Additional fundingwill be requiredto support the revised
FMOF scheduleand allow the most expeditiouscompletionof the Shuttle's
design,developmenttest and evaluationprogram. These funding re-
quirementsare not due to any single programelement, but are due to
several items, includingthe main engines, solid rocket boosters, exter-
nal tank and thermal protectionsystem. Generally,more work has been
found necessary than was originallyestimated.
Shuttle developmentfunding requiredin FY 1979 and FY 1980
exceeds previousplans. Our current estimateof the total Shuttle
developmentcosts is 8 - 9 per cent higher than the early estimate
of $5.2 billion (1971 dollars).
The funding situationhas been discussedwith OMB and will be
consideredin the process of formulatingthe FY 1980 NASA budget.
NASA is reviewing,togetherwith the Departmentof Defense,the
potentialimpact if additionalShuttle developmentfunds are not availablein FY 1979.
Our preliminary8ssessmentsshow that the first manned orbital
flight would be delayed an additionalsix to nine months over the
above-estimatedSeptemberdate and that deliveryof production
orbiterswould be delayed up to one year.
Copies of Yardley'scomplete statementpreparedfor the
House subcommitteeare availablefrom the NASA newsroom,NASA
Headquarters,400 MarylandAvenue, S.W., Room 6043, Washington,D.C. 20546.