# Proposed AD FAA-2015-2984: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2016-04-11
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 27, 2015, 80 FR 51965
- Comments due: October 26, 2015
- Became: [AD 2016-04-11](https://openairdocs.org/ad/2016-04-11)
- Docket: FAA-2015-2984 (https://www.regulations.gov/docket/FAA-2015-2984, where comments are filed)
- Project: 2015-NE-21-AD
- FR document: 2015-21120
- Official PDF: https://openairdocs.org/files/sha256/80/9a/809a07200f11ed62611345756ac1407f5a27854dfc723aaec6212420ed093847 (from https://www.govinfo.gov/content/pkg/FR-2015-08-27/pdf/2015-21120.pdf)
- Federal Register: https://www.federalregister.gov/documents/2015/08/27/2015-21120/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BABE5ADBE6CF602486257EAE0047ACFD.0001
- Page: https://openairdocs.org/proposed/FAA-2015-2984

## Summary

We propose to adopt a new airworthiness directive (AD) for all General Electric Company (GE) GEnx-1B54, -1B58, -1B64, -1B67, and -1B70 turbofan engine models. This proposed AD was prompted by reports of two in-flight shutdowns (IFSDs) caused by high-pressure turbine (HPT) rotor stage 1 blade failure. This proposed AD would require inspection and conditional removal of affected HPT rotor stage 1 blades. We are proposing this AD to prevent failure of the HPT rotor stage 1 blades, which could lead to failure of one or more engines, loss of thrust control, and damage to the airplane.

## Notices in this docket

- Aug 27, 2015: Notice of proposed rulemaking (NPRM). (first notice), FR document 2015-21120, comments due Oct 26, 2015 (https://www.federalregister.gov/documents/2015/08/27/2015-21120/airworthiness-directives-general-electric-company-turbofan-engines)

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