US Airways 2007 Annual Report Download - page 932

12.4 Interface Commitment
12.4.1 Interface Problem
If the Buyer experiences any technical problem in the operation of an Aircraft or its systems, the cause of which, after due and reasonable investigation, is
not readily identifiable by the Buyer, but which the Buyer reasonably believes to be attributable to the design characteristics of one or more components of
the Aircraft and/or its systems (an "Interface Problem"), the Seller will, if requested by the Buyer, and without additional charge to the Buyer, promptly
conduct or have conducted an investigation and analysis of such problem to determine, if possible, the cause or causes of the problem and to recommend
such corrective action as may be feasible, provided, however, that if the Seller determines, after such investigation, that the Interface Problem was due to
or caused by any act or omission of the Buyer in its performance of its obligations hereunder, the Buyer will pay to the Seller all reasonable costs and
expenses incurred by the Seller during such investigation. The Buyer will furnish to the Seller all data and information relevant to the Interface Problem in
its possession and will reasonably cooperate with the Seller in the conduct of the Seller's investigations and such tests as may be required. At the
conclusion of such investigation the Seller will promptly advise the Buyer in writing of the Seller's opinion as to the cause or causes of the Interface
Problem and the Seller's recommendations as to corrective action.
12.4.2 Seller's Responsibility
If the Seller determines that the Interface Problem is primarily attributable to the design of a Warranted Part, the Seller will, if requested by the Buyer, take
prompt action to correct the design of such Warranted Part, pursuant to the terms and conditions of Clause 12.1.
12.4.3 Supplier's Responsibility
If the Seller determines that the Interface Problem is primarily attributable to the design of any Supplier Part, the Seller will at the Buyer's request, assist
the Buyer in processing any warranty claim the Buyer may have against the manufacturer of such Supplier Part. **
12.4.4 Joint Responsibility
If the Seller determines that the Interface Problem is attributable partially to the design of a Warranted Part and partially to the design of any Supplier Part,
the Seller will, if requested by the Buyer, seek a solution to the Interface Problem through cooperative efforts of the Seller and any Supplier(s) involved.
The Seller will promptly advise the Buyer of any corrective action proposed by the Seller
USA — Amended and Restated Airbus A350 XWB Purchase Agreement PA — 54 of 109
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