HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

TRANSMITTAL SHEET

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

December 18, 2012

This page transmits a revision to Alert Service Bulletin HC-ASB-61-338.

• Original Issue, dated Nov 07/12

• Revision 1, dated Dec 18/12

Propeller assemblies that have previously complied with the inspections required in a 

previous version of this Alert Service Bulletin are affected.

FAA approval has been obtained on technical data in this publication that affects type design.

Changes are shown by a change bar in the left margin of the revised pages.

This revision(s) is issued to change the following in the Alert Service Bulletin:

- Revision 1 adds the requirement to replace the original design B-119-2 

diaphragm with a new redesigned B-119-2 diaphragm

This Alert Service Bulletin is reissued in its entirety.
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

TRANSMITTAL SHEET

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

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HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec 18/12 Page 1 of 8

1. Planning Information

A. Effectivity

(1) Hartzell Propeller Inc. steel hub propeller models HC-(1,D)2(X,V,MV)20-7, 

HC-(1,D)2(X,V,MV)20-8, and HC-(1,D)3(X,V,MV)20-8 with the original design 

B-119-2 diaphragm that did not include a tab for identification, are affected by 

this Alert Service Bulletin.

CAUTION: DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM 

ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE 

MOST RECENT REVISION OF THIS ALERT SERVICE BULLETIN. 

INFORMATION CONTAINED IN THIS ALERT SERVICE BULLETIN MAY 

BE SIGNIFICANTLY CHANGED FROM EARLIER REVISIONS. FAILURE 

TO COMPLY WITH THIS ALERT SERVICE BULLETIN OR THE USE OF 

OBSOLETE INFORMATION MAY CREATE AN UNSAFE CONDITION 

THAT MAY RESULT IN DEATH, SERIOUS BODILY INJURY, AND/

OR SUBSTANTIAL PROPERTY DAMAGE. REFER TO THE SERVICE 

BULLETIN INDEX FOR THE MOST RECENT REVISION LEVEL OF THIS 

ALERT SERVICE BULLETIN. 

B. Concurrent Requirements

(1) Hartzell Propeller Inc. Service Bulletin HC-SB-61-217, HC-SB-61-331, Service 

Letter HC-SL-61-48A, and Airworthiness Directive 65-21-04, 85-14-10, and 

97-18-02 may be applicable.

(2) Additional service documents may apply to the components/propellers affected 

by this Alert Service Bulletin. Compliance with additional service documents 

may be necessary in conjunction with the completion of the Accomplishment 

Instructions in this Alert Service Bulletin. Refer to the Hartzell Propeller Inc. 

website at www.hartzellprop.com for a cross-reference of service documents. 

C. Reason

(1) Hartzell Propeller Inc. has received several reports of failure of the B-119-2 

diaphragm. 

(2) Failure of the B-119-2 diaphragm can quickly result in complete loss of engine 

oil and rapid engine shutdown with oil covering the windscreen.

(3) Revision 1 of this Alert Service Bulletin introduces the new B-119-2 diaphragm. 

The B-119-2 diaphragm has been redesigned to improve the service life of the 

diaphragm.

(4) Regulatory action is expected.

© 2012 - Hartzell Propeller Inc. - All rights reserved
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec/12 Page 2 of 8

D. Description

(1) This document provides Instructions for Continued Airworthiness (ICA).

(2) The original issue of this Alert Service Bulletin required an initial and repetitive 

inspection of the B-119-2 diaphragm. 

(3) The original design B-119-2 diaphragm did not include a tab for identification.

(4) Revision 1 to this Alert Service Bulletin requires replacement of the original 

design B-119-2 diaphragm. 

(a) The redesigned B-119-2 diaphragm was designed with a tab located 

between two of the mounting tabs on the outside edge of the diaphragm. 

Refer to Figure 1.

NOTE: This tab will be marked with a batch/lot number.

(5) This Alert Service Bulletin requires that original design B-119-2 diaphragms in 

inventory or stock be removed and returned to Hartzell Propeller Inc.

(6) Labor for replacement of the affected original design B-119-2 diaphragm with 

the redesigned B-119-2 diaphragm will be covered under warranty. Refer to the 

Appendix of this Alert Service Bulletin.
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec 18/12 Page 3 of 8

E. Compliance

(1) Within 30 days of the date of this Alert Service Bulletin, return any original design

B-119-2 diaphragm in inventory or stock to Hartzell Propeller Inc. in accordance 

with the Accomplishments Instructions in the Alert Service Bulletin. Installation 

of any original design B-119-2 diaphragm in inventory or stock, is not permitted.

(2) Before next flight, perform the inspection specified in the Accomplishment 

Instructions in this Alert Service Bulletin on any installed original design B-119-2 

diaphragm.

(3) Repeat the inspection specified in the Accomplishment Instructions in this Alert 

Service Bulletin on any installed original design B-119-2 diaphragm at intervals 

not to exceed 10 flight hours or at next annual inspection, whichever occurs 

first.

(4) Replace an original design B-119-2 diaphragm within 10 hours of operation or 

at next annual, whichever occurs first.

(5) After initial replacement with a redesigned B-119-2 diaphragm, replace the 

B-119-2 diaphragm every 24 months or 250 hours of operation, whichever 

occurs first, regardless of design.

(6) Replacement of the original design B-119-2 diaphragm with a redesigned 

B-119-2 diaphragm is terminating action for the inspection specified in the 

Accomplishments Instructions of this Alert Service Bulletin.

F. Approval

(1) FAA approval has been obtained on technical data in this publication that 

affects type design.

G. Manpower

(1) Approximately 2 man hours are required for inspection of the diaphragm.

(2) Approximately 4 man hours are required for removal and installation of the 

diaphragm.

H. Weight and Balance

(1) Not changed 
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec/12 Page 4 of 8

Tab located between two 

of the mounting tabs on 

the outside edge of the 

diaphragm.

B-119-2 Redesigned Diaphragm

Figure 1
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec 18/12 Page 5 of 8

I. Electrical Load Data

(1) Not changed

CAUTION: DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM 

ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE MOST 

RECENT REVISION OF ALL DOCUMENTS.

J. References

(1) Hartzell Propeller Inc. Owner's Manual 140 (61-00-40)

K. Other Publications Affected

(1) None

2. Material Information

A. Material Necessary for Each Propeller/Component and Supplied by Hartzell 

Propeller Inc.

Part Number Description Qty

Redesigned B-119-2 Diaphragm 1
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec/12 Page 6 of 8

3. Accomplishment Instructions

A. Original Design Diaphragm Inspection

NOTE: Inspection of a redesigned B-119-2 diaphragm is not required.

(1) Removal of the propeller from the aircraft and inspection in accordance with 

these instructions may be performed by an Airframe and Powerplant Mechanic 

or international equivalent.

(2) If applicable, remove the spinner dome in accordance with Hartzell Propeller 

Inc. Owner's Manual 140 (61-00-40).

(3) Remove the propeller from the aircraft in accordance with Hartzell Propeller Inc. 

Owner's Manual 140 (61-00-40).

(4) Inspection of the Original Design Diaphragm

(a) Remove the A-63(B) 20 spline shaft nut and the A-121 hex head bolt.

(b) Pull the C-112-( ) piston unit forward to permit visual inspection of the 

original design diaphragm.

(c) Visually inspect the original design diaphragm for cracking or crazing.

(5) If cracking or crazing is found, 

(a) Further flight is not permitted. 

(b) Contact Hartzell Propeller Inc.

(6) If cracking or crazing is not found, 

(a) Reassemble the components in accordance with Hartzell Propeller Inc. 

Owner's Manual 140 (61-00-40). 

(b) Install the propeller on the aircraft in accordance with Hartzell Propeller 

Inc. Owner's Manual 140 (61-00-140).

(7) Make an entry in the logbook of compliance with the initial inspection in 

accordance with this Alert Service Bulletin.
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec 18/12 Page 7 of 8

B. Diaphragm Replacement

(1) At initial replacement, complete the Warranty/Compliance Form to order the 

replacement diaphragm and send the form to Hartzell Propeller Inc. Hartzell 

Propeller Inc. will provide a replacement diaphragm and labor coverage for the 

first replacement of the B-119-2 diaphragm. Refer to the Warranty/Compliance 

form for details.

(2) Removal of the propeller from the aircraft and replacement of the B-119-2 

diaphragm in accordance with these instructions may be performed by an 

Airframe and Powerplant Mechanic or international equivalent.

(3) If applicable, remove the spinner dome in accordance with Hartzell Propeller 

Inc. Owner's Manual 140 (61-00-40).

(4) Remove and replace the original design B-119-2 diaphragm in the hydraulic 

unit in accordance with Hartzell Propeller Inc. Owner's Manual 140 (61-00-40).

(5) Discard the original design B-119-2 diaphragm.

(6) Install the redesigned B-119-2 diaphragm so that the embossed side of the tab 

is facing the propeller and is visible after installation.

NOTE: The surface finish of the diaphragm may be shiny or dull or a 

combination of shiny and dull. The surface finish does not affect the 

installation of the diaphragm.

(7) Assemble the hydraulic unit and the propeller in accordance with Hartzell 

Propeller Inc. Owner's Manual 140 (61-00-40).

(8) Make an entry in the propeller logbook indicating compliance with this Alert 

Service Bulletin as terminating action for this Alert Service Bulletin.

(9) After the initial replacement, complete the Warranty/Compliance Form to 

indicate compliance and return the form to Hartzell Propeller Inc.

C. Contact Information

Hartzell Propeller Inc.

Attn.: Hartzell Product Support

One Propeller Place

Piqua, Ohio 45356-2634 USA

Phone: (001) 937.778.4379 

Fax: (001) 937.778.4391

E-mail: techsupport@hartzellprop.com
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN

HC-ASB-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASB-61-338 

Revision 1, dated Dec/12 Page 8 of 8

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HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN APPENDIX

HC-ASBA-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASBA-61-338 

Revision 1, dated Dec 18/12 Page 1 of 4

1. Eligibility

A. Hartzell Propeller Inc. steel hub propeller models HC-(1,D)2(X,V,MV)20-7, 

HC-(1,D)2(X,V,MV)20-8, and HC-(1,D)3(X,V,MV)20-8 are affected by this Alert 

Service Bulletin.

2. Recommended Service Facilities

A. Hartzell Propeller has a worldwide network of Recommended Service Facilities that 

are recommended by Hartzell Propeller for overhaul and repair of our products.

B. Each service facility must meet standard FAA requirements and additional Hartzell 

Propeller requirements before being recommended by Hartzell Propeller. Each 

service facility is audited by Hartzell Propeller Inc. to verify the continuation of the 

standards.

C. Hartzell Propeller recommends that you use one of these service facilities when 

having your propeller overhauled or repaired.

D. For a current list of Hartzell Propeller Inc. Recommended Service Facilities, contact 

Hartzell Product Support or refer to the Hartzell Propeller Inc. website at 

www.hartzellprop.com.

3. Special Pricing Program

A. Hartzell Propeller Inc. will supply ONE redesigned B-119-2 diaphragm for each 

affected propeller with the original design B-119-2 diaphragm installed. 

NOTE: Replacement of a redesigned diaphragm after the intial replacement of 

the original design diaphragm is not covered under Hartzell Propeller Inc. 

warranty.

B. Labor Charges

(1) Approximately 2 man hours are required for inspection of the original design 

diaphragm.

(2) Approximately 4 man hours are required for removal of the original design 

diaphragm and installation of the redesigned diaphragm.

Document No. HC-ASB-61-338 Date of Issue: Nov 02/12 Revision: 1 Rev. Date: Dec 18/12
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN APPENDIX

HC-ASBA-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASBA-61-338 

Revision 1, dated Dec 18/12 Page 2 of 4

C. Replacement Diaphragm Administration

(1) Complete the attached Alert Service Bulletin Warranty/Compliance Form. 

(a) Mail, e-mail, or fax (preferred method) compliance form to the attention 

of the Alert Service Bulletin Coordinator as indicated on the Alert Service 

Bulletin Warranty/Compliance Form. 

NOTE: The completed Alert Service Bulletin Warranty/Compliance Form 

must be recived before an order for a replacement diaphragm 

will be entered.

(b) Upon receipt of the Alert Service Bulletin Warranty/Compliance Form, 

Hartzell Propeller Inc. will enter an order for the replacement redesigned 

diaphragm.

(c) For labor charges:

1 Complete the Alert Service Bulletin Warranty/Compliance Form to 

confirm replacement of the diaphragm. 

2 Mail, e-mail, or fax (preferred method) compliance form, to the 

attention of the Alert Service Bulletin Coordinator as indicated on the 

Alert Service Bulletin Warranty/Compliance Form. 

C. Hartzell Propeller Inc. Contact Information

(1) Please complete the Warranty/Compliance form on page 3 for each propeller 

assembly identified in paragraph 1.A. Effectivity, of this Alert Service Bulletin 

and fax or mail to:

Hartzell Propeller Inc.

Attn.: Alert Service Bulletin 338 Coordinator

One Propeller Place

Piqua, Ohio 45356-2634 USA

Phone: 937.778.4379 

Fax: 937.778.4391 (Intl. 001.937.778.4391) 

(2) The report form on page 3 is also available in electronic format on the Hartzell 

Propeller Inc. website. Go to www.hartzellprop.com, Product Support, Recent 

Service Documents. 

Document No. HC-ASB-61-338 Date of Issue: Nov 02/12 Revision: 1 Rev. Date: Dec 18/12
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN APPENDIX

HC-ASBA-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASBA-61-338 

Revision 1, dated Dec 18/12 Page 3 of 4

Warranty/Compliance Form

Hartzell Propeller Inc. will provide labor coverage of 2 man hours at $75.00 per hour for 

inspection of an affected B-119-2 diaphragm.

Hartzell Propeller Inc. will provide one B-119-2 diaphragm and labor coverage of 4 man 

hours at $75.00 per hour for replacement of an affected B-119-2 diaphragm.

Owner Information: 

Name: Phone: 

Address: Fax: 

 E-Mail: 

City: Zip/Postal Code: 

State: Country: 

Service Facility: 

Company: Phone: 

Contact Name: Fax: 

Address: E-Mail: 

 

City: Zip/Postal Code: 

State: Country: 

Signature indicating Inspection or Replacement of the Diaphragm: ________________________________

Propeller Model: Propeller S/N: 

Labor for Inspection: Yes No

Order Replacement Diaphragm: Yes No Labor for Replacement: Yes No

Send this Warranty/Compliance Form to: 

 Hartzell Propeller Inc. Product Support

 Fax: (001) 937.778.4391

 E-Mail: warranty@hartzellprop.com

Hartzell use only - do not write below this line

Make Payment To:

Owner: Service Facility:

Other Payee:

Name: 

Address: 

 

City: 

State: 

Zip/Postal Code: 

Country: 

Warranty #: Authorized By: 

Document No. HC-ASB-61-338 Date of Issue: Nov 02/12 Revision: 1 Rev. Date: Dec 18/12
HARTZELL PROPELLER INC.

ALERT SERVICE BULLETIN APPENDIX

HC-ASBA-61-338

Propeller - Inspection of B-119-2 Diaphragm

Nov 02/12 HC-ASBA-61-338 

Revision 1, dated Dec 18/12 Page 4 of 4

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Document No. HC-ASB-61-338 Date of Issue: Nov 02/12 Revision: 1 Rev. Date: Dec 18/12