Interpretation ID: nht87-3.27

TYPE: INTERPRETATION-NHTSA

DATE: 11/16/87

FROM: GLENN L. DUNCAN -- THORNE GRODNIK AND RANSEL

TO: ERICA Z. JONES -- CHIEF COUNSEL, NHTSA

TITLE: FMVSS 207 SEATING SYSTEM

ATTACHMT: ATTACHED TO LETTER DATED 08/16/88, TO GLENN L. DUNCAN FROM ERIKA Z. JONES, REDBOOK A32, STANDARD 207; LETTER DATED 08/30/79 TO ROBERT J. WAHLS FROM FRANK A. BERNDT; LETTER DATED 04/28/77 TO GORDON P. CRESS FROM FRANK A. BERNDT, STANDARD 210; LE TTER DATED 02/01/88 TO ERICA Z. JONES FROM GLENN L. DUNCAN RE UNITED TOOL AND STAMPING INC FMVSS 207 SEATING SYSTEM

TEXT: Dear Ms. Jones:

The undersigned represents United Tool and Stamping, Inc., a component supplier for seating systems used in motor vehicles, particularly recreational vehicles (motor homes). FMVSS 207 establishes a standard or performance requirements, using terminology such as "failure" or "shall withstand the following forces". My question is, what is NHTSA's current interpretation of what constitutes a "failure" or inability to "withstand forces".

It is my understanding from talking with various engineers, including Mr. Stan Fray from TRC of Ohio, who I understand performs some testing for NHTSA, that the currently accepted level of performance or definition of failure is that the seat must not se parate from the floor when the test forces are applied, although it may bend or deform. To state it another way, the seat may give, but must not break free from the floor.

Miss Diedre Hahn has indicated the proper way to obtain the answer to this question is to supply you with the question in writing. I would appreciate a response at your earliest possible convenience.

Respectfully,