AD 64-26-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727-100C Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727-200F Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727 Series | BOEING Model 727 Series Aircraft |
| aircraft | The Boeing Company | 727C Series | BOEING Model 727 Series Aircraft |
Unsafe Condition
Failure of the SP-50 autopilot roll and pitch d.c. circuit breakers on panel P-18 could result in unintended autopilot activation or malfunction.
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Required Actions
Open the SP-50 autopilot roll and pitch d.c. circuit breakers on panel P-18 before further flight. Secure these circuit breakers in the off position at the first scheduled stop with available facilities and personnel. Reactivate the autopilot only after modification per Boeing Service Bulletin 22-7 or FAA-approved equivalent.
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Compliance Time
Before further flight after the effective date of this AD
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Affected Aircraft
Boeing Model 727 Series Aircraft including 727-100, 727-100C, 727-200, 727-200F, 727 Series, and 727C Series
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Federal Register Abstract
Autopilot
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_64-26-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-26-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727 Series Aircraft Subject: Autopilot Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: 727-100 Series | 727-100C Series | 727-200 Series | 727-200F Series | 727 Series | 727C Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 64-26-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-26-01 SUBJECT HEADING: BOEING Model 727 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-26-01 BOEING: Amdt 830 Part 39 (New) Federal Register November 18, 1964. Applies to Model 727 Series Aircraft. Compliance required as indicated. (a) Before further flight after the effective date of this AD, open the SP-50 autopilot roll and pitch d.c. circuit breakers on panel P-18. (b) At the first scheduled stop where facilities and personnel are available secure these circuit breakers in the off position. (c) Autopilot may be reactivated when modified in accordance with Boeing Service Bulletin 22-7 dated October 27, 1964, or an FAA Western Region Aircraft Engineering Division approved equivalent. This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated October 23, 1964. FOOTER:
Document Text
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AD Final Rules - DRS_64-26-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-26-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Model 727 Series Aircraft Subject: Autopilot Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: 727-100 Series | 727-100C Series | 727-200 Series | 727-200F Series | 727 Series | 727C 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: 64-26-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-26-01 SUBJECT HEADING: BOEING Model 727 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-26-01 BOEING: Amdt 830 Part 39 (New) Federal Register November 18, 1964. Applies to Model 727 Series Aircraft. Compliance required as indicated. (a) Before further flight after the effective date of this AD, open the SP-50 autopilot roll and pitch d.c. circuit breakers on panel P-18. (b) At the first scheduled stop where facilities and personnel are available secure these circuit breakers in the off position. (c) Autopilot may be reactivated when modified in accordance with Boeing Service Bulletin 22-7 dated October 27, 1964, or an FAA Western Region Aircraft Engineering Division approved equivalent. This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated October 23, 1964. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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