AD/Bell 222/34 Tail Rotor Counterweight Bellcrank (Cth)
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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 | Tail Rotor Counterweight Bellcrank | 10/2005 TX |
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. |
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 A, for Models 222 and 222B, and Part I of ASB 222U-04-72 Revision A, for Model 222U. 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. Note 2: Transport Canada AD CF-2005-27 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. Before 1 April 2006. |
| This Airworthiness Directive becomes effective on 19 August 2005. | |
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. |
James Coyne
Delegate of the Civil Aviation Safety Authority
17 August 2005
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