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 206L series Helicopters

SUBJECT: Revision “A” to Alert Service Bu lletin 206L-09-157: 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

206L-09-157

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: 206L series

SUBJECT: DISC ASSEMBLY 101584-2, RECALL OF

HELICOPT ERS AFFECTED: 206L Helicopters serial number 45004 through 45153 and 46601 through 46617.

206L-1 Helicopters serial number 45154 through

45790.

206L-3 Helicopters serial number 51001 through

51612.

206L-4 Helicopters serial number 52001 and subsequent.

[All 206 helicopters deliver ed 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 approved Engineering. Th is Alert Service Bulletin mandat es the removal from service

of all disc assemblies P/N 101584-2. AASB 206L-09-157 Page 2 of 4

APP ROVAL:

The engineering design aspects of this bulletin 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 may 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 s pecial warranty credit listed 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 206L-09-157 Page 3 of 4

SPECIAL TOOLS:

None required

ELECTRICAL LOAD DATA:

Not affecte d

REFERENCES:

BHT-206L-MM, Maintenance Manual BHT-206L1-MM, Maintenance Manual BHT-206L3-MM, Maintenance Manual BHT-206L4-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 206L-09-157 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-206L-MM, Chapter 66) (BHT-206L1-MM, Chapter 66) (BHT- 206L3-MM, Chapter 65) (BHT-206L4-MM, Chapter 65).

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