UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

Filed by the Registrant   o

Filed by a Party other than the Registrant   x

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Preliminary Proxy Statement

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Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

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Definitive Proxy Statement

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Definitive Additional Materials

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Soliciting Material Pursuant to §240.14a-12

HEXCEL CORPORATION

(Name of Registrant as Specified In Its Charter)

O.S.S. CAPITAL MANAGEMENT LP

OSCAR S. SCHAFER & PARTNERS I LP

OSCAR S. SCHAFER & PARTNERS II LP

O.S.S. OVERSEAS FUND LTD.

O.S.S. ADVISORS LLC

SCHAFER BROTHERS LLC

OSCAR S. SCHAFER

PETER J. GRONDIN

EDWARD A. BLECHSCHMIDT

TIMOTHY D. LEULIETTE

JOACHIM V. HIRSCH

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

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