長榮航太科技股份有限公司 (Evergreen Aviation Technologies Corp, EGAT) 是長榮集團旗下專業的飛機維修與航太製造公司，總部位於台灣桃園。公司於 1997 年 11 月成立，前身為長榮航空的機務本部，並於 1998 年 9 月正式改制為獨立公司。EGAT 於 2023 年 3 月正式在台灣證券交易所掛牌上市 (股票代號：2645)，成為長榮集團旗下第六家上市公司。
EGAT 是長榮航空與美國奇異公司 (GE) 合資成立的公司，致力於提供高品質的飛機維修與製造服務。EGAT有兩大事業體：分別為維修事業體與製造事業體，核心業務涵蓋以下幾個領域：
- 飛機維修 (MRO) 服務
提供機體、發動機及零組件的維修與翻新服務，並獲得美國聯邦航空總署 (FAA)、歐洲航空安全局 (EASA) 等國際認證 。EGAT 也與美國 Spirit Aerosystems 合資成立長銳航材公司，負責複合材維修。延伸閱讀：《知識》航空產業 MRO 介紹 Introduction to MRO in the Aviation Industry - 飛機改裝工程
最著名的案例是承接波音 747-400 LCF (大型貨機) 的改裝工程，展現其在特殊用途飛機改裝方面的專業能力。 - 零組件製造與組裝
在桃園觀音工業區設有製造廠，專注於航空零組件的製造與組裝，致力於成為一站式整合服務供應商。 - 發動機維修
與美國奇異公司 GE 合資成立長異發動機維修公司，專門維修新型 GEnx 發動機，提升在發動機維修領域的競爭力。
EGAT 服務超過 40 家航空公司，包括達美航空、越南航空、印尼鷹航等知名航空公司。此外，公司積極開發新機型，如 B737 MAX、A350的維修能力，以應對市場需求的變化。EGAT 的飛機維修產值，為全球前十大專業維修廠之一，促成來自世界各地的維修業務。
關於 EGAT 成立的故事，可以從長榮集團創辦人、已故總裁張榮發講起。張榮發是海運起家，年輕時從船員開始做起，深感一艘好開的貨櫃船，後勤的維修作業舉足輕重不能馬虎。因此在長榮航空創立初期時，張榮發認為飛機要自己維修才安心的理念，掌握維修才能掌握飛安，於是設立機務本部，考察幾間國際飛機維修公司，就投資 30 幾億元設立最高規格的飛機維修中心。長榮航空以良好飛安紀錄著稱，與 EGAT 有密切關係。EGAT 全程維修長榮航、立榮航空旗下所有飛機，掌握每一架飛機的狀況，哪一架可以出勤的調派任務由 EGAT 擔綱。
EGAT 為波音公司飛機主結構件的供應者，提供各種機型零組件的全製程服務，是波音重要供應商夥伴，維修及製造實力獲原廠高度肯定。EGAT 也於 2025 年 5 月與歐洲空中巴士飛機公司完成雙方合作合約簽署，成為空中巴士在機體組件的一階供應商，在業務及製造技術上建立直接性的夥伴關係。
EGAT 也轉投資未來前景可期的相關事業，以及與艾姆勒車電、匯鑽科技合資成立長鑽科技，負責電動車用零組件表面化學處理。儘管車用相關無需航太產業嚴格的認證規定，但仍需取得原車廠的認證許可，合作品牌主要是日系和歐系車廠。
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Introduction to Evergreen Aviation Technologies Corp (EGAT)
Evergreen Aviation Technologies Corp. (EGAT) is a professional aircraft maintenance and manufacturing company under the Evergreen Group, headquartered in Taoyuan, Taiwan. The company was founded on November 10, 1997, originally as the Maintenance Division of EVA Air. In September, 1998, it was officially restructured into an independent company. EGAT went public on the Taiwan Stock Exchange (stock code: 2645) In March, 2023, becoming the sixth listed company under the Evergreen Group.EGAT is a joint venture between EVA Air and General Electric (GE) from the United States. It is committed to providing high-quality aircraft maintenance and manufacturing services. EGAT has two main business units: Maintenance and Manufacturing, with core services in the following areas:
Aircraft Maintenance (MRO) Services
EGAT offers maintenance and overhaul services for aircraft bodies, engines, and components, and is certified by international authorities such as the U.S. FAA and Europe’s EASA. EGAT also has a joint venture with Spirit AeroSystems in the U.S. to repair composite materials. Read More: Introduction to MRO in the Aviation Industry
Aircraft Conversion Projects
One of EGAT’s most notable projects was converting Boeing 747-400 aircraft into Large Cargo Freighters (LCFs), demonstrating expertise in modifying aircraft for special purposes.
One of EGAT’s most notable projects was converting Boeing 747-400 aircraft into Large Cargo Freighters (LCFs), demonstrating expertise in modifying aircraft for special purposes.
Component Manufacturing and Assembly
EGAT has a manufacturing plant in the Guanyin Industrial Zone in Taoyuan, focusing on producing and assembling aircraft parts. The company aims to be a one-stop integrated service provider.
EGAT has a manufacturing plant in the Guanyin Industrial Zone in Taoyuan, focusing on producing and assembling aircraft parts. The company aims to be a one-stop integrated service provider.
Engine Maintenance
EGAT formed a joint venture with GE to establish GE Evergreen Engine Services, specializing in maintaining GEnx engines and enhancing its competitiveness in engine maintenance.
EGAT formed a joint venture with GE to establish GE Evergreen Engine Services, specializing in maintaining GEnx engines and enhancing its competitiveness in engine maintenance.
EGAT serves over 40 airlines worldwide, including Delta Air Lines, Vietnam Airlines, and Garuda Indonesia. The company is also developing maintenance capabilities for new aircraft types like the B737 MAX and A350 to meet changing market demands. EGAT ranks among the world’s top 10 professional aircraft maintenance companies, attracting maintenance business from around the globe.
The story of EGAT’s founding traces back to the late Evergreen Group founder, Chang Yung-Fa. Chang started in the shipping industry as a young seafarer and learned that a well-maintained cargo ship requires thorough and reliable maintenance. When founding EVA Air, he believed that maintaining aircraft in-house ensured better safety, so he established the Maintenance Division. After studying leading international aircraft maintenance companies, he invested more than NT$3 billion to build a top-level maintenance center. EVA Air is known for its excellent safety record, thanks in part to its close relationship with EGAT. EGAT fully maintains all aircraft operated by EVA Air and UNI Air, tracking each plane’s condition and deciding which aircraft are ready for operation.
EGAT is also a key supplier of major aircraft structures to Boeing, providing full-process production services for various aircraft parts. Boeing recognizes EGAT as an important supplier partner for both maintenance and manufacturing. In May 2025, EGAT signed a cooperation agreement with Airbus, becoming a Tier-1 supplier of aircraft structures and building a direct partnership in both business and manufacturing technology.
EGAT has also invested in related industries with promising futures. It co-founded Chang Drill Technology with Aimler Vehicle Power and HuiZuan Technology to provide surface chemical treatment for electric vehicle components. Although automotive parts do not require the same strict certifications as the aerospace industry, they must still be approved by the original car manufacturers. EGAT mainly collaborates with Japanese and European car brands.
