# Proposed AD FAA-2018-0920: Pratt & Whitney Division Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-06-07
- Products: Pratt & Whitney Division
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 19, 2018, 83 FR 58194
- Comments due: January 3, 2019
- Became: [AD 2019-06-07](https://openairdocs.org/ad/2019-06-07)
- Docket: FAA-2018-0920 (https://www.regulations.gov/docket/FAA-2018-0920, where comments are filed)
- FR document: 2018-24965
- Official PDF: https://openairdocs.org/files/sha256/28/a8/28a8064958d3a82347fce442a7891c0116f1c37885691f79771dfae9157816f6 (from https://www.govinfo.gov/content/pkg/FR-2018-11-19/pdf/2018-24965.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/11/19/2018-24965/airworthiness-directives-pratt-and-whitney-division-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EDAF2706823BF1AF8625834B005C93F2.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0920

## Summary

We propose to supersede Airworthiness Directive (AD) 2016-22- 05, which applies to certain Pratt & Whitney Division (PW) PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, and PW4170 turbofan engines. AD 2016-22-05 requires initial and repetitive inspections of the affected fuel nozzles and their replacement with parts eligible for installation. Since we issued AD 2016-22-05, PW introduced newly forged fuel nozzles, fuel manifold brackets, and clamps. This proposed AD would require initial and repetitive inspections of the affected fuel nozzles and fuel nozzle supply manifold assemblies, replacement of the affected fuel nozzles with parts eligible for installation, and the installation of new brackets and clamps on the fuel supply manifold assemblies with parts eligible for installation. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 19, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-24965, comments due Jan 3, 2019 (https://www.federalregister.gov/documents/2018/11/19/2018-24965/airworthiness-directives-pratt-and-whitney-division-turbofan-engines)

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