AD 57-08-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS Model 744 and 745 Aircraft |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS Model 744 and 745 Aircraft |
Unsafe Condition
Horizontal stabilizer buckling incident due to insufficient strength of 20-gage Specification L.72 panels between Stations 34.36 and 99.13.
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Required Actions
Install placard stating 'TURBULENT AIR PENETRATION-165-KNOTS-FLAPS UP-LANDING GEAR UP' immediately. Install Vickers Modification D.1906 with 18-gage Specification L.73 skin panels between Stations 34.36 and 99.13 by August 31, 1957.
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Compliance Time
Effective immediately for placard installation; compliance with Vickers Modification D.1906 required by August 31, 1957.
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 744 and 745D aircraft.
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Federal Register Abstract
Horizontal Stabilizer
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_57-08-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 57-08-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; VICKERS Model 744 and 745 Aircraft Subject: Horizontal Stabilizer Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Vickers-Armstrongs (Aircraft Limited) Model: Viscount 744 | Viscount 745D Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 57-08-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 57-08-06 SUBJECT HEADING: Airworthiness Directives; VICKERS Model 744 and 745 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 57-08-06 VICKERS: Applies to Viscount 744 and 745 Type Aircraft. Compliance required as indicated. In view of a recent horizontal stabilizer buckling incident compliance with the following is required: 1. Effective immediately the following placard must be installed in full view of the pilot: "TURBULENT AIR PENETRATION-165-KNOTS-FLAPS UP-LANDING GEAR UP." (This placard required regardless of compliance with item 2.) 2. Compliance required by August 31, 1957, with Vickers Modification D.1906. This modification introduces new horizontal stabilizer skin panels of 18 gage, Specification L.73 material between Stations 34.36 and 99.13 in lieu of the 20-gage panels of Specification L.72. FOOTER:
Document Text
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AD Final Rules - DRS_57-08-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 57-08-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; VICKERS Model 744 and 745 Aircraft Subject: Horizontal Stabilizer Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Vickers-Armstrongs (Aircraft Limited) Model: Viscount 744 | Viscount 745D Product Type: Aircraft Product Subtype: Large 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: 57-08-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 57-08-06 SUBJECT HEADING: Airworthiness Directives; VICKERS Model 744 and 745 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 57-08-06 VICKERS: Applies to Viscount 744 and 745 Type Aircraft. Compliance required as indicated. In view of a recent horizontal stabilizer buckling incident compliance with the following is required: 1. Effective immediately the following placard must be installed in full view of the pilot: "TURBULENT AIR PENETRATION-165-KNOTS-FLAPS UP-LANDING GEAR UP." (This placard required regardless of compliance with item 2.) 2. Compliance required by August 31, 1957, with Vickers Modification D.1906. This modification introduces new horizontal stabilizer skin panels of 18 gage, Specification L.73 material between Stations 34.36 and 99.13 in lieu of the 20-gage panels of Specification L.72. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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