AD 75-04-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-100 Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-200 Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-200C Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-300 Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-400 Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-500 Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-600 Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-700 Series | BOEING Model 737 Airplanes |
| aircraft | The Boeing Company | 737-800 Series | BOEING Model 737 Airplanes |
Unsafe Condition
Failure of the 'B' hydraulic system electrical wiring and other systems wiring which use a common wire bundle.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the 'B' hydraulic system electrical pump spliced wires in accordance with Boeing Service Bulletin 29-1004, Revision 1, dated April 2, 1969, or later FAA approved revisions, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 1,000 hours time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 737 airplanes listed under Group I in Boeing Service Bulletin 29-1004, Revision 1, dated April 2, 1969, or later FAA approved revisions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
'B' Hydraulic System Electrical Wiring
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_75-04-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-04-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 737 Airplanes Subject: 'B' Hydraulic System Electrical Wiring Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/10/1975 Make: The Boeing Company Model: 737-100 Series | 737-200 Series | 737-200C Series | 737-300 Series | 737-400 Series | 737-500 Series...Show more 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: 75-04-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2089 AD NUMBER: 75-04-08 SUBJECT HEADING: BOEING Model 737 Airplanes ACTION: SUMMARY: DATES: Effective March 10, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-04-08 BOEING: Amendment 39-2089. Applies to Boeing Model 737 airplanes, listed under Group I in Boeing Service Bulletin 29-1004, Revision 1, dated April 2, 1969, or later FAA approved revisions. Compliance required within the next 1,000 hours time in service after the effective date of this AD, unless already accomplished. To prevent failure of the "B" hydraulic system electrical wiring and other systems wiring which use a common wire bundle, replace the "B" hydraulic system electrical pump spliced wires in accordance with Boeing Service Bulletin 29-1004, Revision 1, dated April 2, 1969, or later FAA approved revisions, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. The documents may be examined at FAA Northwest Region, 9010 East Marginal Way, Seattle, Washington 98108. This amendment becomes effective March 10, 1975. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_75-04-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-04-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 737 Airplanes Subject: 'B' Hydraulic System Electrical Wiring Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/10/1975 Make: The Boeing Company Model: 737-100 Series | 737-200 Series | 737-200C Series | 737-300 Series | 737-400 Series | 737-500 Series...Show more 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: 75-04-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2089 AD NUMBER: 75-04-08 SUBJECT HEADING: BOEING Model 737 Airplanes ACTION: SUMMARY: DATES: Effective March 10, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-04-08 BOEING: Amendment 39-2089. Applies to Boeing Model 737 airplanes, listed under Group I in Boeing Service Bulletin 29-1004, Revision 1, dated April 2, 1969, or later FAA approved revisions. Compliance required within the next 1,000 hours time in service after the effective date of this AD, unless already accomplished. To prevent failure of the "B" hydraulic system electrical wiring and other systems wiring which use a common wire bundle, replace the "B" hydraulic system electrical pump spliced wires in accordance with Boeing Service Bulletin 29-1004, Revision 1, dated April 2, 1969, or later FAA approved revisions, or in an equivalent manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. The documents may be examined at FAA Northwest Region, 9010 East Marginal Way, Seattle, Washington 98108. This amendment becomes effective March 10, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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