# Proposed AD 96-ANE-09: Rolls-Royce plc RB211-535E4 and -535E4- B Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 97-02-12
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 12, 1996, 61 FR 29697
- Comments due: August 12, 1996
- Became: [AD 97-02-12](https://openairdocs.org/ad/97-02-12)
- Docket: 96-ANE-09
- FR document: 96-14866
- Official PDF: https://openairdocs.org/files/sha256/6a/af/6aaff5f344fbb418f5fe9019f6d4bbe7854fe122069a48eaac260c9a39696fad (from https://www.govinfo.gov/content/pkg/FR-1996-06-12/pdf/96-14866.pdf)
- Federal Register: https://www.federalregister.gov/documents/1996/06/12/96-14866/airworthiness-directives-rolls-royce-plc-rb211-535e4-and--535e4--b-series-turbofan-engines
- Page: https://openairdocs.org/proposed/96-ANE-09

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Rolls-Royce plc RB211-535E4 and - 535E4-B series turbofan engines. This proposal would require installation of an improved fuel flow governor that incorporates revised minimum compressor discharge P4 stop settings. This proposal is prompted by reports of engine rundowns during low idle descent during icing conditions. The actions specified by the proposed AD are intended to prevent compressor stall and subsequent engine rundown on one or both engines.

## Notices in this docket

- Jun 12, 1996: Notice of proposed rulemaking (NPRM). (first notice), FR document 96-14866, comments due Aug 12, 1996 (https://www.federalregister.gov/documents/1996/06/12/96-14866/airworthiness-directives-rolls-royce-plc-rb211-535e4-and--535e4--b-series-turbofan-engines)

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