# Proposed AD FAA-2014-0433: Rolls-Royce plc Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-24-08
- Products: Rolls-Royce
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 26, 2017, 82 FR 24262
- Comments due: July 10, 2017
- Became: [AD 2014-24-08](https://openairdocs.org/ad/2014-24-08)
- Docket: FAA-2014-0433 (https://www.regulations.gov/docket/FAA-2014-0433, where comments are filed)
- Project: 94-ANE-39-AD
- FR document: 2017-10440
- Official PDF: https://openairdocs.org/files/sha256/15/0e/150e0d9b58f65a97d8da97fafafc9a64547d3b6e60960f0136c5023558237bcc (from https://www.govinfo.gov/content/pkg/FR-2017-05-26/pdf/2017-10440.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/05/26/2017-10440/airworthiness-directives-rolls-royce-plc-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9605B1CA79B679568625812C004CD4AC.0001
- Page: https://openairdocs.org/proposed/FAA-2014-0433

## Summary

We propose to supersede airworthiness directive (AD) 2014-24- 08 that applies to all Rolls-Royce plc (RR) RB211-535E4-37, RB211- 535E4-B-37, and RB211-535E4-C-37 turbofan engines with certain low- pressure (LP) fuel filter-to-high-pressure (HP) fuel pump tube assemblies, or HP fuel pump-to-fuel flow governor (FFG) or FFG-to-HP pump inlet overspill return tube assemblies and flanged adaptor installed. AD 2014-24-08 requires replacing certain LP fuel filter-to- HP fuel pump tube assemblies. Since we issued AD 2014-24-08, fuel leaks have occurred at the flanged joints of the HP fuel pump-to-FFG tube assembly and FFG-to-HP pump inlet overspill return tube assembly. This proposed AD would retain the original AD requirements and also require installation of new HP fuel pump-to-FFG and FFG-to-HP pump inlet overspill return tube assemblies and flanged adaptor. We are proposing this AD to correct the unsafe condition on these products.

## Notices in this docket

- Jul 24, 2014: Notice of proposed rulemaking (NPRM). (first notice), FR document 2014-17461, comments due Sep 22, 2014 (https://www.federalregister.gov/documents/2014/07/24/2014-17461/airworthiness-directives-rolls-royce-plc-turbofan-engines)
- May 26, 2017: Notice of proposed rulemaking (NPRM)., FR document 2017-10440, comments due Jul 10, 2017 (https://www.federalregister.gov/documents/2017/05/26/2017-10440/airworthiness-directives-rolls-royce-plc-turbofan-engines)

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