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Interpretation ID: aiam2704

Mr. Stanley Brajer, Project Engineer, Ellcon National, Inc., P.O. Box 307, Totowa, NJ 07512; Mr. Stanley Brajer
Project Engineer
Ellcon National
Inc.
P.O. Box 307
Totowa
NJ 07512;

Dear Mr. Brajer: This responds to your September 2, 1977, letter concerning th applicability of Standard No. 217, *Bus Window Retention and Release*, to a thermopane driver's window in a bus.; In response to your first question, the window to which you refer i required to comply with the requirements of the standard. The fact that it is a driver's window does not exempt it from the coverage of the standard.; Your second question asks how to test thermopane glazing. According t our enforcement staff, testing of thermopane windows can be conducted using the same criteria used for other window glazing. By following the procedures established in S5.1 of the standard, you should be able to accurately test thermopane glazing.; Sincerely, Joseph J. Levin,Jr., Chief Counsel