# Proposed AD 2001-NE-14-AD: Rolls-Royce plc Models Spey 506-14A, 555-15, 555-15H, 555-15N, and 555-15P Turbojet Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2002-18-03
- Products: Rolls-Royce
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 18, 2002, 67 FR 19134
- Comments due: June 17, 2002
- Became: [AD 2002-18-03](https://openairdocs.org/ad/2002-18-03)
- Docket: 2001-NE-14-AD
- FR document: 02-9394
- Official PDF: https://openairdocs.org/files/sha256/e1/e0/e1e04067f6eda46a393333b68698420b8b6fa27d80aeb883466de321903e320e (from https://www.govinfo.gov/content/pkg/FR-2002-04-18/pdf/02-9394.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/04/18/02-9394/airworthiness-directives-rolls-royce-plc-models-spey-506-14a-555-15-555-15h-555-15n-and-555-15p
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7BBD688ABDE43F6F86256B9F00517B75.0001
- Page: https://openairdocs.org/proposed/2001-NE-14-AD

## Summary

The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to Rolls-Royce plc (RR) Spey 506-14A, 555-15, 555-15H, 555-15N, and 555-15P turbojet engines. This proposal would require replacing certain stage 2 low pressure turbine (LPT) blades with new redesigned stage 2 LPT blades. This proposal is prompted by several reports of failures of stage 2 LPT blades. The actions specified by the proposed AD are intended to prevent failure of the stage 2 LPT blades, which could result in an engine shutdown.

## Notices in this docket

- Apr 18, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-9394, comments due Jun 17, 2002 (https://www.federalregister.gov/documents/2002/04/18/02-9394/airworthiness-directives-rolls-royce-plc-models-spey-506-14a-555-15-555-15h-555-15n-and-555-15p)

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