AD 58-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 1A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 2A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 5BA | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 6BA | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 7AXC | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8A | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
| aircraft | de Havilland Aircraft Co., Ltd., The | D.H. 104 Dove Series 8AXC | Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft |
Unsafe Condition
The fire extinguisher system may become inoperative during an emergency wheels-up landing when the ground/flight switch is in the 'Ground' position, increasing fire risk.
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Required Actions
Install Dove Modification 655 to provide an electrical supply from the battery side of the ground/flight switch, ensuring the fire extinguisher system remains operative even when the switch is in the 'Ground' position.
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Compliance Time
January 1, 1959
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Affected Aircraft
de Havilland Model 104 'Dove' Series Aircraft, including D.H. 104 Dove Series 1A, 2A, 5A, and others as listed.
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Federal Register Abstract
Fire Extinguisher Electrical Circuit
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_58-20-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-20-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft Subject: Fire Extinguisher Electrical Circuit Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: de Havilland Aircraft Co., Ltd., The Model: D.H. 104 Dove Series 1A | D.H. 104 Dove Series 2A | D.H. 104 Dove Series 5A | D.H. 104 Dove Series 5...Show more 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: 58-20-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-20-02 SUBJECT HEADING: Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-20-02 de HAVILLAND: Applies to All Model 104 "Dove" Aircraft. Compliance required by January 1, 1959. In an emergency such as a wheels up landing, the placing of the ground/flight switch on the "Ground" position to minimize fire risk would isolate the fire extinguisher system. Dove Modification 655 has therefore been introduced which provides an electrical supply to the fire extinguisher circuit from the battery side of the ground/flight switch, even when the switch is in the "Ground" position, thus ensuring that the fire extinguisher system is operative at all times. The British Air Registration Board considers this mandatory. The FAA concurs with this action and considers compliance therewith mandatory. (de Havilland TNS CT (104) No. 153 covers the same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_58-20-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 58-20-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft Subject: Fire Extinguisher Electrical Circuit Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: de Havilland Aircraft Co., Ltd., The Model: D.H. 104 Dove Series 1A | D.H. 104 Dove Series 2A | D.H. 104 Dove Series 5A | D.H. 104 Dove Series 5...Show more 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: 58-20-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 58-20-02 SUBJECT HEADING: Airworthiness Directives; de Havilland Model 104 "Dove" Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 58-20-02 de HAVILLAND: Applies to All Model 104 "Dove" Aircraft. Compliance required by January 1, 1959. In an emergency such as a wheels up landing, the placing of the ground/flight switch on the "Ground" position to minimize fire risk would isolate the fire extinguisher system. Dove Modification 655 has therefore been introduced which provides an electrical supply to the fire extinguisher circuit from the battery side of the ground/flight switch, even when the switch is in the "Ground" position, thus ensuring that the fire extinguisher system is operative at all times. The British Air Registration Board considers this mandatory. The FAA concurs with this action and considers compliance therewith mandatory. (de Havilland TNS CT (104) No. 153 covers the same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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