its transformational capability.”

Developmental flight test is a key component of the F-35 program’s SDD phase, which will formally be completed following an Operational Test and Evaluation and a Department of Defense decision to go into full-rate aircraft production.

While SDD required flight test is now complete, F-35 flight testing continues in support of phased capability improvements and modernization of the F-35 air system. This effort is part of the Joint Program Office’s Continuous Capability Development and Delivery (C2D2) framework, which will provide timely, affordable incremental warfighting capability improvements to maintain joint air dominance against evolving threats to the United States and its allies.

With stealth technology, advanced sensors, weapons capacity and range, the F-35 is the most lethal, survivable and connected fighter aircraft ever built. More than a fighter jet, the F-35’s ability to collect, analyze and share data is a powerful force multiplier that enhances all airborne, surface and ground-based assets in the battlespace and enables men and women in uniform to execute their mission and return home safe.


(EDITOR’S NOTE: It should be noted that the end of the flight test program does not mean the end of the SDD phase, which will not be formally completed until the Milestone C decision on full-scale production.

Milestone C cannot be reached until the end of the Initial Operational Test and Evaluation (IOT&E), which will probably not begin before late 2018 or early 2019.

It also should be noted that the Block 4 upgrade, which is necessary to bring the aircraft up to the capability level originally defined in the 2001 development contract, was originally part of the SDD phase, but was broken out as a separate phase (now called Continuous Capability Development and Delivery, or C2D2) when the program was re-baselined in 2010.

In other words, the Joint Program Office has continued to move the goalposts to accommodate the program’s delays, most recently by watering down the software requirements.

This was exposed in some detail yesterday by The Drive, which began its story by reminding readers that,
“as with anything relating to the Joint Strike Fighter, this announcement comes with significant caveats and amid new controversies, including that the Joint Program Office deleted a number of test points in order to meet its goals and still couldn't meet a much revised schedule.”)

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F-35 Completes Most Comprehensive Flight Test Program in Aviation History
(Source: Lockheed Martin; issued April 12, 2018)
NAS PATUXENT RIVER, Md. --- The F-35 program has accomplished the final developmental test flight of the System Development and Demonstration (SDD) phase of the program.

"Completing F-35 SDD flight test is the culmination of years of hard work and dedication from the joint government and industry team," said Vice Adm. Mat Winter, F-35 Program Executive Officer. "Since the first flight of AA-1 in 2006, the developmental flight test program has operated for more than 11 years mishap-free, conducting more than 9,200 sorties, accumulating over 17,000 flight hours, and executing more than 65,000 test points to verify the design, durability, software, sensors, weapons capability and performance for all three F-35 variants. Congratulations to our F-35 Test Team and the broader F-35 Enterprise for delivering this new powerful and decisive capability to the warfighter."

The final SDD flight occurred April 11 at Naval Air Station Patuxent River, Maryland., when Navy test aircraft CF-2 completed a mission to collect loads data while carrying external 2,000-pound GBU-31 Joint Direct Attack Munitions (JDAM) and AIM-9X Sidewinder heat-seeking missiles.

From flight sciences to mission systems testing, the critical work completed by F-35 test teams cleared the way for the Block 3F capability to be delivered to the operational warfighter. More than 1,000 SDD flight test engineers, maintainers, pilots and support personnel took the three variants of the F-35 to their full flight envelope to test aircraft performance and flying qualities. The test team conducted six at-sea detachments and performed more than 1,500 vertical landing tests on the F-35B variant.

The developmental flight test team completed 183 Weapon Separation Tests; 46 Weapons Delivery Accuracy tests; 33 Mission Effectiveness tests, which included numerous multi-ship missions of up to eight F-35s against advanced threats.

"The F-35 flight test program represents the most comprehensive, rigorous and the safest developmental flight test program in aviation history," said Greg Ulmer, Lockheed Martin's vice president and general manager of the F-35 program. "The joint government and industry team demonstrated exceptional collaboration and expertise, and the results have given the men and women who fly the F-35 great confidence in its transformational capability."

Developmental flight test is a key component of the F-35 program's SDD phase, which will formally be completed following an Operational Test and Evaluation and a Department of Defense decision to go into full-rate aircraft production.

While SDD required flight test is now complete, F-35 flight testing continues in support of phased capability improvements and modernization of the F-35 air system. This effort is part of the Joint Program Office's Continuous Capability Development and Delivery (C2D2) framework, which will provide timely, affordable incremental warfighting capability improvements to maintain joint air dominance against evolving threats to the United States and its allies.

With stealth technology, advanced sensors, weapons capacity and range, the F-35 is the most lethal, survivable and connected fighter aircraft ever built. More than a fighter jet, the F-35's ability to collect, analyze and share data is a powerful force multiplier that enhances all airborne, surface and ground-based assets in the battlespace and enables men and women in uniform to execute their mission and return home safe.


Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that employs approximately 100,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services.

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