Document ID: chunk:federal_register_of_legislation:F2007L04229:body:0:p1
Version: federal_register_of_legislation:F2007L04229
Segment Type: other
Provision Reference: 
Character Range: 0–3108

AIRWORTHINESS DIRECTIVE
On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BELL 206/158 Amdt 2 and issues the following AD under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters
AD/BELL 206/158 Amdt 3  Fuel Distribution System  12/2007

Applicability:  Bell Helicopter Textron Canada (BHTC), Model 206 series helicopters up to S/N 5305 inclusive.
Requirement:       1. Inspect the grounding of the fuel pumps and solenoid valve, as per instructions provided in Part I of Alert Service Bulletin (ASB) 206-05-103, dated 11 February 2005, or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

                   2. Perform clamping of the purge hose and position the boost pumps as indicated, in accordance with Part II of ASB 206-05-103, Revision A dated 12 July 2006 or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

                   3. Verify the installation of the restrictor as per the instructions provide in Part III of ASB 206-05-103, Revision A or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

                   4. Verify the installation of a filter as per the instructions provide in Part IV of ASB 206-05-103, Revision A or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

                   5. For helicopters requiring the filter, amend the maintenance program to require a recurring 24 month inspection and cleaning as indicated in Part IV, paragraph 2 of ASB 206-05-103 Revision A or later revisions approved by the Chief, Continuing Airworthiness, Transport Canada.

                Note:  Transport Canada AD CF-2005-10R3 refers.
Compliance:     For Requirement 1 - Within the next 100 hours time in service, but no later than
                22 December 2007.

                For Requirement 2 - No later than 22 December 2007.

                For Requirements 3, 4 and 5 - At the next 100-hour inspection but no later than
                22 December 2007.

             This Amendment becomes effective on 22 November 2007.
Background:  Transport Canada has advised that inadequate electrical grounding of the fuel boost pump and the fuel drain solenoid valve, combined with fuel hoses contact, could cause arcing in the main fuel cell which may in turn cause an explosion and resultant fire.

             The original issue of this Directive required a one time inspection