AD/Bell 222/34 Amdt 1 Tail Rotor Counterweight Bellcrank (Cth)
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 222/34 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) 222 Series Helicopters
| AD/BELL 222/34 Amdt 1 | Tail Rotor Counterweight Bellcrank | 9/2007 |
Applicability: | Model 222 helicopters, serial numbers 47006 through 47089. Model 222B helicopters, serial numbers 47131 through 47156. Model 222U helicopters, serial numbers 47501 through 47574. Model 230 helicopters, serial numbers 23001 through 23038. |
Requirement: | 1. Identify the part number of the tail rotor counterweight bellcrank installed on the helicopter and proceed as follows: If part number 222-012-727-003 is installed, proceed to Requirement 3. If part number 222-012-727-105 without the prefix letters is installed, proceed to Requirement 2. Note 1: Part number 222-012-727-105, with the added prefix letters inscribed on the part before the serial number, satisfies the requirement of this Directive. 2. Inspect the tail rotor counterweight bellcrank in accordance with Part I of Bell Helicopter Textron Canada Alert Service Bulletin (ASB) 222-04-101 Revision B, for Models 222 and 222B, Part I of ASB 222U-04-72 Revision B, for Model 222U, and Part I of ASB 230-04-32 Revision B, for Model 230. 3. Remove from service, tail rotor counterweight bellcrank part numbers Models 222 and 222B helicopters with the following bellcranks: - Part number 222-012-727-105 bellcranks installed; in accordance with Part II of ASB 222-04-101 Revision A. - Part number 222-012-727-003 bellcranks installed; in accordance with ASB 222-04-99 Revision B. |
| Model 222U helicopters with the following bellcranks: - Part number 222-012-727-105 bellcranks installed; in accordance with Part II of ASB 222U-04-72 Revision A. - Part number 222-012-727-003 bellcranks installed; in accordance with ASB 222U-04-70 Revision B. Model 230 helicopters with the following bellcranks: - Part number 222-012-727-105 bellcranks installed; in accordance with Part II of ASB 230-04-32 Revision B. - Part number 222-012-727-103 bellcranks installed; in accordance with ASB 230-04-30 Revision C. Note 2: Transport Canada AD CF-2005-27R1 refers. | |
Compliance: | 1. Within 10 flight hours after 19 August 2005. 2. Within 10 flight hours after 19 August 2005. Repeat thereafter at intervals not to exceed 50 flight hours, until compliance with Requirement 3. 3. Unless already accomplished, before 30 September 2007. The compliance times for Requirements 1 and 2 remain unchanged by this issue of the Directive. |
| This Amendment becomes effective on 30 August 2007. | |
Background: | The manufacturer has determined that tail rotor counterweight bellcrank part numbers 222-012-727-003 and 222-012-727-105 may have manufacturing discrepancies, which can result in an in-flight failure. BHTC also has identified certain correctly manufactured parts that are not affected. Amendment 1 is issued to include the Model 230 helicopter in applicability and change the compliance time for Requirement 3. |
David Villiers
Delegate of the Civil Aviation Safety Authority
10 July 2007
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