AD 2020-20-21 Airworthiness Directives; Agusta S.p.A. (Agusta) Model A109E Helicopters

Models named: A109E. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Agusta Model A109E helicopters, all serial numbers up to and including serial number (S/N) 11758 (except S/N 11741, 11754, and 11757) modified with a circuit breaker modification kit, part number (P/N) 109-0812-04-101, -103, -107, or -109; certificated in any category. Reason (d) The mandatory continuing airworthiness information (MCAI) AD states after a report of an electrical failure, an investigation revealed inadequate functioning of the 35 amperes (Amps) battery bus (BATT BUS) circuit breaker.

Within 50 hours time-in-service, unless already done, modify the fuselage electrical installation, P/N 109-0741-49, and the overhead panel electrical installation, P/N 109-0741-55 with a BATT BUS circuit breaker modification kit, P/N 109-0824-73-101, as depicted in Figures 1 and 2 and by following the Compliance Instructions, paragraphs 2 through 20.7, of Agusta Mandatory Bollettino Tecnico No. 109EP-98, dated June 22, 2009. Differences Between This AD and the MCAI AD (f) We refer to flight hours as hours time-in-service. Also, we do not refer to a calendar compliance date of December 31, 2009, because the effective date of this AD would be later than that date. Other Information (g) Alternative Methods of Compliance (AMOCs): The Manager, Safety Management Group, ATTN: DOT/FAA Southwest Region, Mark Wiley, ASW-111, Aviation Safety Engineer, Rotorcraft Directorate, Regulations and Policy Group, 2601 Meacham Blvd., Fort Worth, Texas 76137, telephone (817) 222-5114, fax (817) 222-5961, has the authority to approve AMOCs for this AD, if requested, using the procedures found in 14 CFR 39.19. Related Information (h) EASA MCAI AD No. 2009-0137, dated June 23, 2009, contains related information. Joint Aircraft System/Component (JASC) Code (i) The JASC Code is 2460: Electrical Power Systems. Material Incorporated by Reference (j) You must use the specified portions of Agusta Mandatory Bollettino Tecnico No. 109EP-98, dated June 22, 2009, to do the actions required. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Agusta, Via Giovanni Agusta, 520 21017 Cascina Costa di Samarate (VA), Italy, telephone 39 0331-229111, fax 39 0331-229605/222595, or at http://customersupport.agusta.com/technical_advice.php. (3) You may review copies at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Fort Worth, Texas 76137; 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. Issued in Fort Worth, Texas, on September 22, 2010. Mark R. Schilling, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 2010-24723 Filed 10-4-10; 8:45 am] BILLING CODE 4910-13-P

Within 50 hours time-in-service, unless already done, modify the fuselage electrical installation, P/N 109-0741-49, and the overhead panel electrical installation, P/N 109-0741-55 with a BATT BUS circuit breaker modification kit, P/N 109-0824-73-101, as depicted in Figures 1 and 2 and by following the Compliance Instructions, paragraphs 2 through 20.7, of Agusta Mandatory Bollettino Tecnico No. 109EP-98, dated June 22, 2009. Differences Between This AD and the MCAI AD (f) We refer to flight hours as hours time-in-service. Also, we do not refer to a calendar compliance date of December 31, 2009, because the effective date of this AD would be later than that date. Other Information (g) Alternative Methods of Compliance (AMOCs): The Manager, Safety Management Group, ATTN: DOT/FAA Southwest Region, Mark Wiley, ASW-111, Aviation Safety Engineer, Rotorcraft Directorate, Regulations and Policy Group, 2601 Meacham Blvd., Fort Worth, Texas 76137, telephone (817) 222-5114, fax (817) 222-5961, has the authority to approve AMOCs for this AD, if requested, using the procedures found in 14 CFR 39.19. Related Information (h) EASA MCAI AD No. 2009-0137, dated June 23, 2009, contains related information. Joint Aircraft System/Component (JASC) Code (i) The JASC Code is 2460: Electrical Power Systems. Material Incorporated by Reference (j) You must use the specified portions of Agusta Mandatory Bollettino Tecnico No. 109EP-98, dated June 22, 2009, to do the actions required. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Agusta, Via Giovanni Agusta, 520 21017 Cascina Costa di Samarate (VA), Italy, telephone 39 0331-229111, fax 39 0331-229605/222595, or at http://customersupport.agusta.com/technical_advice.php. (3) You may review copies at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Fort Worth, Texas 76137; 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. Issued in Fort Worth, Texas, on September 22, 2010. Mark R. Schilling, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 2010-24723 Filed 10-4-10; 8:45 am] BILLING CODE 4910-13-P