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 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/ address.asp

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

. CF-2005-30

Issue Date 3 August 2005

Number: CF-2005-30

Subject: V NE - Instrumentation Change

Effective: 12 September 2005

Applicability: Bell Helicopter Textron Canada (BHTC) Model 430 helicopters:

- S/N 49001 through 49103, equipped with Overspeed Warning Kit,
P/N 430-706-004-101 or 430-706-004-103.

- S/N 49001 through 49100, equipped with Single AFCS with Flight Director Kit,
P/N 430-705-009-103/ -105/ -109/ -111/ -115/ -117, or P/N 430-705-011-109/
-111/-121/ -123.

- S/N 49001 through 49100 equipped with Dual AFCS with Flight Director Kit,
P/N 430-705-011-103 / -105/ -115/ -117/ -125/ -127/ -129/ -133/ -135/ -137.

Compliance: As indicated unless already accomp lished but not later than 31 July 2007.

Background: It has been determined that modification to the he licopter’s instrumentation is required to reflect the V NE values tested at temperatures to minus 40 degrees Centigrade (–40°C).
This modification affects the software in the V NE Overspeed Warning Computer (required for Category A operations) and in the AFCS Ai r Data Computer. The replacement of the Airspeed Indicator and the V NE Converter for the pilot and copilot is also necessary.

Corrective
Actions: Part A. Helicopters Equipped with Overspeed Warning Kit:

In accordance with Part 1 of Alert Serv ice Bulletin (ASB) 430-05-35 or later revision approved by the Chief, Continuing Airworthiness, Transport Canada:

1. Replace the V NE Overspeed Warning Computer, the pilot and copilot Airspeed Indicator, and the V NE Converter.

2. Remove the decal, P/N 430-075-070-103, fr om below the pilot and copilot Airspeed
Indicators.

Part B. Helicopters Equipped with Single or Dual AFCS with Flight Director Kit:

In accordance with Part 2 of Alert Servic e Bulletin (ASB) 430-05-35, or later revision approved by the Chief, Continuing Airworthiness, Transport Canada:

1. Replace the AFCS Air Data Computer Adapter module.

2. Remove the decal, P/N 430-075-070-101, fr om above the pilot and copilot horizontal situation indicator (HSI) display.No.
N ° CF-2005-30 2/2

Authorization: For Minister of Transport

R. William Taylor Acting Chief, Continuing Airworthiness

Contact: Mr. Bogdan Gajewski, Continuing Airworthiness, Ottawa, telephone 613 952-4450, facsimile 613 996-9178 or e-mail: gajewsb@t c.gc.ca or any Transport Canada Centre.