AD 58-18-03
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
Unsafe Condition
Flap chain tensioner barrel becoming completely unscrewed, causing damage to flaps, beams, and telescopic rods.
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Required Actions
Wirelock flap chain tensioners on Nos. 1, 2, and 3 flaps. Install Vickers-Armstrongs Modification D.2554.
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Compliance Time
November 1, 1958
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 744 and Viscount 745D models, all serial numbers.
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Federal Register Abstract
Flap Chain Tensioner Locking
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_58-18-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-18-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; VICKERS Model 700 Series Aircraft Subject: Flap Chain Tensioner Locking 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Limited) Model: Viscount 744 | Viscount 745D Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 58-18-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-18-03 SUBJECT HEADING: Airworthiness Directives; VICKERS Model 700 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-18-03 VICKERS: Applies to All Viscount 700 Series Aircraft. Compliance required by November 1, 1958. Following a recent case of damage to Nos. 1 and 2 flaps, beams and telescopic rods caused by a flap chain tensioner barrel becoming completely unscrewed on No. 1 flap chain, Vickers-Armstrongs recommends the wirelocking of flap chain tensioners on Nos. 1, 2 and 3 flaps. The British Air registration Board considers this mandatory. The FAA concurs with this action and considers compliance therewith mandatory. (Vickers-Armstrongs Modification D.2554 covers this subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_58-18-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-18-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; VICKERS Model 700 Series Aircraft Subject: Flap Chain Tensioner Locking 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: 58-18-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-18-03 SUBJECT HEADING: Airworthiness Directives; VICKERS Model 700 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-18-03 VICKERS: Applies to All Viscount 700 Series Aircraft. Compliance required by November 1, 1958. Following a recent case of damage to Nos. 1 and 2 flaps, beams and telescopic rods caused by a flap chain tensioner barrel becoming completely unscrewed on No. 1 flap chain, Vickers-Armstrongs recommends the wirelocking of flap chain tensioners on Nos. 1, 2 and 3 flaps. The British Air registration Board considers this mandatory. The FAA concurs with this action and considers compliance therewith mandatory. (Vickers-Armstrongs Modification D.2554 covers this subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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