AD 92-02-12
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
Halon escape through the bulk cargo ventilation flapper valve when the fire extinguishing system is activated.
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Required Actions
Remove the bulk cargo ventilation flapper valve in accordance with Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991. An alternative method of compliance or adjustment of the compliance time may be used when approved by the FAA Manager, Seattle Aircraft Certification Office.
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Compliance Time
Within 4,000 flight hours after the effective date of this AD
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Affected Aircraft
Model 767 series airplanes listed in Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991, certificated in any category.
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Federal Register Abstract
Bulk Cargo Ventilation Flapper Valve
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_92-02-12.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-02-12 Document Type: AD Final Rules Docket Number: 91-NM-142-AD Subject Heading: Airworthiness Directives: BOEING Model 767 Series Airplanes Subject: Bulk Cargo Ventilation Flapper Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/02/1992 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767-200 Series | 767-300 Series | 767-300F Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 92-02-12 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-142-AD AMENDMENT: 39-8148 AD NUMBER: 92-02-12 SUBJECT HEADING: Airworthiness Directives: BOEING Model 767 Series Airplanes ACTION: SUMMARY: DATES: Effective March 2, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-02-12 BOEING: Amendment 39-8148. Docket No. 91-NM-142-AD. Applicability: Model 767 series airplanes, listed in Boeing Alert Service Bulletin 767- 21A0098, dated May 9, 1991, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent halon from escaping through the bulk cargo ventilation flapper valve when the fire extinguishing system is activated, accomplish the following: (a) Within 4,000 flight hours after the effective date of this AD, remove the bulk cargo ventilation flapper valve in accordance with Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991. (b) 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, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. (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. (d) The removal requirements of this AD shall be done in accordance with Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991. 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. Copies may be inspected at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington, or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C. (e) This amendment (39-8148, AD 92-02-12) becomes effective on March 2, 1992. FOOTER:
Document Text
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AD Final Rules - DRS_92-02-12.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-02-12 Document Type: AD Final Rules Docket Number: 91-NM-142-AD Subject Heading: Airworthiness Directives: BOEING Model 767 Series Airplanes Subject: Bulk Cargo Ventilation Flapper Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/02/1992 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: 92-02-12 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-NM-142-AD AMENDMENT: 39-8148 AD NUMBER: 92-02-12 SUBJECT HEADING: Airworthiness Directives: BOEING Model 767 Series Airplanes ACTION: SUMMARY: DATES: Effective March 2, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-02-12 BOEING: Amendment 39-8148. Docket No. 91-NM-142-AD. Applicability: Model 767 series airplanes, listed in Boeing Alert Service Bulletin 767- 21A0098, dated May 9, 1991, certificated in any category. Compliance: Required as indicated, unless previously accomplished. To prevent halon from escaping through the bulk cargo ventilation flapper valve when the fire extinguishing system is activated, accomplish the following: (a) Within 4,000 flight hours after the effective date of this AD, remove the bulk cargo ventilation flapper valve in accordance with Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991. (b) 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, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO. (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. (d) The removal requirements of this AD shall be done in accordance with Boeing Alert Service Bulletin 767-21A0098, dated May 9, 1991. 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. Copies may be inspected at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington, or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C. (e) This amendment (39-8148, AD 92-02-12) becomes effective on March 2, 1992. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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