{"database": "openregs", "table": "federal_register", "rows": [["2011-17648", "Airworthiness Directives; Pratt & Whitney Division (PW) PW4000 Series Turbofan Engines", "Proposed Rule", "We propose to adopt a new airworthiness directive (AD) for certain PW4000 turbofan engines. This proposed AD was prompted by an updated low-cycle fatigue (LCF) life analysis performed by Pratt & Whitney. This proposed AD would require removing certain part number (P/N) high-pressure turbine (HPT) stage 1 and HPT stage 2 airseals and HPT stage 1 airseal rings before their published life limit, and establishes a new lower life limit for these parts. We are proposing this AD to correct the unsafe condition on these products.", "2011-07-14", 2011, 7, "https://www.federalregister.gov/documents/2011/07/14/2011-17648/airworthiness-directives-pratt-and-whitney-division-pw-pw4000-series-turbofan-engines", "https://www.govinfo.gov/content/pkg/FR-2011-07-14/pdf/2011-17648.pdf", "Transportation Department; Federal Aviation Administration", "492,159", "We propose to adopt a new airworthiness directive (AD) for certain PW4000 turbofan engines. This proposed AD was prompted by an updated low-cycle fatigue (LCF) life analysis performed by Pratt & Whitney. This proposed AD would require removing certain...", null]], "columns": ["document_number", "title", "type", "abstract", "publication_date", "pub_year", "pub_month", "html_url", "pdf_url", "agency_names", "agency_ids", "excerpts", "regulation_id_numbers"], "primary_keys": ["document_number"], "primary_key_values": ["2011-17648"], "units": {}, "query_ms": 70.13794302474707, "source": "Federal Register API & Regulations.gov API", "source_url": "https://www.federalregister.gov/developers/api/v1", "license": "Public Domain (U.S. Government data)", "license_url": "https://www.regulations.gov/faq"}