AD 88-12-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 767-200 Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300 Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300F Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
Unsafe Condition
Structural failure of the vertical fin in the event of a failure of the aft pressure bulkhead.
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Required Actions
Install seal plates over the electrical wiring and hydraulic tubing cutouts on the fin-to-body skin in accordance with Boeing Service Bulletin 767-53-0025. An alternate means of compliance or adjustment of the compliance time may be used when approved by the FAA. Special flight permits may be issued under FAR 21.197 and 21.199 to operate airplanes to a base for compliance.
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Compliance Time
within 12 months after the effective date of this AD, unless previously accomplished
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Affected Aircraft
Boeing Model 767 series airplanes listed in Boeing Service Bulletin 767-53-0025, dated June 4, 1987, certificated in any category.
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Federal Register Abstract
Seal Plates
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_88-12-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-12-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING Model 767 Series Airplanes Subject: Seal Plates Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/01/1988 Make: The Boeing Company Model: 767-200 Series | 767-300 Series | 767-300F Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 88-12-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5936 AD NUMBER: 88-12-06 SUBJECT HEADING: Airworthiness Directives; BOEING Model 767 Series Airplanes ACTION: SUMMARY: DATES: Effective July 1, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-12-06 BOEING: Amendment 39-5936. Applies to Model 767 series airplanes, listed in Boeing Service Bulletin 767-53-0025, dated June 4, 1987, certificated in any category. Compliance required within 12 months after the effective date of this AD, unless previously accomplished. To prevent structural failure of the vertical fin in the event of a failure of the aft pressure bulkhead, accomplish the following: A. Install seal plates over the electrical wiring and hydraulic tubing cutouts on the fin-to-body skin in accordance with Boeing Service Bulletin 767-53-0025, dated June 4, 1987. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Seattle Aircraft Certification Office. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington. This amendment, 39-5936, becomes effective July 1, 1988. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_88-12-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-12-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING Model 767 Series Airplanes Subject: Seal Plates Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/01/1988 Make: The Boeing Company Model: 767-200 Series | 767-300 Series | 767-300F Series 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: 88-12-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5936 AD NUMBER: 88-12-06 SUBJECT HEADING: Airworthiness Directives; BOEING Model 767 Series Airplanes ACTION: SUMMARY: DATES: Effective July 1, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-12-06 BOEING: Amendment 39-5936. Applies to Model 767 series airplanes, listed in Boeing Service Bulletin 767-53-0025, dated June 4, 1987, certificated in any category. Compliance required within 12 months after the effective date of this AD, unless previously accomplished. To prevent structural failure of the vertical fin in the event of a failure of the aft pressure bulkhead, accomplish the following: A. Install seal plates over the electrical wiring and hydraulic tubing cutouts on the fin-to-body skin in accordance with Boeing Service Bulletin 767-53-0025, dated June 4, 1987. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Seattle Aircraft Certification Office. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington. This amendment, 39-5936, becomes effective July 1, 1988. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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