DATE 

### ALERT SERVICE BULLETIN

REVISION NOTICE

AN APPROPRIATE ENTRY SHOULD BE MADE IN TH E AIRCRAFT LOGBOOK UPON ACCOMPLISHMENT

IF OWNERSHIP OF AIRCRAFT HAS CHANGED PLEASE FORWARD TO NEW OWNER JUN 10, 2009

TO: All Owners/Operators of Bell 206A/B and TH-67 Series Helicopters

SUBJECT: Revision “A” to Alert Service Bu lletin 206-09-123: DISC ASSEMBLY 101584-2, RECALL OF

Revision “A” to this bulletin adds the date w hen Bell Helicopter has started to sell disc assembly 101584-2 through Spares to the DESCRIPTION section.NO.

DA TE

PAGE DATE

REV 

### ALERT SERVICE BULLETIN

206-09-123

JUN 10, 09 APR 20, 2009

AN APPROPRIATE ENTRY SHOULD BE MADE IN TH E AIRCRAFT LOGBOOK UPON ACCOMPLISHMENT

IF OWNERSHIP OF AIRCRAFT HAS CHANGED PLEASE FORWARD TO NEW OWNER A 1 of 4

MODEL AFFECTED: 206A/B and TH-67 Series

SUBJECT: DISC ASSEMBLY 101584-2, RECALL OF

HELICOPT ERS AFFECTED: 206A Helicopters serial number 004 through 660 and 672 through 715.

206A Helicopters converted to 206B as per

Service Instruction 206-80.

206B Helicopters serial number 661 through 671 and 716 and subsequent.

206B (TH-67) Helicopters serial number 5101 and subsequent.

[All 206 helicopters delivered new form factory had disc assembly P/N 32721-1 installed at delivery]

-NOTEEach laminate of disc assembly 101584-2 is ink stamped

with P/N 101584-1.

COMPLIANCE: PART I: F or disk assembly P/N 101584-2 in spares stock, immediately after receipt of this bulletin.

PART II: For disk assembly P/N 101584-2 installed on helicopter, within the next 100 hours after receipt of this bulletin but not to exceed 30 days.

DESCRIPTION:

Bell Helicopter found that new disc asse mbly P/N 101584-2 sold through Spares beginning March 2009 as an alternate to P/N 32721-1 does not conform to the AASB 206-09-123 Page 2 of 4

approved Engineering. Th is Alert Service Bulletin mandat es the removal from service

of all disc assemblies P/N 101584-2.

APP ROVAL:

The engineering design aspects of this bul letin are Transport Canada Civil Aviation (TCCA) approved.

MANPOWER:

No additional man-hours ar e required to accomplish PA RT I of this bulletin.

Approximately 1.0 man-hour is required to replace each disc assembly that is affected by the ACCOMPLISHMENT INSTRUCTIONS PART II section of this bulletin. Manhours are based on hands-on time, and ma y vary with personnel and facilities

available.

WARRANTY:

Owners / Operators of Bell Heli copters who comply with the in structions in this Bulletin will be eligible to receive a 100% credit towards replacement Disc Assemblies part

number 32721-1.

To receive this credit:

• Comply with the instructions contained in this Bulletin no later than the applicable hours in the “compliance se ction” of this ASB, or no later than the March 31, 2010.

• Purchase replacement parts from a Bell approved source.

• Submit an MMIR to the Bell Warrant y Department referencing this ASB.

Customers who fail to comply with the inst ructions in this Bulletin before the March 31,

2010 are not eligible for the special warranty credit list ed above. There is no labor

associated with this bulletin.

MATERIAL:

Required Material: The following material is required for the ac complishment of this bulletin and may be obtained through your Bell Helico pter Textron Supply Center.

Part Number Nomenclature Quantity

32721-1 DISC ASSEMBLY A/RASB 206-09-123 Page 3 of 4

SPECIAL TOOLS:

None required

ELECTRICAL LOAD DATA:

Not affecte d

REFERENCES:

BHT-206A/B-SERIES-MM, Maintenance Manual

PUBLICATIONS AFFECTED:

None affected

ACCOMPLISHMENT INSTRUCTIONS:

PART I: For disc assembly in spares stock

-NOTEEach laminate of disc assembly 101584-2 is ink stamped

with P/N 101584-1.

1. Verify if disk assemblies in spare stock are identifi ed with P/N 101584-2. If a disc assembly is identified with P/N 101584-2, refer to the WARRANTY section of this

bulletin.

PART II: Disc assembly installed on Helicopter

-NOTEEach laminate of disc assembly 101584-2 is ink stamped

with P/N 101584-1.

1. Review helicopter records to determine if Disc Assembly P/N 101584-2 has been installed on the helicopter.ASB 206-09-123 Page 4 of 4

a. If helicopter records indicate that a Disc Assembly P/N 101584-2 has been installed, proc eed with step 2.

b. If helicopter records review indicate s that no Disc Assembly P/N 101584-2 has been installed, proceed with step 3.

2. Gain access to the tail rotor drives haft system and replac e Disc Assembly P/N 101584-2 with serviceable Disc Assembly P/N 32721-1 (BHT-206A/B-SERIES-MM, Chapter 65).

3. Make a log book entry to indicate that this bulletin has been accomplished.