# Proposed AD FAA-2006-25272: Rolls-Royce Deutschland Ltd & Co KG (Formerly Rolls-Royce plc) Dart 528, 529, 532, 535, 542, and 552 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2007-03-13
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 12, 2006, 71 FR 53610
- Comments due: November 13, 2006
- Became: [AD 2007-03-13](https://openairdocs.org/ad/2007-03-13)
- Docket: FAA-2006-25272 (https://www.regulations.gov/docket/FAA-2006-25272, where comments are filed)
- Project: 2006-NE-16-AD
- FR document: E6-15049
- Official PDF: https://openairdocs.org/files/sha256/92/d8/92d889904e1bb433f41db1461754aa367de1c7b0afea0a7edc9d5a69e22e7386 (from https://www.govinfo.gov/content/pkg/FR-2006-09-12/pdf/E6-15049.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/09/12/E6-15049/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-formerly-rolls-royce-plc-dart-528-529
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/796F2192D1214044862571E70066F599.0001
- Page: https://openairdocs.org/proposed/FAA-2006-25272

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Rolls-Royce Deutschland Ltd & Co KG (formerly Rolls-Royce plc) (RRD) Dart 528, 529, 532, 535, 542, and 552 series turbofan engines. This proposed AD would require repetitive inspections of high pressure turbine (HPT) blade platforms and shrouds, and reworking the engines if the inspections reveal excessive gaps between blade shrouds. This proposed AD results from reports of HPT disk rim failures. We are proposing this AD to prevent HPT disk rim failures resulting in the release of portions of the HPT disk, uncontained engine failure, and damage to the airplane.

## Notices in this docket

- Sep 12, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-15049, comments due Nov 13, 2006 (https://www.federalregister.gov/documents/2006/09/12/E6-15049/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-formerly-rolls-royce-plc-dart-528-529)

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