AD 79-13-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Dornier Luftfahrt GmbH | Do 28 D | Airworthiness Directives; Dornier GmbH Model Do 28 D-2 Airplanes |
Unsafe Condition
Corrosion, accumulation of water, and pipeline chafing in the engine fire extinguishing system pipelines could lead to system failure.
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Required Actions
Inspect the engine fire extinguishing system for corrosion, water accumulation, and pipeline chafing within 25 hours time in service after the effective date. If corrosion or water is found, install a pipeline seal, incorporate pipeline water drainage holes, install a drain valve, and replace corrosion-prone pipelines with stainless steel between the engine fire extinguisher bottle and frame 6020. If pipeline chafing is found, incorporate anti-abrasive protection and install a pipeline securing clamp before further flight.
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Compliance Time
Within the next 25 hours time in service after the effective date of this AD
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Affected Aircraft
Dornier Luftfahrt GmbH Model Do 28 D-2 Skyservant airplanes, serial numbers 4050 and 4301 through 4307
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Federal Register Abstract
Engine Fire System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_79-13-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-13-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Dornier GmbH Model Do 28 D-2 Airplanes Subject: Engine Fire System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/11/1979 Make: Dornier Luftfahrt GmbH Model: Do 28 D Product Type: Aircraft Product Subtype: Small/Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 79-13-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3489 AD NUMBER: 79-13-06 SUBJECT HEADING: Airworthiness Directives; Dornier GmbH Model Do 28 D-2 Airplanes ACTION: SUMMARY: DATES: Effective July 11, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-13-06 DORNIER GmbH: Amendment 39-3489. Applies to Model Do 28 D-2 Skyservant airplanes, serial numbers 4050 and 4301 through 4307, certificated in all categories. Compliance required as indicated, unless already accomplished. To detect and eliminate corrosion and chafing of the engine fire extinguishing system pipelines, accomplish the following in accordance with Dornier Service Bulletin No. 2062-2828, dated April 1, 1977, or an FAA-approved equivalent: (a) Within the next 25 hours time in service after the effective date of this AD, inspect the engine fire extinghishing system for corrosion, accumulation of water, and pipeline chafing. (b) If corrosion or water accumulation is found during the inspection required by paragraph (a), before further flight, except as provided in paragraph (d) of this AD, modify the system by - (1) Installing a pipeline seal; (2) Incorporating pipeline water drainage holes; (3) Installing a drain valve; and (4) Replacing corrosion-prone pipelines with stainless steel pipelines between the engine fire extinghisher bottle and frame 6020. (c) If pipeline chafing is found during the inspection required by paragraph (a), before further flight, except as provided in paragraph (d), modify the system by - (1) Incorporating anti-abrasive protection; and (2) Installing a pipeline securing clamp. (d) Airplanes may be flown in accordance with FAR 21.197 and 21.199 to a base where the modifications required by paragraphs (b) and (c) of this can be performed. This amendment becomes effective July 11, 1979. FOOTER:
Document Text
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AD Final Rules - DRS_79-13-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-13-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Dornier GmbH Model Do 28 D-2 Airplanes Subject: Engine Fire System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/11/1979 Make: Dornier Luftfahrt GmbH Model: Do 28 D Product Type: Aircraft Product Subtype: Small/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: 79-13-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3489 AD NUMBER: 79-13-06 SUBJECT HEADING: Airworthiness Directives; Dornier GmbH Model Do 28 D-2 Airplanes ACTION: SUMMARY: DATES: Effective July 11, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-13-06 DORNIER GmbH: Amendment 39-3489. Applies to Model Do 28 D-2 Skyservant airplanes, serial numbers 4050 and 4301 through 4307, certificated in all categories. Compliance required as indicated, unless already accomplished. To detect and eliminate corrosion and chafing of the engine fire extinguishing system pipelines, accomplish the following in accordance with Dornier Service Bulletin No. 2062-2828, dated April 1, 1977, or an FAA-approved equivalent: (a) Within the next 25 hours time in service after the effective date of this AD, inspect the engine fire extinghishing system for corrosion, accumulation of water, and pipeline chafing. (b) If corrosion or water accumulation is found during the inspection required by paragraph (a), before further flight, except as provided in paragraph (d) of this AD, modify the system by - (1) Installing a pipeline seal; (2) Incorporating pipeline water drainage holes; (3) Installing a drain valve; and (4) Replacing corrosion-prone pipelines with stainless steel pipelines between the engine fire extinghisher bottle and frame 6020. (c) If pipeline chafing is found during the inspection required by paragraph (a), before further flight, except as provided in paragraph (d), modify the system by - (1) Incorporating anti-abrasive protection; and (2) Installing a pipeline securing clamp. (d) Airplanes may be flown in accordance with FAR 21.197 and 21.199 to a base where the modifications required by paragraphs (b) and (c) of this can be performed. This amendment becomes effective July 11, 1979. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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