AD 89-26-01
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
Partial loss of braking and potentially complete loss of braking due to failure of aluminum brake metering valve module shafts.
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Required Actions
Replace aluminum brake metering valve module shafts with steel shafts in accordance with Boeing Service Bulletin 767-32-0081. Alternate means of compliance or adjustment of compliance time may be used if approved by the FAA Manager, Seattle Aircraft Certification Office.
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Compliance Time
Within the next 750 landings after the effective date of this AD or prior to the accumulation of 15,000 landings, whichever occurs later, unless previously accomplished.
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Affected Aircraft
BOEING Model 767-200 Series, 767-300 Series, 767-300F Series airplanes listed in Boeing Service Bulletin 767-32-0081 dated April 27, 1989.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Brake Metering Valve
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_89-26-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 89-26-01 Document Type: AD Final Rules Docket Number: 89-NM-139-AD Subject Heading: Airworthiness Directives; BOEING Model 767 Series Airplanes Subject: Brake Metering Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/12/1990 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767-200 Series | 767-300 Series | 767-300F Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 89-26-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-139-AD AMENDMENT: 39-6416 AD NUMBER: 89-26-01 SUBJECT HEADING: Airworthiness Directives; BOEING Model 767 Series Airplanes ACTION: SUMMARY: DATES: Effective January 12, 1990. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 89-26-01 BOEING: Amendment 39-6416. Docket No. 89-NM-139-AD. Applicability: Model 767 series airplanes listed in Boeing Service Bulletin 767-32-0081, dated April 27, 1989, certificated in any category. Compliance: Required within the next 750 landings after the effective date of this AD or prior to the accumulation of 15,000 landings, whichever occurs later, unless previously accomplished. To prevent partial loss of braking and, potentially, the complete loss of braking, accomplish the following: A. Replace aluminum brake metering valve module shafts with steel shafts, in accordance with Boeing Service Bulletin 767-32-0081, dated April 27, 1989. 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 will either concur or comment 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 Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6416, AD 89-26-01) becomes effective on January 12, 1990. FOOTER:
Document Text
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AD Final Rules - DRS_89-26-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 89-26-01 Document Type: AD Final Rules Docket Number: 89-NM-139-AD Subject Heading: Airworthiness Directives; BOEING Model 767 Series Airplanes Subject: Brake Metering Valve Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/12/1990 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: 89-26-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-139-AD AMENDMENT: 39-6416 AD NUMBER: 89-26-01 SUBJECT HEADING: Airworthiness Directives; BOEING Model 767 Series Airplanes ACTION: SUMMARY: DATES: Effective January 12, 1990. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 89-26-01 BOEING: Amendment 39-6416. Docket No. 89-NM-139-AD. Applicability: Model 767 series airplanes listed in Boeing Service Bulletin 767-32-0081, dated April 27, 1989, certificated in any category. Compliance: Required within the next 750 landings after the effective date of this AD or prior to the accumulation of 15,000 landings, whichever occurs later, unless previously accomplished. To prevent partial loss of braking and, potentially, the complete loss of braking, accomplish the following: A. Replace aluminum brake metering valve module shafts with steel shafts, in accordance with Boeing Service Bulletin 767-32-0081, dated April 27, 1989. 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 will either concur or comment 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 Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6416, AD 89-26-01) becomes effective on January 12, 1990. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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