Airworthiness directives › 2007-26-10
AD 2007-26-10 Airworthiness Directives; Bell Helicopter Textron Canada Model 430 Helicopters
Models named: 430. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model 430 helicopters, serial numbers 49001 through 49106, with a servo actuator-to-actuator support attachment bolt (bolt), part number (P/N) 50-047C8-31, installed, which attaches the lower two cyclic servo actuators and the lower collective servo actuator to the three lower actuator supports, certificated in any category.
Compliance
Required as indicated, unless accomplished previously. To prevent fatigue failure of the bolt and subsequent loss of control of the helicopter, do the following: (a) Within 150 hours time-in-service (TIS), replace all three affected bolts, as depicted for one of these bolts in Figure 1 of this AD, with airworthy, zero-time bolts, P/N 50-047C8-31. BILLING CODE 4910-13-P ER02JA08.004 BILLING CODE 4910-13-C Note 1: Only the right servo lower attach bolt (1) is shown. The collective and left cyclic servo lower attach bolts are also to be replaced. (This AD does not apply to the same part-numbered bolts at the upper end of each servo.) Note 2: Bell Helicopter Textron Alert Service Bulletin No. 430-05-33, dated February 16, 2005, pertains to the subject of this AD. (b) This AD revises the Airworthiness Limitations section of the maintenance manual by establishing a retirement life of 5000 hours TIS for each bolt. (c) Record a 5000-hour TIS life limit for each bolt on the component history card or equivalent record. (d) 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 Safety Management Group, FAA, ATTN: Sharon Miles, Aviation Safety Engineer, Rotorcraft Directorate, Regulations and Guidance Group, Fort Worth, Texas 76193-0111, telephone (817) 222-5122, fax (817) 222-5961 for information about previously approved alternative methods of compliance. (e) This amendment becomes effective on February 6, 2008. Note 3: The subject of this AD is addressed in Transport Canada (Canada) AD No. CF 2005-09, dated April 14, 2005. Issued in Fort Worth, Texas, on November 30, 2007. Mark R. Schilling, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. E7-25389 Filed 12-31-07; 8:45 am] BILLING CODE 4910-13-P
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