# AD-2025-01606-E; Pratt & Whitney Division Model PW4074D, PW4077D, PW4084D, PW4090, and PW4090-3 engines; high-pressure compressor (HPC) drum rotor disk assemblies

> **FAA** · Rulemaking · Modified 2026-05-08T19:02:12Z

## Docket
- **Docket ID:** FAA-2026-2724
- **Agency:** FAA
- **Type:** Rulemaking
- **Last modified:** 2026-05-08T19:02:12Z

## Source
- [regulations.gov docket](https://www.regulations.gov/docket/FAA-2026-2724)
- [Public comments](https://www.regulations.gov/docket/FAA-2026-2724/comments)

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