AD 76-13-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft |
Unsafe Condition
Excessive removal of lightning strike protection bonding strap material during installation of wing tip strobe lights compromises aircraft lightning strike protection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Accomplish alteration to wing tips per DeHavilland Service Bulletin No. 6/318 or equivalent approved alteration. Compliance must be within 100 hours in service after the AD's effective date, with possible extension upon request and FAA approval.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 100 hours in service after the effective date of this AD
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Affected Aircraft
DeHavilland Model DHC-6 series Twin Otter aircraft serial nos. 1 thru 430 with wing tip strobe lighting installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Lightning Protection
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_76-13-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 76-13-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft Subject: Lightning Protection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/06/1976 Make: Viking Air Limited Model: DHC-6-1 | DHC-6-100 | DHC-6-200 | DHC-6-300 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 76-13-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2654 AD NUMBER: 76-13-06 SUBJECT HEADING: Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft ACTION: SUMMARY: DATES: Effective July 6, 1976. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 76-13-06 DEHAVILLAND: Amendment 39-2654. Applies to DeHavilland Model DHC- 6 series Twin Otter aircraft serial nos. 1 thru 430 incorporating wing tip strobe lighting. Compliance required as indicated: To restore the aircraft lightning strike protection to its original status, as a result of excessive removal of lightning strike protection bonding strap material, during the installation of the wing tip strobe lights, accomplish the following: (a) Within the next 100 hours in service after the effective date of this AD, accomplish the alteration to the aircraft wing tips in accordance with "Accomplishment Instructions" in DeHavilland DHC-6 Service Bulletin No. 6/318, dated January 3, 1975, or later revision, or equivalent alteration approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. (b) Upon request with substantiating data submitted through an FAA inspector, the compliance time specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. This amendment is effective July 6, 1976. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_76-13-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 76-13-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft Subject: Lightning Protection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/06/1976 Make: Viking Air Limited Model: DHC-6-1 | DHC-6-100 | DHC-6-200 | DHC-6-300 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: 76-13-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2654 AD NUMBER: 76-13-06 SUBJECT HEADING: Airworthiness Directives; de Havilland Model DHC- 6 Series Twin Otter Aircraft ACTION: SUMMARY: DATES: Effective July 6, 1976. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 76-13-06 DEHAVILLAND: Amendment 39-2654. Applies to DeHavilland Model DHC- 6 series Twin Otter aircraft serial nos. 1 thru 430 incorporating wing tip strobe lighting. Compliance required as indicated: To restore the aircraft lightning strike protection to its original status, as a result of excessive removal of lightning strike protection bonding strap material, during the installation of the wing tip strobe lights, accomplish the following: (a) Within the next 100 hours in service after the effective date of this AD, accomplish the alteration to the aircraft wing tips in accordance with "Accomplishment Instructions" in DeHavilland DHC-6 Service Bulletin No. 6/318, dated January 3, 1975, or later revision, or equivalent alteration approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. (b) Upon request with substantiating data submitted through an FAA inspector, the compliance time specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. This amendment is effective July 6, 1976. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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