Transcript of Hearing 12/12/97 - TWA Flight 800 Investigation

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$Atago Co., Ltd. Salinity Refractometer, Model S-10 Instruction Manual$

1309123on the environment of the 747 center wing tank and thesurrounding components that might transfer heat to thistank?4WITNESS THOMAS:I would say we have a very5good understanding of this at this point.67DR. ELLINGSTAD:WITNESS THOMAS:You say that we do?I quite believe we do.891011DR. ELLINGSTAD: So, you don’t believe thatthere are any additional flight tests, or on groundtests that would be useful to develop a betterunderstanding?12WITNESS THOMAS:I think at this point we1314have, as I said earlier, two computer models, one ofwhich is, quote/unquote, “a simple model” that allows15us to look at alternatives.We have a more161718192021sophisticated model that is a closer representation ofthe 747.As we try and develop alternative ideas suchas some kind of cooling system, we think we may findthat there is a part of the system where we need moredetailed information where we would have to go run that2223test,whether it is a ground test or a flight test.DR. ELLINGSTAD: Because, as that ––2425WITNESS THOMAS:development process.Part of that is just theCAPITAL HILL REPORTING, INC.(202) 466-9500
13101DR. ELLINGSTAD:Has any of that kind of234testing under operational environments been done on anyother aircraft in the Boeing fleet, other than this747?567WITNESS THOMAS:DR. ELLINGSTAD:WITNESS THOMAS:To develop temperature data?Yes.We have -- in the course of8910our investigation we took some very limited data offthe 737-700 because it was in flight test and we hadsome small instrumentation set up on that airplane.11DR. ELLINGSTAD:Okay, so Boeing doesn’t have12any ––13WITNESS THOMAS: We do not have a lot of --14DR. ELLINGSTAD:–– immediate plans to do any15additional testing in this area?1617WITNESS THOMAS:system we came up with.It would be a factor of whatIf we –– again, if the process1819202122we have described this morning of looking at what isthe requirements through the ARAC process, as we startseeing what solution we are going to go to, it willdrive us to do the testing we need to do to develop thesystem.23DR. ELLINGSTAD:Mr. McSweeney, do you feel2425that there is sufficient empirical data describing theoperating environment of the center wing tank in theCAPITAL HILL REPORTING, INC.(202) 466-9500
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1186BEFORE THENATIONAL TRANSPORTATI
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119112“The reticulate polyurethan
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1193123The Air Force developed this
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1195123QBY MR. ANDERSON:DIRECT EXAM
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1197123decision, and the decision w
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1directions.When the test in the Mo
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1CHAIRMAN HALL:1201I know that goes
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12031234What we will -- are expecti
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12051and then we will charter ARAC,
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120712CHAIRMAN HALL:MR. ANDERSON:Ge
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1WITNESS McSWEENEY:1209I would then
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12111234567several Airworthiness Di
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1213123There are many who have stud
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12151opinion.2WITNESS McSWEENEY:I w
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12171States.There are international
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121912from industry what kind of ti
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1AYou can be a member of the active
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12231reasons,like airline dispatch
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12251 MR. ANDERSON: I would like to
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1looking at inerting,1227looking at
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123will participate.WITNESS THOMAS:
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12CHAIRMAN HALL:specific informatio
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1233123of order here.WITNESS THOMAS
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1235123becomes an option that becom
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1so,in that regard it is very impor
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12electric pumps, or moving the --
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1WITNESS McSWEENEY:1241Well, whethe
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12431234require engineering and som
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124512345MR. SWAIM: Mr. McSweeney,
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124712eliminating.so, the key is, i
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12491will be at the ARAC.2so,we hav
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125112This remains an important con
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1unstable foam wandering around the
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1255123451, again, am very pleased
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12571234reduction must be in the ta
Page 74 and 75: 12591aircraft or a fleet, but money
Page 76 and 77: 12611234concept, and I was also ver
Page 78 and 79: 126312345FURTHER DIRECT EXAMINATION
Page 80 and 81: 1265123passed to an engineering soc
Page 82 and 83: 12671cancellations do not affect yo
Page 84: 12691The next thing, Mr. McSweeney,
Page 87 and 88: 127212effort and what is referred t
Page 89 and 90: 127412history that is most signific
Page 91 and 92: 127612said and written about the pr
Page 93 and 94: 1system was the right system to use
Page 95 and 96: 12801combat and heard the maintenan
Page 97 and 98: 12821MR. BALL:It is significantly c
Page 99 and 100: 128412345buying the C-130 J. It is
Page 101 and 102: 12861234567aircraft that have been
Page 103 and 104: 12881MR. STREETER:In the list you s
Page 105 and 106: 1290123obviously as the tank emptie
Page 107 and 108: 129212We discussed a little bit on
Page 109 and 110: 129412345and create the service bul
Page 111 and 112: 12961CHAIRMAN HALL: Well, thank you
Page 113 and 114: 1WITNESS TYSON:I am going to try to
Page 115 and 116: 13001234remediational technology in
Page 117 and 118: 130212and the FAA, they are working
Page 119 and 120: 130412middle of the summer and it i
Page 121 and 122: 13061MR. BOUSHIE:Crane has no quest
Page 123: 1308123is in order to respond to th
Page 127 and 128: 1Jet-A from LAX,1312and we have don
Page 129 and 130: 13141Mr. Thomas, is there anything
Page 131 and 132: 1316123causing me to do too many co
Page 133 and 134: 1effect,1318it is almost to the poi
Page 135 and 136: 1320123CHAIRMAN HALL: So, in other
Page 137 and 138: 1322123looking at the oxidizer and
Page 139 and 140: 13241234tell them over and over aga
Page 141 and 142: 132612quickly as we can as we run u
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Page 145 and 146: 13301opinion.We have thoroughly enj
Page 147 and 148: 13321234this opportunity to thank t
Page 149 and 150: 13341meeting, we can never be sure
Page 151 and 152: 1336123456received within the speci
Page 153: 1338123again thank C-Span for that
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Transcript of Hearing 12/12/97 - TWA Flight 800 Investigation

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