Interpretation ID: 77-5.9

TYPE: INTERPRETATION-NHTSA

DATE: 12/21/77

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Office of Standards Enforcement

TITLE: FMVSS INTERPRETATION

TEXT: I have received your November 8, 1977, memorandum questioning the applicability of the performance requirements in Section S5.4 of Standard No. 217 to knock-out rear windows. You suggest that these requirements may apply only to push-out windows, not knock-out windows.

It is our interpretation that the requirements of the standard apply to both push-out and knock-out windows. We realize that this may create some difficulty for purposes of conducting compliance testing since knock-out windows must be reinstalled in order to conduct subsequent tests upon them. Nonetheless, the window should be required to comply with the standard.