AIRWORTHINESS DIRECTIVE

CAA-AD-3-063/98

Date of issue: August 28, 1998

HELICOPTER - COLLECTIVE IDLER LINK AND COLLECTIVE LEVER - LIFE LIMIT

Applicability: Applies to all Bell Helicopter Textron Canada (BHTC) Model 206L-4 helicopters.

Effective date: September 11, 1998

Compliance: Required as indicated in TCA CF-98-20

Remarks: Where applicable, the requirements of this AD must be integrated into the Aircraft´s Logbook(s).Address inquiries concerning this AD to: Civil Aviation Authority, Airworthiness Division, Ruzyne Airport, 160 08 Prague 6, Czech Republic, tel: 420 2 324086, fax: 420 2 364112.

 

Ing. Pavel MATOUŠEK

Director of Airworthiness Division CAA CZ

 

Transport Canada Civil Aviation, No.: CF-98-20, Date: 5 August 1998,

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) 593. PURSUANT TO CAR 605.84 AND THE FURTHER DETAILS OF CAR STANDARD 625, APPENDIX H, THE CONTINUING AIRWORTHINESS OF AN AIRCRAFT IS CONTINGENT UPON COMPLIANCE WITH ALL APPLICABLE ADs. FAILURE TO COMPLY WITH THE REOUIREMENTS 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.

CF-98-20 BELL

Applies to all Bell Helicopter Textron Canada (BHTC) Model 206L-4 helicopters.

Compliance is required within the next 100 hours air time after the effective date of this directive, unless already accomplished.

It has been determined that the collective idler link and the collective lever, when manufactured from two different materials, have substantially different airworthiness lives, while still being identified with a single part number. Parts manufactured from forged material have a longer life than those of rolled plate stock. Therefore, re-identification of the affected parts and corresponding life limitation are necessary. BHTC Alert Service Bulletin 206L-98-110, dated 6 May 1998, refers.

To ensure that part numbers of the collective idler link and the collective lever correspond with the proper airworthiness life limitations accomplish the following:

l. Check the part number and assign the proper corresponding retirement life as per following schedule:

Item

Part Number

Retirement Life

(a)

Collective Idler Link P/N 206-010-446-105 Serial No. A-1 through A-27 and RE-238 through RE-270

1200 hours

(b)

Collective Idler Link P/N 206-O10-446-105 having serial numbers other than those in (a) above, and Collective Idler Link P/N 206-O10-446-107

4800 hours

(c)

Collective Lever P/N 206-O10-447-105 Serial A-1 through A-22

1200 hours

(d)

Collective Lever P/N 206-O10-447-105 having serial numbers other than those in (a) above, and Collective Lever P/N 206-O10-447-109

4800 hours

2. Remove from service all parts that have already reached or exceeded their airworthiness limitation and replace them with airworthy parts.

3. Re-identify the collective idler link and collective lever that have a retirement life of 4800 hours to the new part numbers, as outlined below and in Part II of ASB 206L-98-110:

Component

Old Part Number

New Part Number

Collective Idler Link

206-010-446-105

206-010-446-107FM

Collective Lever

206-010-447-105

206-010-447-109FM

This directive become effective 11 September 1998.

For Minister of Transport

R.A. Raoux.

Acting Chief, Continuing Airworthiness

For further information contact a Transport Canada Centre, or Mr. Bogdan Gajewski, Continuing Airworthiness, Ottawa, telephone (613) 952-4450, facsimile (613) 996-9178 or e-mail gajewsbţtc.gc.ca.