Major Defense Acquisition Program (MDAP)

A major defense acquisition program, MDAP, is a US weapons program large enough, above a defined spending threshold, to trigger the most intensive level of oversight, review, and reporting in the acquisition system. The designation matters because it determines how much scrutiny a program receives, since the biggest and most expensive programs, the aircraft, ships, missiles, and systems that cost the most, are designated MDAPs and subjected to the rigorous oversight, reporting, and review that their scale and cost warrant, so the MDAP label marks a program as one of the major, most-scrutinized efforts in defense acquisition, carrying the requirements and attention that come with being a large, expensive, high-stakes program. Understanding the MDAP designation illuminates how the defense acquisition system manages its biggest programs, the intensive oversight it applies to them, and the challenges of overseeing the large, complex, expensive programs that MDAPs are.

What being an MDAP means

Being designated a major defense acquisition program subjects a program to the most intensive oversight and reporting requirements in the acquisition system, reflecting the scale, cost, and importance of these major programs. An MDAP, being above the spending threshold that defines it, is one of the largest and most expensive programs, so it receives the highest level of oversight, with rigorous review at the major milestones that mark its progress, extensive reporting requirements that track its cost, schedule, and performance, and the attention of senior acquisition officials and Congress, all aimed at overseeing the major program and holding it accountable for its cost, schedule, and performance. The reporting requirements are significant, since MDAPs must report regularly on their status, and the requirement to report cost growth is particularly important, since a major program that overruns its cost baseline by defined amounts triggers the Nunn-McCurdy provisions, requiring notification of Congress and, for large overruns, a justification for why the program should continue, a mechanism that forces accountability for the cost growth that afflicts many major programs. This intensive oversight reflects the stakes of the major programs, since MDAPs involve enormous sums and provide critical capabilities, so their cost, schedule, and performance matter greatly, and the oversight aims to manage these major programs effectively, catching and addressing the problems, the cost growth, schedule delays, and performance shortfalls, that major programs are prone to. The MDAP designation thus marks a program as a major, high-stakes effort subject to the most intensive oversight, and it shapes how the program is managed and scrutinized, subjecting it to the rigorous review, reporting, and accountability that its scale and cost warrant, so that the designation determines the level of attention and control applied to the program, marking it as one of the major programs that the acquisition system oversees most closely.

The oversight applied to major defense acquisition programs reflects the persistent challenges of managing large, complex, expensive programs, particularly the cost growth, schedule delays, and performance problems that afflict many MDAPs. The major programs are difficult to manage well, since they are large, complex, and technically ambitious, involving the development and production of sophisticated systems over many years at enormous cost, and this difficulty produces the recurring problems that the oversight aims to catch and address, the cost overruns that push programs over their baselines, the schedule delays that push back the delivery of capabilities, and the performance shortfalls where systems fail to meet their requirements, problems that afflict many major programs despite the oversight. The history of major programs is full of these problems, of programs that overran their costs enormously, fell years behind schedule, and struggled with technical difficulties, the F-35 being a prominent recent example of a major program that overran its cost, fell behind schedule, and encountered serious technical problems, illustrating the challenges of managing the major, ambitious programs that MDAPs are. The oversight applied to MDAPs, the rigorous review, reporting, and accountability mechanisms like Nunn-McCurdy, aims to manage these challenges, catching and addressing the problems and holding the programs accountable, but the persistence of cost growth, delays, and performance problems in major programs shows that oversight, while important, does not eliminate the difficulties of managing large, complex programs, so the challenges endure despite the intensive oversight. These challenges reflect the fundamental difficulty of the major programs, the difficulty of developing and fielding sophisticated systems on schedule and budget, a difficulty that the oversight manages but does not solve, so major defense acquisition programs continue to struggle with cost growth, delays, and performance problems despite the intensive oversight applied to them, illustrating both the importance of the oversight in managing and holding accountable the major programs and the limits of oversight in overcoming the fundamental challenges of developing and fielding complex, expensive systems, which persist as the enduring difficulties of major defense acquisition.

The MDAP in the acquisition system

Major defense acquisition programs are the largest and most important programs in the defense acquisition system, providing the major capabilities and consuming the large sums that make them central to the system and to defense spending. The MDAPs are the programs that develop and produce the major systems, the aircraft, ships, missiles, and other systems that provide the core capabilities of the military, so they are central to what the military acquires and to its capabilities, and they consume large portions of the acquisition budget, making them central to defense spending as well. The management of the MDAPs, therefore, is central to the effectiveness of defense acquisition, since these major programs provide the key capabilities and consume the large sums, so how well they are managed, whether they deliver their capabilities on schedule and budget or overrun and struggle, significantly affects the military's capabilities and the value obtained from defense spending. The intensive oversight applied to MDAPs reflects their centrality, aiming to manage the major programs effectively so that they deliver their important capabilities without the excessive cost growth, delays, and performance problems that would waste resources and delay capabilities, though the persistence of these problems shows the difficulty of achieving this. The challenges of managing MDAPs, and the efforts to improve their management through the oversight and through reforms to the acquisition system, are a continuing concern, since the effective management of the major programs is so important to the military's capabilities and to the value obtained from defense spending, so the acquisition system continually seeks to manage its major programs better, to catch and address their problems and to deliver their capabilities more effectively and affordably. The MDAP designation, marking the major programs and subjecting them to the intensive oversight, is part of this effort to manage the major programs, identifying them as the high-stakes efforts that warrant the most scrutiny and applying the oversight aimed at managing them effectively, so the designation and the oversight it triggers are central to how the defense acquisition system manages its most important and expensive programs, the major defense acquisition programs that provide the core capabilities and consume the large sums, and whose effective management is so important to the military's capabilities and to the value obtained from the enormous investment in defense acquisition.

Why do so many major defense programs run over budget and behind schedule?

Major defense programs run over budget and behind schedule so often because they are large, complex, and technically ambitious, and several structural factors, including optimistic estimating, requirements changes, and the difficulty of developing cutting-edge systems, drive the cost growth and delays. The major programs are inherently difficult, since they develop and produce sophisticated, cutting-edge systems over many years, pushing the boundaries of technology, which makes them prone to the technical difficulties, the unforeseen problems, and the challenges of developing advanced systems that drive cost and delay, so the fundamental difficulty of the ambitious programs is a basic cause of their overruns and delays. Optimistic cost and schedule estimating contributes, since programs are often estimated optimistically at the start, partly because an honestly estimated program might not be approved, so the initial estimates understate the likely cost and time, and the programs then overrun these optimistic baselines as the real cost and time prove greater, a pattern that recurs across major programs. Requirements changes drive cost and delay, since the requirements for a program often change and grow after it starts, as the customer adds capabilities or changes what is wanted, and these requirements changes, the requirements creep that afflicts many programs, add cost and time as the program adapts to the changing requirements, pushing it over its baselines. Concurrency, starting production before development and testing are complete, drives cost when the testing reveals problems that require expensive changes to systems already being produced, a common source of cost growth in major programs. These factors, the fundamental difficulty of the ambitious programs, the optimistic estimating, the requirements changes, and the concurrency, combine to drive the cost growth and delays that afflict so many major programs, so that the overruns and delays are not merely the result of poor management, though management matters, but of structural factors inherent in the way major programs are estimated, approved, and executed, factors that the oversight aims to manage but that persist as the recurring causes of the cost growth and delays in major defense programs, making the overruns and delays a persistent feature of major defense acquisition that reflects the fundamental difficulty of developing and fielding complex, expensive, cutting-edge systems and the structural factors, from optimistic estimating to requirements creep, that drive their cost and schedule beyond the baselines set for them.