2005-24-08: Eddy current inspections (ECIs) of the propeller hub

2005-24-08 McCauley Propeller Systems: Amendment 39-14388. Docket No. FAA-2005-22690; Directorate Identifier 2005-NE-35-AD. Effective Date (a) This airworthiness directive (AD) becomes effective December 15, 2005. Affected ADs (b) None. Applicability (c) This AD applies to McCauley Propeller Systems propeller assemblies, part numbers (P/Ns) B5JFR36C1101/114GCA-0, C5JFR36C1102/ L114GCA-0, B5JFR36C1103/114HCA-0, and C5JFR36C1104/L114HCA-0. These propeller assemblies are installed on BAE Systems (Operations) Limited Jetstream Model 4100 series airplanes. Unsafe Condition (d) This AD results from three reports of cracked propeller hubs. We are issuing this AD to prevent cracked propeller hubs, which could cause failure of the propeller hub, blade separation, and loss of control of the airplane. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Propeller Hub Reduced Life Limits (f) Remove any propeller hub from service that is currently, or ever was, operated on an engine with a water-methanol assist system, not later than 6,000 hours time-in-service (TIS). (g) Remove any other propeller hub from service not later than 18,000 hours TIS. (h) Remove any propeller hub from service that exceeds its life limit on the effective date of this AD, within 50 hours TIS after the effective date of this AD. Prohibition of Hubs Exceeding Life Limit (i) Any propeller hub removed from service after exceeding its life limit must not be returned to service on any installation. Propeller Hub Initial Inspection (j) For all installed propeller hubs, perform an eddy current inspection (ECI) within 200 hours TIS or 60 days after the effective date of this AD, whichever occurs first. Use the Accomplishment Instructions of McCauley Alert Service Bulletin (ASB) No. ASB250, dated September 12, 2005, to do the inspection. Propeller Hub Repetitive Inspections (k) Thereafter, for all installed propeller hubs with 12,000 or more hours TIS: (1) Perform repetitive ECIs within 1,800 hours TIS or 12 months, whichever occurs first. (2) Use the Accomplishment Instructions of McCauley ASB No. ASB250, dated September 12, 2005, to do the inspections. (l) This AD does not require repetitive inspections for propeller hubs that ever operated on, or are currently operating on, engines with a water-methanol assist system, due to the 6,000 hours TIS hub reduced life limit. Reporting Requirements (m) Report within 10 calendar days of the inspection, the results that equal or exceed the reject criteria to: (1) The FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Wichita, KS 67209, Attention: Jeff Janusz, telephone (316) 946-4148; e-mail: [email protected]; and (2) McCauley Propeller Systems, P.O. Box 7704, Wichita, KS 97277-7704.(3) Reporting requirements have been approved by the Office of Management and Budget (OMB) and assigned OMB control number 2120- 0056. Alternative Methods of Compliance (n) The Manager, Wichita Aircraft Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (o) None. Material Incorporated by Reference (p) You must use McCauley Alert Service Bulletin No. ASB250, dated September 12, 2005, to perform the inspections required by this AD. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact McCauley Propeller Systems, P.O. Box 7704, Wichita, KS 97277-7704, for a copy of this service information. You may review copies at the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-0001, on the Internet at http://dms.dot.gov, or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html .