SERVICE BULLETIN No. 090 Alternator Thru-Bolts

Cessna R172 Hawk XP · Service Bulletins

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Overview

This Service Bulletin No. 090 addresses issues related to alternator thru-bolts in certain Cessna aircraft models, including the Cessna R172. It provides critical information regarding the alternators shipped by Hartzell Engine Technologies between February 15, 2022, and March 4, 2022. The bulletin outlines the compliance requirements for inspection and replacement of affected alternators to ensure continued airworthiness. It emphasizes the importance of using the most recent revision of the bulletin to avoid unsafe conditions that could lead to serious injury or property damage. The document is intended for aircraft owners and maintenance personnel responsible for ensuring the safety and reliability of the aircraft's electrical system.

Affected alternators were shipped between February 15, 2022, and March 4, 2022.
Compliance with the Service Bulletin is required prior to further flight.
Inspection of the alternator must be performed by qualified personnel.
Recurring inspections are required every 25 aircraft-hours, not to exceed 100 aircraft-hours from the initial inspection.
If defects are found, the alternator must be replaced before further flight.

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Source

Originally published by planepower.aero. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type: Service Bulletins
Year: 2022
Pages: 13
File size: 611 KB
Publisher: planepower.aero

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Pilot's Operating Handbook / AFM
Checklist
Maintenance Manual
Parts Catalog (IPC)
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Service Bulletins
Type Certificate (TCDS)

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In this document

Planning Information

This section outlines the effectivity of the Service Bulletin, indicating that alternators shipped by Hartzell Engine Technologies between February 15, 2022, and March 4, 2022, are affected. It includes a warning to verify whether an affected alternator is installed, as the list in Table 1 is not exhaustive.

Compliance Requirements

Compliance with the inspection and corrective actions outlined in the bulletin is mandatory before further flight. The bulletin specifies that the inspection must be performed by qualified personnel and provides a timeline for recurring inspections.

Accomplishment Instructions

This section details the steps for inspecting the alternator and taking corrective actions if necessary. It includes visual inspection criteria and options for replacing the alternator if defects are found.

Materials Required

The bulletin specifies that a new, overhauled, or repaired alternator of the part number removed, or a certified replacement part that is not affected by this Service Bulletin, is required for compliance.

Contact Information

For technical support regarding this Service Bulletin, contact Hartzell Engine Technologies at their provided phone number, fax, or email.

Safety notes

DO NOT USE OBSOLETE OR OUTDATED INFORMATION.
Failure to comply with this Service Bulletin may create an unsafe condition that may result in death or serious injury.

Full document text

SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts 1. This page transmits the revision of Service Bulletin (SB) 090 Rev. New to SB 090 Rev. A, dated May 25, 2022. A. SB 090 Rev. New, dated April 27, 2022 B. SB 090 Rev. A, dated May 25, 2022 2. FAA approval has been obtained on technical data in this publication that affects type design. 3. Changes are shown by a change bar in the left or right margin coinciding with the change on the affected page. 4. This revision is issued to change the following: A. Edits (1) Remove serial numbers that are accounted for from Table 2. Rev. A: 25 May 2022 SB 090 © 2022 - Hartzell Engine Technologies - All rights reserved Change Page i 2900 Selma Highway Montgomery, AL 36108 USA Tel: 334-386-5400 Fax: 334-386-5450 SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts Rev. A: 25 May 2022 SB 090 © 2022 - Hartzell Engine Technologies - All rights reserved Page 1 of 9 2900 Selma Highway Montgomery, AL 36108 USA Tel: 334-386-5400 Fax: 334-386-5450 1. Planning Information A. Effectivity (1) Alternator part numbers listed in Table 1 shipped by Hartzell Engine Technologies LLC between 15 Feb. 2022 and 04 Mar. 2022 are affected by this Service Bulletin (SB). (a) Alternators and engine/aircraft model/series affected by this SB are shown in Table 1. (b) Alternator serial numbers affected are shown in Table 2. NOTE: Table 1 is for reference only and is not an all-inclusive list of engines/aircraft affected by this SB. It is the responsibility of the owner/operator to verify whether an affected alternator may be installed. WARNING: DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE MOST RECENT REVISION OF THIS SERVICE BULLETIN. INFORMATION CONTAINED HEREIN MAY BE SIGNIFICANTLY CHANGED FROM EARLIER REVISIONS. FAILURE TO COMPLY WITH THIS 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 PLANE-POWER WEBSITE, WWW.PLANEPOWER.AERO, FOR THE MOST RECENT REVISION LEVEL OF THIS SERVICE BULLETIN. B. Concurrent Requirements (1) None C. Reason (1) Alternator P/Ns listed in Table 1 could contain thru-bolts with inadequate mechanical properties. (a) This condition may result in thru-bolt fracture and loss of clamping force between the alternator drive-end and slip-ring-end housings. (2) This SB is to advise the field of a known condition and to supply inspection criteria to identify affected alternators. D. Description (1) This Service Bulletin provides Instructions for Continued Airworthiness (ICA). SB 090 Rev. A: 25 May 2022 Page 2 of 9 © 2022 - Hartzell Engine Technologies - All rights reserved SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts E. Compliance (1) Compliance with section 3.A of this SB is required prior to further flight. (2) Compliance with the Accomplishment Instructions is the terminating action for this SB. F. Approval (1) FAA acceptance has been obtained on the technical data in this publication that affects type design. G. Manpower (1) Up to two (2) hours labor for alternator removal and installation. H. References (1) HET Manual OE-A2, Alternator and Starter Maintenance and Overhaul Manual (2) Continental Aerospace Technologies’ Manual M-0, Standard Practice for Spark Ignited Engines. (3) Continental Aerospace Technologies’ Engine Maintenance/Overhaul Manuals and Service Publications. (4) Lycoming Engines’ Engine Maintenance/Overhaul Manuals and Service Publications. (5) Applicable Aircraft Service Instructions or Maintenance Manual. (6) Applicable Aircraft AFM or POH. I. Weight and Balance (1) No Change 2. Materials Required A. One new, overhauled, or repaired alternator of the part number removed, or a certified new or overhauled replacement part number that is not affected by this Service Bulletin. Rev. A: 25 May 2022 SB 090 © 2022- Hartzell Engine Technologies - All rights reserved Page 3 of 9 SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts 3. Accomplishment Instructions WARNING 1: THIS PROCEDURE MUST BE PERFORMED BY COMPETENT AND QUALIFIED PERSONNEL WHO ARE FAMILIAR WITH THE AIRFRAME AND ENGINE SYSTEM MAINTENANCE. FAILURE TO DO SO MAY RESULT IN PHYSICAL INJURY, EQUIPMENT DAMAGE AND/OR ECONOMIC LOSS. WARNING 2: DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE MOST RECENT REVISION OF THIS SERVICE BULLETIN. INFORMATION CONTAINED HEREIN MAY BE SIGNIFICANTLY CHANGED FROM EARLIER REVISIONS. FAILURE TO COMPLY WITH THIS 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 PLANE-POWER WEBSITE FOR THE MOST RECENT REVISION LEVEL OF THIS SERVICE BULLETIN, WWW.PLANEPOWER.AERO. CAUTION: REFER TO THE APPLICABLE MANUFACTURER’S MAINTENANCE MANUALS O R S E R V I C E I N S T R U C T I O N S T O G A I N A C C E S S T O T H E A I R F R A M E O R ALTERNATOR. IN ADDITION, ANY PREFLIGHT OR IN-FLIGHT OPERATIONAL CHECKS REQUIRE USE OF THE APPROPRIATE AFM OR POH. A. Inspection (1) If previous compliance cannot be verified through aircraft or engine maintenance records, use the same references to determine if an affected alternator has been installed. Refer to section 1.A, Effectivity. (2) If effectivity of the alternator cannot be established using aircraft or engine maintenance records, utilize the applicable aircraft engine maintenance manual to gain access to the alternator and inspect the alternator against criteria found in section 1.A of this SB. (a) If the alternator is affected per section 1.A, continue to 3.B. - Corrective Action. (b) If the alternator is not affected per section 1.A, continue to 3.C. - Return to Service. SB 090 Rev. A: 25 May 2022

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Page 4 of 9 © 2022 - Hartzell Engine Technologies - All rights reserved SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts Thru-Bolt P/N HDW10020-3 1 of 3 ct. Thru-Bolt P/N HDW10020-3 3 of 3 ct. Thru-Bolt P/N HDW10020-3 2 of 3 ct. Figure 1 - Thru-Bolt Locations Rev. A: 25 May 2022 SB 090 © 2022- Hartzell Engine Technologies - All rights reserved Page 5 of 9 SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts B. Corrective Action (1) Option 1 (a) Gain access to the alternator in accordance with the latest revision of the aircraft and/or engine maintenance manual. (b) Visually inspect the three (3) thru-bolts (Fig.1) for evidence of cracks, broken safety-cable/ wire, and/or sheared bolt heads. If indications are present, proceed to 3.B.2 and replace the alternator prior to further flight. 1) If no cracks, broken safety cable/wire, or sheared thru-bolt heads are present, perform a recurring inspection every 25 aircraft-hours not to exceed one-hundred aircraft-hours from the initial inspection. 2) At an accumulated one-hundred aircraft-hours or at the next scheduled annual aircraft inspection, whichever occurs first, the alternator must be replaced. See Option 2. (2) Option 2 (a) Remove the alternator from the engine in accordance with the latest revision of the aircraft and/or engine manufacturer’s maintenance manual. (b) Install a new, overhauled, or repaired alternator in accordance with applicable engine manufacturer’s maintenance manual. Refer to 2.A, Materials Required. (c) Reconnect alternator electrical connections and cooling hardware in accordance with applicable aircraft manufacturer’s maintenance manual. Continue to 3.C. Return to Service. C. Return to Service (1) Close all access doors and covers opened to gain access to the alternator in accordance with applicable aircraft and/or engine maintenance manual. D. Maintenance Record (1) Make an appropriate logbook entry noting compliance with this Service Bulletin. SB 090 Rev. A: 25 May 2022 Page 6 of 9 © 2022 - Hartzell Engine Technologies - All rights reserved SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts 4. Contact Information A. Contact HET Product Support for all communications regarding the technical content of this Service Bulletin. (1) Phone +1.334.386.5400 (Option 2) (2) Fax +1.334.386.5450 (3) E-mail at techsupport@hartzell.aero (4) Address Hartzell Engine Technologies LLC - ATTN: Product Support 2900 Selma Highway Montgomery, AL 36108 USA Rev. A: 25 May 2022 SB 090 © 2022- Hartzell Engine Technologies - All rights reserved Page 7 of 9 SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts HET Alternator P/N Aircraft/Engine Make/Model Aircraft/Engine Model/Series ASG10001-13 DOFF10300JR DOFF10300BR Cessna 152 S/N 15279406 and up A152 S/N A1520735 and up F152 S/N F15201449 and up FA152 S/N FA1520337 and up 172 S/N 172269310 & up 172Q S/N 17275869 & up F172 S/N F17201640 & up R172 S/N R1722725 thru R1723454 FR172 S/N FR172-0001 thru FR17200675 172RG S/N 172RG0001 & up 177 S/N 17702673 thru 17702753 177RG S/N 177RG1267 thru 177RG1366 180 S/N 18052906 thru 18053203 182 S/N 18265966 & up F182 S/N F18200065 thru F18200169 R182 S/N R18200001 & up FR182 S/N FR18200001 thru FR18200070 T182 S/N 18267716 & up TR182 S/N 18200584 & up 185 S/N 18503459 & up U206 S/N U20601573 thru U20604468 TU206 S/N U20601573 thru U20604468 207 20700451 & up T207 20700451 & up 210 S/N 21059503 thru 21064897 ASG10001-17 ASG10001-17R Cessna 188, S/N 1880318 thru 18802348 A188, S/N 188031 & up T188C S/N 18803327T & up 207, S/N 20700228 thru 20700450 T207, S/N 20700228 thru 20700450 172R, S/N 17280001 & up 172S, S/N 172S8001 & up 182S, S/N 18280097 & up 182T, S/N 18280097 & up Table 1 - Alternator Part Number Effectivity (cont’d ) SB 090 Rev. A: 25 May 2022 Page 8 of 9 © 2022 - Hartzell Engine Technologies - All rights reserved SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts Alternator P/N Aircraft/Engine Make/Model Aircraft/Engine Model/Series ES-4000 Cessna 172, R172, 172RG, 182 ES-4009 Continental TSIO-360-A, -AB, -B, -BB, -C, -CB, -D, -DB, -E, -EB, -F, -FB, -G, -GB, -H, -HB, -JB, -KB, -LB, -MB, -NB, -PB, -RB, -SB ES-4024LP Continental O-200-A, -B O-300-C GTSIO-520-L,M, -N IO-240-A, -B IOF-240-B IO-360-C, -CB, -D, -DB, -ES, -G, -GB, -H, -HB, -J, -JB, -K, -KB, -LB IO-470-K, -N IO-520-BB, -CB, -D, -F, -K, -P IO-550-A, -B, -C, -D, -E, -F, -L, -N, -P, -R IOF-550-B, -C, -N, -P, -R LTSIO-360-E, -EB, -KB, -RB TSIO-360-A, -AB, -C, -CB, -D, -DB, -E, -F, -FB, -GB, -H, -HB, -J, -JB, -K, -KB, -LB, -MB, -RB, -SB TSIO-520- BB, -BE, -NB, -UB, -VB, -WB TSIO-550-A, -B, -C, -E, -G, -K, -N TSIOF-550-D, -J, -K TSIOL-550-A (cont’d) Table 1 - Alternator Part Number Effectivity Rev. A: 25 May 2022 SB 090 © 2022- Hartzell Engine Technologies - All rights reserved Page 9 of 9 SERVICE BULLETIN SERVICE BULLETIN No. 090 Alternator Thru-Bolts Affected Serial Numbers H-W012428 H-W022554 H-W012429 H-W022555 H-W012430 H-W022644 H-W022552 H-W022776 H-W022553 H-W022778 Table 2 - Alternator Serial Number Effectivity 1. Eligibility: A. Alternator part numbers listed in Table 1 of Service Bulletin (SL) 090 shipped by Hartzell Engine Technologies LLC between 15 Feb. 2022 and 04 Mar. 2022 are affected. B. Alternator serial numbers affected are shown in Table 2 of SB 090. 2. Commercial Assistance Program: The following will be provided with the submission of a completed Service Bulletin 090 Claim Form, copies of invoices showing breakdown of material and labor charges, and log book entries. Any commercial assistance or other consideration shall expire twelve (12) calender months from the original published date of Service Bulletin No. 090. A. Required material listed in section 2 of SB 090. B. Labor for inspection, removal, & installation of an affected aircraft alternator will be paid at a shop rate of $85 per hour, not to exceed US$170 per affected alternator. (1) Up to two (2) man hours of labor are needed for removal and replacement of the alternator assembly. 3. Commercial Assistance ADMINISTRATION: A. Complete the Service Bulletin SB 090 Claim Form attached to this appendix. (1) Mail, e-mail, or fax the SB 090 Claim Form to the attention of Product Support as indicated on the Service Bulletin Claim Form. B. Upon receipt of the Service Bulletin Claim Form, Hartzell Engine Technologies LLC HET will: (1) Ship the required material in accordance with section 2 (HET parts) to the service provider indicated. (2) The service provider must return proof of service within thirty (30) days or the service provider shall be invoiced for the HET supplied materials. C. For labor and parts listed in section 2: (1) Aircraft/engine service facility or owner must submit an invoice up to the amount specified in section 2, copies of logbook entries, and a completed SB 090 Claim Form for reimbursement (May be a copy of the original form provided). Rev. A: 25 May 2022 SB 090 © 2022 - Hartzell Engine Technologies. - All rights reserved Appendix page 1 of 3 SERVICE BULLETIN APPENDIX SERVICE BULLETIN No. 090 Alternator Thru-Bolts SB 090 Rev. A: 25 May 2022 Appendix page 2 of 3 © 2022 - Hartzell Engine Technologies. - All rights reserved 4. WARRANTY STATEMENT: A The sole warranty for the actions of SB 090 are contained in the HET Limited Warranty Policy issued with the purchase of each new/overhauled alternators (see terms and conditions therein). B. Commercial assistance may apply as stated in this Appendix. C. Issuance of SB 090 in no way constitutes an implied or expressed warranty of any kind. D. This publication does not imply or state any responsibility for the workmanship of any person or entity performing work or maintenance on the engine or aircraft electrical system. 5. CONTACT INFORMATION: A. Contact HET Product Support for all communications regarding the technical content of this Service Bulletin. (1) Phone +1.334.386.5400 (Option 2) (2) Fax +1.334.386.5410 (3) E-mail at techsupport@Hartzell.aero (4) Address Hartzell Engine Technologies LLC 2900 Selma Highway, Montgomery, AL 36108 USA SERVICE BULLETIN APPENDIX SERVICE BULLETIN No. 090 Alternator Thru-Bolts SB 090 CLAIM FORM Owner information Name: Date: Tel: Fax: Company Name: E-mail: Address: City: State: Postal Code: Country: Aircraft/Engine Service Facility information Name: Date: Tel: Fax: Company Name: E-mail: Address: City: State: Postal Code: Country: Aircraft Mfg: Model: Time in Service: S/N: Engine: Model: Time in Service: S/N: Component Information Nomenclature: Alternator Assembly Part Number: Serial Number: (Alternator) Date Removed: Part Time in Service: (Alternator) Original Date Installed: For RMA Number Send this SL 090 Claim Form to: Hartzell Engine Technologies Product Support Fax: +1.334.386.5410 E-mail: techsupport@hartzell.aero Hartzell Use Only - do not write below this line. Warranty No: Authorized by: RMA Number: (write in HET assigned RMA number) SERVICE BULLETIN APPENDIX SERVICE BULLETIN No. 090 Alternator Thru-Bolts Rev. A: 25 May 2022 SB 090 © 2022 - Hartzell Engine Technologies. - All rights reserved Appendix page 3 of 3

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