federal_register: 01-31699
Data license: Public Domain (U.S. Government data) · Data source: Federal Register API & Regulations.gov API
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| document_number | title | type | abstract | publication_date | pub_year | pub_month | html_url | pdf_url | agency_names | agency_ids | excerpts |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 01-31699 | Airworthiness Directives; Rolls-Royce, plc RB211 Trent 800 Series Turbofan Engines | Rule | This amendment supersedes an existing airworthiness directive (AD) that is applicable to Rolls-Royce, plc RB211 Trent 800 series turbofan engines. That AD currently requires initial and repetitive ultrasonic inspections of low pressure compressor (LPC) fan blade roots for cracks, and replacement, if necessary, with serviceable parts. This amendment requires initial inspections at modified thresholds and repetitive inspections at reduced intervals from the current AD using new LPC fan blade inspection criteria, and requires renewal of dry film lubricant on removed blades. This amendment is prompted by reports that an in-service engine experienced LPC fan blade root cracking at a lower life than previously forecast, and, the manufacturer's further investigation that has led to a better understanding of the causes of fan blade root cracking. The actions specified in this AD are intended to prevent LPC fan blade failure due to cracking, which could result in multiple fan blade release, uncontained engine failure, and possible damage to the airplane. | 2001-12-31 | 2001 | 12 | https://www.federalregister.gov/documents/2001/12/31/01-31699/airworthiness-directives-rolls-royce-plc-rb211-trent-800-series-turbofan-engines | https://www.govinfo.gov/content/pkg/FR-2001-12-31/pdf/01-31699.pdf | Transportation Department; Federal Aviation Administration | 492,159 | This amendment supersedes an existing airworthiness directive (AD) that is applicable to Rolls-Royce, plc RB211 Trent 800 series turbofan engines. That AD currently requires initial and repetitive ultrasonic inspections of low pressure compressor (LPC)... |