# Proposed AD FAA-2011-0684: Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-22-01
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 5, 2011, 76 FR 39033
- Comments due: August 19, 2011
- Became: [AD 2011-22-01](https://openairdocs.org/ad/2011-22-01)
- Docket: FAA-2011-0684 (https://www.regulations.gov/docket/FAA-2011-0684, where comments are filed)
- Project: 2010-NE-27-AD
- FR document: 2011-16709
- Official PDF: https://openairdocs.org/files/sha256/e4/73/e473deb95c962f1c4f8b1c11a7d71920331c0a86825584e67143a534ae8d83f6 (from https://www.govinfo.gov/content/pkg/FR-2011-07-05/pdf/2011-16709.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/07/05/2011-16709/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-rrd-br700-710-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3585C7CA5F09C5D6862578C4006019C7.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0684

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Analysis of service data carried out by Rolls-Royce Deutschland has shown that the effect of touch-and-go and overshoot on life cycle counting is higher than anticipated. Therefore, the life cycle counting method for touch-and-go and overshoot as defined by the Time Limits Manual needs to be changed to reflect this higher effect on life.

We are proposing this AD to prevent failure of high-energy, life- limited parts, uncontained engine failure, and damage to the airplane.

## Notices in this docket

- Jul 5, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-16709, comments due Aug 19, 2011 (https://www.federalregister.gov/documents/2011/07/05/2011-16709/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-rrd-br700-710-series-turbofan-engines)

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