Letter to NASA Administrator Bolden from House Committee on Science, Space, and Technology Republicans, 27 August 2014
"Will NASA be able to fly the SLS for Exploration Mission-1 in calendar year 2017? If it will not, please explain what has changed since your testimony on April 24, 2013 and whether, during your testimony on March 27, 2014, you were aware that this flight could be delayed beyond calendar year 2017.
Do you stand by your testimony that stated "We have asked for.. .and stated over and over that this is the amount of money that we need to deliver the SLS on the date and time that we said, 2017 for the inaugural mission?" If you do not stand by this testimony, please explain what has changed and how you would update this testimony to more accurately reflect the program's schedule."
"According to the program's risk analysis, however, the agency's current funding plan for SLS may be $400 million short of what the program needs to launch by 2017."
"Moreover, NASA's estimates do not capture the cost of the second flight of the 70-metric ton vehicle during EM-2, the costs of development work that will be necessary to fly the increased 105- and 130-metric ton SLS capabilities, and the costs associated with legacy hardware that will be used for the Orion program. In contrast, best practices for cost estimation call for "cradle to grave" life cycle cost estimates in order to help assess a program's long-term affordability."