Transport Transports 

Canada Canada

 TP 7245E

 

AIRWORTHINESS DIRECTIVE

The following airworthiness directive (AD) may be applicable to an aircraft which our records indicate is registered in your name. ADs are issued pursuant to Canadian 

Aviation Regulation (CAR) 521 Division X. 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 invalidate 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), National Aircraft Certification Branch, Transport Canada, Ottawa, telephone (613) 952-4357. 

URGENT URGENT URGENT URGENT URGENT URGENT URGENT URGENT URGENT

TRANSPORT CANADA EMERGENCY AIRWORTHINESS DIRECTIVE 

PLEASE FORWARD IMMEDIATELY TO THE PERSON RESPONSIBLE FOR THE OPERATION 

AND MAINTENANCE OF YOUR AIRCRAFT

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 Communications Centre (AARA) at Place 

de Ville, Ottawa, Ontario K1A 0N8, or 1-800-305-2059. 

24-0022 (01-2001) This document is available on the web at : http://www.tc.gc.ca/aviation/ad/ad_e.htm

1/2 No.

CF-2010-29

Issue Date 

26 August 2010 

Number: CF-2010-29 

Subject: Servo actuator 

Effective: Upon receipt 

Applicability: Bell Helicopter Textron Canada Models 222, 222B, 222U, 230 and 430 helicopters 

equipped with hydraulic servo actuators Part Number (P/N) 222-382-001-107. 

Compliance: As soon as possible, but no later than 5 air time hours upon receiving this directive, 

unless already accomplished. 

Background: It has been determined that the output piston rod assemblies of the hydraulic servo 

actuators may be corroded and, consequently, prone for corrosion cracking. Also, in one 

case, an unapproved repair was found on the piston rod. 

This situation, if not corrected, could result in a loss of control of the helicopter. 

This AD mandates: 

i. A one time inspection and, if applicable, rectification of the servo actuator. 

ii. Complete overhaul of servo actuator P/N 222-382-001-107. 

Corrective 

Actions:

A. Perform an inspection and, if applicable, rectify the servo actuator in accordance 

with the instructions provided in the applicable Bell Helicopter Alert Service Bulletin 

(ASB) listed below. 

Helicopter Model ASB dated 18 August 2010 

222 and 222B 222-10-109 

222U 222U-10-80 

230 230-10-41 

430 430-10-44 

B. Following compliance with part A, the servo actuator will require a complete 

overhaul based on the type of material applied as protection to the piston rod during 

the inspection/rework procedure, within: 
No.

 N° CF-2010-29 2/2 

1. 1200 air time hours or 12 months, whichever come first, for zinc chromate 

primer, or 

2. 2400 air time hours or 24 months, whichever come first, for brush cadmium 

plating. 

C. As of the effective date of this directive, no operator may install a replacement servo 

actuator, P/N 222-382-001-107, unless the servo actuator complies with Part A of 

this directive. 

Authorization: For Minister of Transport, Infrastructure and Communities 

ORIGINAL SIGNED BY 

Robin Lau for 

Derek Ferguson 

Chief, Continuing Airworthiness 

Contact: Mr. Bogdan Gajewski, Continuing Airworthiness, Ottawa, telephone 613-952-4357, 

facsimile 613-996-9178 or e-mail CAWWEBFeedback@tc.gc.ca or any Transport 

Canada Centre.