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# AIRWORTHINESS DIRECTIVE

The following airworthiness directive (AD) may be applicable to an aircraft which our records indicate is registered in your na me. ADs are issued pursuant to Canadian Aviation Regulation (CAR) 593 . Pursuant to CAR 605.84 and the further details of CAR Standard 625, Appendix H , the continuing airworthiness of a Canadian registered aircraft is contingent upon compliance with all applicable ADs. Failure to comply with the requirements of an AD may invalidat e the flight authorization of the aircraft. Alternative means of compliance shall be applied for in accordance with CAR 605.84 and the above-referenced Standard

. This AD has been issued by the Continuing Airworthiness Division (AARDG), Aircraft Certification Branch, Transport Canada, Otta wa, telephone 613 952-4357.

Pursuant to CAR 202.51 the registered owner of a Canadian aircraft shall, within seven days, notify the Minister in writing of any change of his or her name or address.

To request a change of address, contact the Civil Aviation Communica tions Centre (AARC)
at Place de Ville, Ottawa, Ontario K1A 0N8 , or 1-800-305-2059

, or www.tc.gc.ca/civilaviation/communications/centre/ addr ess.asp

24-0022 (01-2005) 1/2 No

. CF-2009-03

Issue Date 22 January 2009

Number: CF-2009-03

Subject: Hydraulic Pump – Driveshaft Assembly

Effective: 4 March 2009

Applicability: Bell Helicopter Textron Canada (BHTC) Model 407 helicopters serial number 53000 through 53408 and 53421 through 53459. This directive does not affect helicopters equipped with input shaft part number (P/N) 407-340-107-101 and adapter P/N 407-340- 108-101, installed in accordance with Technical Bulletin (TB) 407-01-30 Revision A dated 21 May 2003.

Compliance: As indicated unless already accomplished:

1. Effective immediately for all dr iveshaft assemblies in spare stock.

2. For all driveshaft assemblies installed on ai rcraft, at the next driveshaft lubrication, no

later than 50 hours air time or 30 calendar days, whichever comes first after the

effective date of this directive.

Background: It has been determined that some hydraulic pump driveshaft assemblies P/N 406-040-072-105 may have been delivered with a missing internal plug or fastening rivet. This condition, if not corrected, could result in a loss of hydraulic pressure leading to difficulty controlling the helicopter.

This directive mandates a one-time verification of the presence of the plug in the centre of the driveshaft and the rivet that holds the plug in place.

Corrective

Actions: 1. Verify the installation of the parts in accordance with BHTC Alert Service Bulletin (ASB) 407-08-83 dated 22 May 2008, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

2. If any part is missing, install an airworthy input shaft and adapter.

3. If the parts are correctly installed, make a logbook entry to that effect or attach the serviceable tag to the parts in inventory as per Part 1 item 3 of ASB 407-08-83, or later revisions approved by the Chief, Continui ng Airworthiness, Transport Canada.

Authorization: For Minister of Transport, In frastructure and Communities

Derek Ferguson Acting Chief, Continuing Airworthiness

Contact: Mr. Bogdan Gajewski, Continuing Airworthiness, Ottawa, telephone (613) 952-4450, facsimile (613) 996-9178 or e-mail: bogdan.gaj ewski@tc.gc.ca or any Transport Canada

CentreNo.

N ° CF-2007-08 2/2