federal_register: 2011-13013
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 | regulation_id_numbers |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2011-13013 | Airworthiness Directives; General Electric Company (GE) GE90-110B1 and GE90-115B Turbofan Engines | Proposed Rule | We propose to adopt a new airworthiness directive (AD) for the products listed above, with certain part number (P/N) high-pressure compressor (HPC) stages 2-5 spools installed. This proposed AD would require eddy current inspection (ECI) or spot fluorescent penetrant inspection (FPI) of the stages 1-2 rotating seal teeth of the HPC stages 2-5 spool for cracks and would prohibit installation of HPC stator stage 1 interstage seals that are not pregrooved to prevent heavy rubs. This proposed AD was prompted by an aborted takeoff and two shop findings of cracks in the stages 1-2 rotating seal teeth. We are proposing this AD to detect cracks in the HPC stages 1-2 rotating seal teeth due to heavy rubs, which could result in failure of the stages 1- 2 rotating seal of the HPC stages 2-5 spool, uncontained engine failure, and damage to the airplane. | 2011-05-26 | 2011 | 5 | https://www.federalregister.gov/documents/2011/05/26/2011-13013/airworthiness-directives-general-electric-company-ge-ge90-110b1-and-ge90-115b-turbofan-engines | https://www.govinfo.gov/content/pkg/FR-2011-05-26/pdf/2011-13013.pdf | Transportation Department; Federal Aviation Administration | 492,159 | We propose to adopt a new airworthiness directive (AD) for the products listed above, with certain part number (P/N) high-pressure compressor (HPC) stages 2-5 spools installed. This proposed AD would require eddy current inspection (ECI) or spot... |