# Proposed AD FAA-2016-9553: Rolls-Royce Corporation Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-11-05
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 22, 2017, 82 FR 11327
- Comments due: April 10, 2017
- Became: [AD 2017-11-05](https://openairdocs.org/ad/2017-11-05)
- Docket: FAA-2016-9553 (https://www.regulations.gov/docket/FAA-2016-9553, where comments are filed)
- Project: 2016-NE-29-AD
- FR document: 2017-03283
- Official PDF: https://openairdocs.org/files/sha256/dc/f9/dcf9cdd8697f466921ce0fbbb124de16ddf2e072938a6bb751f422cc0b874b0d (from https://www.govinfo.gov/content/pkg/FR-2017-02-22/pdf/2017-03283.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/02/22/2017-03283/airworthiness-directives-rolls-royce-corporation-turbofan-engines
- Page: https://openairdocs.org/proposed/FAA-2016-9553

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Rolls-Royce Corporation (RRC) AE 3007C and 3007C1 model turbofan engines. This proposed AD was prompted by analysis and by cracks found in the high-pressure turbine (HPT) wheel during an inspection. This proposed AD would require replacement of the affected HPT wheels at new, lower life limits. We are proposing this AD to correct the unsafe condition on these products.

## Notices in this docket

- Feb 22, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-03283, comments due Apr 10, 2017 (https://www.federalregister.gov/documents/2017/02/22/2017-03283/airworthiness-directives-rolls-royce-corporation-turbofan-engines)

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