Airworthiness directives › 2005-03-07
AD 2005-03-07 Airworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters
Models named: 407. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model 407 helicopters, with landing gear crosstube assemblies, part number (P/N) 407-050-101-101 and -103; P/N 407-050-102-101 and -103; P/N 407-050-201-101 and -103; P/N 407-050-202-101 and -103; P/N 407-704-007-119; P/N 407-722-101; P/N 407-723-104; P/N 407-724-101; or P/N 407-725-104, installed, certificated in any category. Note 1: This AD applicability includes both Bell crosstube assemblies and Bell's approved production and spare alternate crosstube assemblies from Aeronautical Accessories Incorporated (AAI).
Compliance
Required as indicated, unless accomplished previously. To prevent fatigue failure of the crosstube assembly and subsequent loss of control of the helicopter, accomplish the following: (a) Before further flight, create a component history card or equivalent record for each crosstube assembly. (b) Before further flight, determine and record the accumulated Retirement Index Number (RIN) for each crosstube assembly as follows: (1) For each crosstube assembly, record one (1) RIN for every run-on landing. (2) For any crosstube assembly with an unknown number of run-on landings, assume and record ten (10) RINs for each 100 hours TIS since the crosstube assembly was installed (for example, 5,000 hours of time-in-service equals 500 RIN). (c) Replace any crosstube assembly on or before reaching 5,000 RIN. Note 2: Bell Helicopter Textron Alert Service Bulletin No. 407-03-59, dated October 15, 2003, pertains to the subject of this AD. (d) This AD revises the Airworthiness Limitations section of the maintenance manual by establishing a retirement life of 5,000 RIN for the affected crosstube assemblies. (e) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Contact the Regulations and Policy Group, Rotorcraft Directorate, FAA, for information about previously approved alternative methods of compliance. (f) This amendment becomes effective on March 17, 2005. Note 3: The subject of this AD is addressed in Transport Canada (Canada) AD No. CF-2004-03, dated February 11, 2004. Issued in Fort Worth, Texas, on January 24, 2005. Mark R. Schilling, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 05-2589 Filed 2-9-05; 8:45 am] BILLING CODE 4910-13-P
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1