# Proposed AD FAA-2019-0394: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-22-05
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 28, 2019, 84 FR 30956
- Comments due: August 12, 2019
- Became: [AD 2019-22-05](https://openairdocs.org/ad/2019-22-05)
- Docket: FAA-2019-0394 (https://www.regulations.gov/docket/FAA-2019-0394, where comments are filed)
- FR document: 2019-13761
- Official PDF: https://openairdocs.org/files/sha256/26/8b/268b544aa5b4f1aeb284df739a9f39bfa46666e1b6ba60b4fa7b95287d23936e (from https://www.govinfo.gov/content/pkg/FR-2019-06-28/pdf/2019-13761.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/06/28/2019-13761/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B63F9583BCC61F55862584270051E7F1.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0394

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2017-23-06, which applies to certain General Electric Company (GE) CF34-8C1, CF34-8C5, CF34-8C5A1, and CF34-8C5B1 engines. AD 2017-23-06 requires an inspection of the bleed air manifold link rod assemblies and the supply, return, and drain fuel fittings on the operability bleed valve (OBV). Since the FAA issued AD 2017-23-06, the manufacturer developed improved inspection techniques and determined these inspections should be applied to additional engine models. This proposed AD would require repetitive inspections of the OBV fuel tubes, OBV bleed air manifold link rod assemblies, and the OBV fuel fittings and replacement of OBVs or related hardware that fail inspection. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 28, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-13761, comments due Aug 12, 2019 (https://www.federalregister.gov/documents/2019/06/28/2019-13761/airworthiness-directives-general-electric-company-turbofan-engines)

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