<PAGE>
FILED PURSUANT TO RULE 424(b)(3)
REGISTRATION NO. 333-23355
SUPPLEMENT NO. 3 DATED SEPTEMBER 30, 1997
TO PROSPECTUS DATED JUNE 13, 1997
RELATING TO $98,000,000 PRINCIPAL AMOUNT
6% CONVERTIBLE SUBORDINATED NOTES DUE 2003 AND
4,286,964 SHARES OF COMMON STOCK, $0.01 PAR VALUE PER SHARE, OF
OFFSHORE LOGISTICS, INC.
All capitalized terms used but not defined herein shall have the meanings
prescribed in the Prospectus dated June 13, 1997, forming a part of the
Registration Statement on Form S-3, File No. 333-23355. Any cross references in
this Supplement refer to portions of the Prospectus.
The purpose of this supplement is to provide additional information
regarding the Selling Securityholders. In addition to the Selling
Securityholders named in the Prospectus or any previously filed Supplement
thereto, the following table sets forth the name of each additional Selling
Securityholder and relationship, if any, with the Company and, with respect to
certain previously listed Selling Securityholders, the table sets forth revised
information and (i) the amount of Notes owned by each listed Selling
Securityholder as of September 29, 1997 (subject to the qualification set forth
below), (ii) the maximum amount of Notes which may be offered for the account of
such Selling Securityholder as of September 29, 1997 and (iii) the maximum
amount of Common Stock which may be offered for the account of such Selling
Securityholder under the Prospectus.
<TABLE>
<CAPTION>
PRINCIPAL
PRINCIPAL AMOUNT OF COMMON STOCK COMMON STOCK
NAME OF SELLING AMOUNT OF NOTES OFFERED OWNED PRIOR TO OFFERED
SECURITYHOLDER NOTES OWNED HEREBY OFFERING (1) HEREBY (2)
<S> <C> <C> <C> <C>
A. C. Convertible Sec. $ 400,000 $ 400,000 17,497 17,497
American Cap Harbor Fund 2,100,000 2,100,000 91,863 91,863
Chrysler Corporation Master Retirement Fund 2,500,000 2,500,000 109,361 109,361
Credit Suisse First Boston Corporation 675,000 675,000 29,527 29,527
Goldman, Sachs & Co. 1,000,000 1,000,000 43,744 43,744
Paloma Securities L.L.C.(3) 535,000 535,000 23,403 23,403
Partner Reinsurance Company Ltd.(4) 165,000 165,000 7,217 7,217
Silverton International Fund Ltd. 365,000 365,000 15,966 15,966
Smith Barney Inc. 1,000,000 1,000,000 43,744 43,744
State of Connecticut Combined
Investment Funds(5) 500,000 500,000 21,872 21,872
---------- ---------- ---------- ----------
TOTAL................................... $9,240,000 $9,240,000 404,194 404,194
========== ========== ========== ==========
</TABLE>
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(1) Comprises the shares of Common Stock into which the Notes held by such
Selling Securityholder are convertible at the initial conversion rate. The
Conversion Price and the number of shares of Common Stock issuable upon
conversion of the Notes are subject to adjustment under certain
circumstances. See "Description of Notes -- Conversion Rights."
Accordingly, the number of shares of Common Stock issuable upon conversion
of the Notes may increase or decrease from time to time.
(2) Assumes conversion into Common Stock of the full amount of Notes held by
the Selling Securityholder at the initial conversion price and the offering
of such shares by such Selling Securityholder pursuant to the Registration
Statement of which the Prospectus forms a part. The Conversion Price and
the number of shares of Common Stock issuable upon conversion of the Notes
are subject to adjustment under certain circumstances. See "Description of
Notes -- Conversion Rights." Accordingly, the number of shares of Common
Stock issuable upon conversion of the Notes may increase or decrease from
time to time. Fractional shares will not be issued upon conversion of the
Notes; rather, cash will be paid in lieu of fractional shares, if any.
(3) Reflects the sale of $500,000 principal amount of the Notes previously
listed under "Selling Securityholders" and the purchase of an additional
$535,000 principal amount of the Notes.
(4) Reflects the sale of $90,000 principal amount of the Notes previously
listed under "Selling Securityholders" and the purchase of an additional
$100,000 principal amount of the Notes.
(5) Reflects the sale of $500,000 principal amount of the Notes previously
listed under "Selling Securityholders" and the purchase of an additional
$500,000 principal amount of the Notes.
Because the Selling Securityholders may, pursuant to this Prospectus, offer
all or some portion of the Notes they presently hold, no estimate can be given
as to the amount of the Notes that will be held by the Selling Securityholders
upon termination of any such sales. In addition, the Selling Securityholders
identified above may have sold, transferred or otherwise disposed of all or a
portion of their Notes since the date on which they provided the information
regarding their Notes, in transactions exempt from the registration requirements
of the Securities Act. See "Plan of Distribution."
The Company may from time to time, in accordance with the Registration
Rights Agreement, include additional Selling Securityholders in future
supplements to the Prospectus.
