AD 79-21-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bendix Energy Controls Division | Fuel Injection Systems | Airworthiness Directives; BENDIX ENERGY CONTROLS DIVISION: Applies To Fuel Injection Systems |
| appliance | Bendix Energy Controls Division | Fuel Injection Systems | Airworthiness Directives; BENDIX ENERGY CONTROLS DIVISION: Applies To Fuel Injection Systems |
Unsafe Condition
Failure of the lock nut to properly engage and crimp the stem could result in fuel flow cutoff to the engine and subsequent loss of power.
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Required Actions
Inspect the lock nut for proper engagement and crimp the stem in accordance with the applicable Bendix Energy Controls Division Service Bulletins (RS-68, RS-69, or RS-70).
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Compliance Time
within the next twenty-five (25) hours of aircraft time in service, or within the next thirty (30) calendar days from the effective date of this AD, whichever occurs first
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Affected Aircraft
Bendix Energy Controls Division Fuel Injection Systems with specified model and parts list numbers, installed on Lycoming and Continental engine models including IO-320 Series, IO-360 Series, TSIO-520-L, and others as listed.
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Federal Register Abstract
Fuel Injection Systems
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_79-21-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-21-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BENDIX ENERGY CONTROLS DIVISION: Applies To Fuel Injection Systems Subject: Fuel Injection Systems Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/24/1979 Make: Bendix Energy Controls Division Model: Fuel Injection Systems Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-21-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3593 AD NUMBER: 79-21-08 SUBJECT HEADING: Airworthiness Directives; BENDIX ENERGY CONTROLS DIVISION: Applies To Fuel Injection Systems ACTION: SUMMARY: DATES: Effective October 24, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-21-08 BENDIX ENERGY CONTROLS DIVISION: Amendment 39-3593. Applies to the below listed fuel injection systems installed in aircraft certificated in all categories: Model No. Parts List No. RSA-5AB1 2524199-9, 2524216-8 2524254-7, 2524262-6 2524378-7, 2524712-3/-5/-6 RSA-5AD1 2524054-7/-8, 2524147-9/-10 2524171-7/-8, 2524189-7/-8 2524213-7/-8, 2524242-6/-7 2524243-7/-8, 2524291-7/-8 2524297-6/-7, 2524307-6/-7 2524328-6/-7, 2524341-6/-7 2524348-7/-8, 2524359-6/-7 2524450-5/-6, 2524459-5/-6 2524475-4/-5, 2524550-4/-5 2524575-4/-5, 2524590-4/-5 2524592-4/-5, 2524623-4/-5 2524634-4/-5, 2524640-4/-5 2524673-4/-5, 2524682-4/-5 2524723-4/-5, 2524742-4/-5 2524752-3/-4 RSA-7AA1 2524347-4/-6 RSA-7DA1 2524624-1/-2 RSA-10AD1 2524030-7/-8, 2524152-6/-7 2524163-10/-11, 2524175-6/-7 2524255-6/-7, 2524256-8/-9 2524311-6/-7, 2524757-3/-4 RSA-10DB1 2524267-6/-7, 2524275-11/-12 2524276-7/-8, 2524593-4/-5 2524649-6/-7 RSA-10DB2 2524501-5/-6, 2524708-4/-5 RSA-10ED1 2524273-8/-9, 2524298-8/-9 2524366-6/-7, 2524420-7/-8 2524422-5/-6, 2524477-7/-8 2524491-5/-6, 2524492-4/-5 2524500-5/-6, 2524556-5/-6 2524582-4/-5, 2524601-4/-5 2524693-4/-5/-6/-7, 2524709-3/-4 2524733-3/-4 RSA-10ED2 2524791-1/-2/-3 These fuel injection systems are installed on, but not limited to, the engine models listed below: Lycoming IO-320 Series AIO-320 Series AEIO-320 Series IO-360 Series HIO-360 Series AIO-360 Series AEIO-360 Series TIO-360 Series IGO-480 Series IO-540 Series HIO-540 Series AEIO-540 Series IGO-540 Series IVO-540 Series TIO-540 Series TIO-541 Series TIGO-541 Series IO-720 Series Continental TSIO-520-L TSIO-520-LB TSIO-520-WB Compliance is required within the next twenty-five (25) hours of aircraft time in service, or within the next thirty (30) calendar days from the effective date of this AD, whichever occurs first. To prevent a fuel flow cutoff to the engine and subsequent loss of power, inspect the lock nut for proper engagement and crimp the stem in accordance with the following Bendix Energy Controls Division Service Bulletins: 1. Service Bulletin No. RS-68 dated August 20, 1979 applicable to the Series RSA-5 and RSA-10 models; 2. Service Bulletin No. RS-69 dated August 20, 1979 applicable to the RSA-7AA1 model; or 3. Service Bulletin No. RS-70 dated August 20, 1979 applicable to the RSA-7DA1 model. This amendment becomes effective October 24, 1979 as to all persons except those to whom it was made immediately effective by the airmail letter dated August 28, 1979, which contained this amendment. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_79-21-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-21-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BENDIX ENERGY CONTROLS DIVISION: Applies To Fuel Injection Systems Subject: Fuel Injection Systems Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/24/1979 Make: Bendix Energy Controls Division Model: Fuel Injection Systems Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-21-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3593 AD NUMBER: 79-21-08 SUBJECT HEADING: Airworthiness Directives; BENDIX ENERGY CONTROLS DIVISION: Applies To Fuel Injection Systems ACTION: SUMMARY: DATES: Effective October 24, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-21-08 BENDIX ENERGY CONTROLS DIVISION: Amendment 39-3593. Applies to the below listed fuel injection systems installed in aircraft certificated in all categories: Model No. Parts List No. RSA-5AB1 2524199-9, 2524216-8 2524254-7, 2524262-6 2524378-7, 2524712-3/-5/-6 RSA-5AD1 2524054-7/-8, 2524147-9/-10 2524171-7/-8, 2524189-7/-8 2524213-7/-8, 2524242-6/-7 2524243-7/-8, 2524291-7/-8 2524297-6/-7, 2524307-6/-7 2524328-6/-7, 2524341-6/-7 2524348-7/-8, 2524359-6/-7 2524450-5/-6, 2524459-5/-6 2524475-4/-5, 2524550-4/-5 2524575-4/-5, 2524590-4/-5 2524592-4/-5, 2524623-4/-5 2524634-4/-5, 2524640-4/-5 2524673-4/-5, 2524682-4/-5 2524723-4/-5, 2524742-4/-5 2524752-3/-4 RSA-7AA1 2524347-4/-6 RSA-7DA1 2524624-1/-2 RSA-10AD1 2524030-7/-8, 2524152-6/-7 2524163-10/-11, 2524175-6/-7 2524255-6/-7, 2524256-8/-9 2524311-6/-7, 2524757-3/-4 RSA-10DB1 2524267-6/-7, 2524275-11/-12 2524276-7/-8, 2524593-4/-5 2524649-6/-7 RSA-10DB2 2524501-5/-6, 2524708-4/-5 RSA-10ED1 2524273-8/-9, 2524298-8/-9 2524366-6/-7, 2524420-7/-8 2524422-5/-6, 2524477-7/-8 2524491-5/-6, 2524492-4/-5 2524500-5/-6, 2524556-5/-6 2524582-4/-5, 2524601-4/-5 2524693-4/-5/-6/-7, 2524709-3/-4 2524733-3/-4 RSA-10ED2 2524791-1/-2/-3 These fuel injection systems are installed on, but not limited to, the engine models listed below: Lycoming IO-320 Series AIO-320 Series AEIO-320 Series IO-360 Series HIO-360 Series AIO-360 Series AEIO-360 Series TIO-360 Series IGO-480 Series IO-540 Series HIO-540 Series AEIO-540 Series IGO-540 Series IVO-540 Series TIO-540 Series TIO-541 Series TIGO-541 Series IO-720 Series Continental TSIO-520-L TSIO-520-LB TSIO-520-WB Compliance is required within the next twenty-five (25) hours of aircraft time in service, or within the next thirty (30) calendar days from the effective date of this AD, whichever occurs first. To prevent a fuel flow cutoff to the engine and subsequent loss of power, inspect the lock nut for proper engagement and crimp the stem in accordance with the following Bendix Energy Controls Division Service Bulletins: 1. Service Bulletin No. RS-68 dated August 20, 1979 applicable to the Series RSA-5 and RSA-10 models; 2. Service Bulletin No. RS-69 dated August 20, 1979 applicable to the RSA-7AA1 model; or 3. Service Bulletin No. RS-70 dated August 20, 1979 applicable to the RSA-7DA1 model. This amendment becomes effective October 24, 1979 as to all persons except those to whom it was made immediately effective by the airmail letter dated August 28, 1979, which contained this amendment. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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