AD 56-02-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Twin Commander Aircraft LLC | 560-A | Airworthiness Directives; Aero Commander Model 560A Aircraft |
Unsafe Condition
Loss of an augmenter tube in flight due to inadequate support clamps at the aft end of the augmenter tubes and nacelle frames 148.75 and 158.75.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install new type support clamps at the aft end of the augmenter tubes and at nacelle frames 148.75 and 158.75. Install new support clips bolted through the augmenter tube at the aft end. Use parts furnished by Aero Design and follow Aero Commander Service Bulletin No. 31 for rework.
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Compliance Time
April 1, 1956
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Affected Aircraft
Twin Commander Aircraft LLC Model 560-A, serial numbers 231 through 269.
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Federal Register Abstract
Augmentor Tube Support Clamps
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_56-02-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 56-02-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aero Commander Model 560A Aircraft Subject: Augmentor Tube Support Clamps Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Twin Commander Aircraft LLC Model: 560-A Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 56-02-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 56-02-01 SUBJECT HEADING: Airworthiness Directives; Aero Commander Model 560A Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 56-02-01 AERO COMMANDER: Applies to Model 560A Aircraft, Serial Numbers 231 Through 269. Compliance required by April 1, 1956. Due to loss of an augmenter tube in flight, new type support clamps are required at the aft end of the augmenter tubes and at nacelle frames 148.75 and 158.75. Also, new support clips bolted through the augmenter tube at the aft end are required. Parts will be furnished by Aero Design and the rework is described in Aero Commander Service Bulletin No. 31. This supersedes CAA telegram of December 5, 1955, which required immediate inspection and installation of a 10-32 machine screw through the bell mouth and augmenter tube. FOOTER:
Document Text
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AD Final Rules - DRS_56-02-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 56-02-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aero Commander Model 560A Aircraft Subject: Augmentor Tube Support Clamps Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Twin Commander Aircraft LLC Model: 560-A Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 56-02-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 56-02-01 SUBJECT HEADING: Airworthiness Directives; Aero Commander Model 560A Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 56-02-01 AERO COMMANDER: Applies to Model 560A Aircraft, Serial Numbers 231 Through 269. Compliance required by April 1, 1956. Due to loss of an augmenter tube in flight, new type support clamps are required at the aft end of the augmenter tubes and at nacelle frames 148.75 and 158.75. Also, new support clips bolted through the augmenter tube at the aft end are required. Parts will be furnished by Aero Design and the rework is described in Aero Commander Service Bulletin No. 31. This supersedes CAA telegram of December 5, 1955, which required immediate inspection and installation of a 10-32 machine screw through the bell mouth and augmenter tube. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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