Totals and company lists below filtered for North America only. Adjust site filter for other regions.
Variants: PW4074, PW4077, PW4077D, PW4084, PW4084D, PW4090, PW4090-3, PW4090D, PW4098
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| U.S.A. | Pratt & Whitney |
| U.S.A. | Delta TechOps , HAECO Americas , HAECO Global Engine Support (Dallas) , MTU Maintenance Dallas |
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