Our Interior Systems segment was created with the acquisition of B/E Aerospace on April 13, 2017. Interior Systems supplies a comprehensive portfolio of cabin interior products and services to aircraft manufacturers and airlines worldwide. Beginning in 2018, thermal and electronic systems product lines previously included in Interior products and services within the Interior Systems segment are now being reported in the Government Systems segment. See the supplemental schedule included in this press release for revised fiscal year 2017 quarterly sales that conform to the current presentation. Results from the second quarter of 2018 are summarized below.

On a pro-forma basis, excluding the product lines now reported in Government Systems referenced above, sales for Interior Systems increased 9% in the second quarter compared to the same period in the prior year. The increase in pro-forma sales was primarily attributable to increased original equipment deliveries of oxygen systems, galleys and galley inserts across multiple platforms, as well as the timing of linefit seating deliveries, partially offset by a decline in super first class seating sales.

Government Systems provides a broad range of electronic products, systems and services to customers including the U.S. Department of Defense, other government agencies, civil agencies, defense contractors and ministries of defense around the world. Beginning in 2018, the product lines referenced above previously included in the Interior Systems segment are now being reported in Communication and navigation within the Government Systems segment. See the supplemental schedule included in this press release for revised fiscal year 2017 quarterly sales that conform to the current presentation. Results from the second quarter of 2018 are summarized below.

• Avionics sales decreased $8 million due primarily to lower simulation and training sales.
• Communication and navigation sales increased $75 million due to the B/E Aerospace acquisition mentioned above. In addition, communication and navigation sales increased 11% organically due to higher test and training range sales and higher deliveries of GPS-related products.
• Operating earnings increased $17 million and operating margin declined 20 basis points over the prior year as increased earnings from higher sales volume was unfavorably impacted by lower margins on B/E Aerospace thermal and electronic systems sales.

• IMS sales decreased primarily due to an 11% decline in non-aviation sales as a result of the completion of nuclear security mandate revenues. Aviation-related sales increased 3% primarily due to increased usage of connectivity services, partially offset by the absence of a bulk sale of connectivity related equipment that occurred in the prior year.
• IMS operating earnings and operating margin increased due to the favorable resolution of certain claims associated with a divested business, partially offset by the absence of the favorable resolution of certain international business jet support services claims in the prior year.

Income Taxes
The company's effective income tax rate on GAAP earnings was 22.5% for the second quarter of fiscal year 2018 compared to a rate of 27.9% for the same period last year. The lower current year effective income tax rate was primarily due to a lower U.S. Federal statutory tax rate from the enactment of the Tax Cuts and Jobs Act ("the Act") and benefits from the jurisdictional mix of income as a result of the B/E Aerospace acquisition, partially offset by an increase to income tax expense from the refinement of the provisional estimate established in the first quarter associated with the Act.

Cash Flow
Cash used for operating activities was $77 million for the first six months of fiscal year 2018, compared to cash provided by operating activities of $1 million in the first six months of fiscal year 2017. The increase in cash used for operating activities was due primarily to higher payments for production inventory and other operating costs, as well as higher employee incentive payments, partially offset by higher cash receipts from customers and lower income tax payments.

Conference Call
In light of the pending acquisition of Rockwell Collins by United Technologies Corporation ("UTC"), the Company will not hold a conference call for its quarterly results for the second quarter of fiscal year 2018. The Company plans to file its Form 10-Q for the second quarter with the SEC on or about April 27, 2018.

Rockwell Collins recognized as Crystal Cabin Award winner
The Crystal Cabin Award recognizes excellence in aircraft interior innovation. Rockwell Collins won 2018 Crystal Cabin awards in the Cabin Systems category for the Silhouette MOVE™, a revolutionary cabin divider for all aircraft platforms, and in the Passenger Comfort Hardware category for the Valkyrie™ bed, a business-class seating solution.

U.S. Air Force Space and Missile Systems Center orders 300 additional M-Code GPS receivers from Rockwell Collins
Rockwell Collins received a follow-on order for 300 Military Code GPS receivers from the U.S. Air Force Space and Missile Systems Center. The order comes after the recent fulfillment of 770 receivers in support of the Military GPS User Equipment program.

Rockwell Collins selected to streamline check-in and gate services at eight Mexican airports
Rockwell Collins' ARINC vMUSE™ Common Use Passenger Processing System was selected by Grupo Aeroportuario del Centro Norte to provide enhanced flexibility of airport resources and passenger check-in at eight Mexican airports.

Rockwell Collins selected by Brazilian Air Force to support flight operations
Grupo de Transporte Especial, the Special Transport Group of the Brazilian Air Force renewed its contract for Rockwell Collins' ARINCDirect^SM flight support services to cover its fleet of 13 aircraft.

About Rockwell Collins
Rockwell Collins (NYSE:COL) is a leader in aviation and high-integrity solutions for commercial and military customers around the world. Every day we help pilots safely and reliably navigate to the far corners of the earth; keep warfighters aware and informed in battle; deliver millions of messages for airlines and airports; and help passengers stay connected and comfortable throughout their journey. As experts in flight deck avionics, cabin electronics, cabin interiors, information management, mission communications, and simulation and training, we offer a comprehensive portfolio of products and services that can transform our customers' futures. To find out more, please visit www.rockwellcollins.com.

Safe Harbor Statement
This press release contains statements, including statements regarding certain projections, business trends and the proposed acquisition of Rockwell Collins by United Technologies that are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those projected as a result of certain risks and uncertainties, including but not limited to: the financial condition of our customers and suppliers, including bankruptcies; the health of the global economy, including potential deterioration in economic and financial market conditions; adjustments to the commercial OEM production rates and the aftermarket; the impacts of natural disasters and pandemics, including operational disruption, potential supply shortages and other economic impacts; cybersecurity threats, including the potential misappropriation of assets or sensitive information, corruption of data or operational disruption; delays related to the award of domestic and international contracts; delays in customer programs, including new aircraft programs entering service later than anticipated; the continued support for military transformation and modernization programs; potential impact of volatility in oil prices, currency exchange rates or interest rates on the commercial aerospace industry or our business; the impact of terrorist events, regional conflicts, or governmental sanctions on other nations on the commercial aerospace industry; changes in domestic and foreign government spending, budgetary, procurement and trade policies adverse to our businesses; market acceptance of our new and existing technologies, products and services; reliability of and customer satisfaction with our products and services; potential unavailability of our mission-critical data and voice communication networks; unfavorable outcomes on or potential cancellation or restructuring of contracts, orders or program priorities by our customers; recruitment and retention of qualified personnel; regulatory restrictions on air travel due to environmental concerns; effective negotiation of collective bargaining agreements by us, our customers, and our suppliers; performance of our customers and subcontractors; risks inherent in development and fixed-price contracts, particularly the risk of cost overruns; risk of significant reduction to air travel or aircraft capacity beyond our forecasts; our ability to execute to internal performance plans such as restructuring activities, productivity and quality improvements and cost reduction initiatives; achievement of B/E Aerospace integration and synergy plans; continuing to maintain our planned effective tax rates; our ability to develop contract compliant systems and products on schedule and within anticipated cost estimates; risk of fines and penalties related to noncompliance with laws and regulations including compliance requirements associated with U.S. Government work, export control, anticorruption and environmental regulations; risk of asset impairments; our ability to win new business and convert those orders to sales within the fiscal year in accordance with our annual operating plan; the uncertainties of the outcome of lawsuits, claims and legal proceedings; the ability of Rockwell Collins and United Technologies to receive the required regulatory approvals for the proposed acquisition of Rockwell Collins by United Technologies (and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the transaction) and to satisfy the other conditions to the closing of the transaction on a timely basis or at all; the occurrence of events that may give rise to a right of one or both of the parties to terminate the merger agreement; negative effects of the announcement or the consummation of the transaction on the market price of United Technologies and/or Rockwell Collins common stock and/or on their respective businesses, financial conditions, results of operations and financial performance; risks relating to the value of United Technologies's shares to be issued in the transaction, significant transaction costs and/or unknown liabilities; the possibility that the anticipated benefits from the proposed transaction cannot be realized in full or at all or may take longer to realize than expected; risks associated with third party contracts containing consent and/or other provisions that may be triggered by the proposed transaction; risks associated with transaction-related litigation; the possibility that costs or difficulties related to the integration of Rockwell Collins' operations with those of United Technologies will be greater than expected; the outcome of legally required consultation with employees, their works councils or other employee representatives; and the ability of Rockwell Collins and the combined company to retain and hire key personnel. There can be no assurance that the proposed acquisition will in fact be consummated in the manner described or at all. For additional information on identifying factors that may cause actual results to vary materially from those stated in forward-looking statements, see the reports of United Technologies and Rockwell Collins on forms 10-K, 10-Q and 8-K filed with or furnished to the SEC from time to time. These forward-looking statements are made only as of the date hereof.

Additional Information
In connection with the proposed transaction, United Technologies has filed a registration statement on Form S-4 (File No. 333-220883), which includes a prospectus of United Technologies and a proxy statement of Rockwell Collins (the "proxy statement/prospectus"), and each party will file other documents regarding the proposed transaction with the SEC. The proxy statement/prospectus was declared effective by the SEC and was mailed to Rockwell Collins shareowners. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS FILED THERETO) AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. Investors and security holders may obtain the proxy statement/prospectus free of charge from the SEC's website or from United Technologies or Rockwell Collins. The documents filed by United Technologies with the SEC may be obtained free of charge at United Technologies' website at www.utc.com or at the SEC's website at www.sec.gov. These documents may also be obtained free of charge from United Technologies by requesting them by mail at UTC Corporate Secretary, 10 Farm Springs Road, Farmington, CT, 06032, by telephone at 1-860-728-7870 or by email at [email protected]. The documents filed by Rockwell Collins with the SEC may be obtained free of charge at Rockwell Collins' website at www.rockwellcollins.com or at the SEC's website at www.sec.gov. These documents may also be obtained free of charge from Rockwell Collins by requesting them by mail at Investor Relations, 400 Collins Road NE, Cedar Rapids, Iowa 52498, or by telephone at 1-319-295-7575.

No Offer or Solicitation
This communication shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

Pre-production engineering costs include costs incurred during the development phase of a program in connection with long-term supply arrangements that contain contractual guarantees for reimbursement from customers. These costs are deferred in Inventories, net to the extent of the contractual guarantees and are amortized to customer-funded research and development expense within cost of sales over their estimated useful lives using a units-of-delivery method, up to 15 years.

Adjusted earnings per share is a non-GAAP metric and is believed to be useful to investors' understanding and assessment of our ongoing operations and performance of the B/E Aerospace acquisition, which occurred on April 13, 2017. Adjusted earnings per share excludes certain one-time and non-cash expenses that we believe are not indicative of our ongoing operating results. The Company believes these measures are important indicators of the Company's operations for purposes of period-to-period comparison of our operating results. The non-GAAP information is not intended to be considered in isolation or as a substitute for the related GAAP measures.

With the acquisition of B/E Aerospace in the third quarter of 2017, the Interior Systems segment was formed. Beginning in 2018, two B/E Aerospace product lines previously included in the Interior Systems segment are now being reported in the Government Systems segment. To further enhance comparability and analysis, the following table provides the revised presentation of Interior Systems and Government Systems segment sales, by quarter, for the year ended September 30, 2017.