AD 92-12-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-7-1 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-100 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-101 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-102 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-103 | Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes |
Unsafe Condition
Reduced structural integrity of flap track no. 1 due to potential cracks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a one-time dye penetrant inspection of flap track no. 1 within 6 months after the effective date. If cracks are found or suspected, replace the flap track before further flight. If no cracks, modify the lower surface of the flap track within the same 6-month period.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 6 months after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
De Havilland Model DHC-7 series airplanes; serial numbers 1 through 23; certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Flap Track Dye Penetrant Inspection
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_92-12-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-12-04 Document Type: AD Final Rules Docket Number: 91-NM-267-AD Subject Heading: Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes Subject: Flap Track Dye Penetrant Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/24/1992 Make: Viking Air Limited Model: DHC-7-1 | DHC-7-100 | DHC-7-101 | DHC-7-102 | DHC-7-103 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 92-12-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-267-AD AMENDMENT: 39-8264 AD NUMBER: 92-12-04 SUBJECT HEADING: Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes ACTION: SUMMARY: DATES: Effective July 24, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-12-04 DE HAVILLAND, INC.: Amendment 39-8264. Docket No. 91-NM-267-AD. Applicability: de Havilland Model DHC-7 series airplanes; serial numbers 1 through 23; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent reduced structural integrity of flap track no. 1, accomplish the following: (a) Within 6 months after the effective date of this AD, perform a one-time dye penetrant inspection to detect cracks in flap track no. 1, in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. (b) If cracks are evident or suspected as a result of the inspection required by paragraph (a) of this AD, prior to further flight, replace the flap track in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. (c) If no cracks are evident or suspected as a result of the inspection required by paragraph (a) of this AD, within 6 months after the effective date of this AD, modify the lower surface of flap track no. 1 in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. (d) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, New York Aircraft Certification Office, ANE-170, FAA, Engine and Propeller Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, New York Aircraft Certification Office, ANE-170. NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the New York Aircraft Certification Office. (e) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (f) The inspections and repairs shall be done in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from de Havilland, Inc., Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the FAA, Engine and Propeller Directorate, New York Aircraft Certification Office, 181 South Franklin Avenue, Room 202, Valley Stream, New York; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC. (h) This amendment becomes effective on July 24, 1992. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_92-12-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-12-04 Document Type: AD Final Rules Docket Number: 91-NM-267-AD Subject Heading: Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes Subject: Flap Track Dye Penetrant Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/24/1992 Make: Viking Air Limited Model: DHC-7-1 | DHC-7-100 | DHC-7-101 | DHC-7-102 | DHC-7-103 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: 92-12-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-267-AD AMENDMENT: 39-8264 AD NUMBER: 92-12-04 SUBJECT HEADING: Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes ACTION: SUMMARY: DATES: Effective July 24, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-12-04 DE HAVILLAND, INC.: Amendment 39-8264. Docket No. 91-NM-267-AD. Applicability: de Havilland Model DHC-7 series airplanes; serial numbers 1 through 23; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent reduced structural integrity of flap track no. 1, accomplish the following: (a) Within 6 months after the effective date of this AD, perform a one-time dye penetrant inspection to detect cracks in flap track no. 1, in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. (b) If cracks are evident or suspected as a result of the inspection required by paragraph (a) of this AD, prior to further flight, replace the flap track in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. (c) If no cracks are evident or suspected as a result of the inspection required by paragraph (a) of this AD, within 6 months after the effective date of this AD, modify the lower surface of flap track no. 1 in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. (d) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, New York Aircraft Certification Office, ANE-170, FAA, Engine and Propeller Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, New York Aircraft Certification Office, ANE-170. NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the New York Aircraft Certification Office. (e) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (f) The inspections and repairs shall be done in accordance with de Havilland Service Bulletin 7-53-15, Revision A, dated November 27, 1981. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from de Havilland, Inc., Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the FAA, Engine and Propeller Directorate, New York Aircraft Certification Office, 181 South Franklin Avenue, Room 202, Valley Stream, New York; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC. (h) This amendment becomes effective on July 24, 1992. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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