AD 64-10-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-200 | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300B Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300C Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-400 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 720 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 720B Series | BOEING Models 707 and 720 Series Aircraft |
Unsafe Condition
Failure of stabilizer limit switches (Boeing P/N 66-11056 or Control Company of America P/N 1HS6) or insufficient operating torque in horizontal stabilizer electrical trim limit switches (Control Company of America P/N H10-59) could lead to impaired airplane controllability during horizontal stabilizer trim malfunction.
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Required Actions
Replace existing stabilizer limit switches with Control Company of America P/N H10-1001 and associated mounting brackets/cams per Boeing SB 1635(R-1) Part I for most serials except 18393-18395, 18451-18452. For those specific serials, replace H10-59 switches with H10-1001 per SB 1635(R-1) Part II within 1,000 hours time-in-service.
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Compliance Time
Within 3,000 hours' time in service after June 5, 1964 for most serials; within 1,000 hours' time in service after June 5, 1964 for serials 18393-18395, 18451-18452
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Affected Aircraft
Boeing Models 707 and 720 Series Aircraft with serial numbers 17586 through 17612, 17614 through 17652, 17658 through 17690, 17692 through 17724, 17903 through 17906, 17918 through 17930, 18012 through 18037, 18054 through 18063, 18067 through 18071, 18083 through 18087, 18165 through 18167, 18245 through 18251, 18334 through 18339, 18351 through 18357, 18372 through 18375, 18378, 18381 through 18395, 18411, 18414 through 18422, 18424, 18425, 18451 through 18452.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Stabilizer Limit Switches
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_64-10-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-10-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Models 707 and 720 Series Aircraft Subject: Stabilizer Limit Switches Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/05/1964 Make: The Boeing Company Model: 707-100 Long Body | 707-100B Long Body | 707-100B Short Body | 707-200 | 707-300 Series | 707-300B S...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: 64-10-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-10-02 SUBJECT HEADING: BOEING Models 707 and 720 Series Aircraft ACTION: SUMMARY: DATES: Effective June 5, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-10-02 BOEING: Amdt. 726 Part 507 Federal Register May 6, 1964. Applies to Models 707 and 720 Series Aircraft Serial Numbers 17586 through 17612, 17614 through 17652, 17658 through 17690, 17692 through 17724, 17903 through 17906, 17918 through 17930, 18012 through 18037, 18054 through 18063, 18067 through 18071, 18083 through 18087, 18165 through 18167, 18245 through 18251, 18334 through 18339, 18351 through 18357, 18372 through 18375, 18378, 18381 through 18395, 18411, 18414 through 18422, 18424, 18425, 18451 through 18452. Compliance required as indicated unless already accomplished. To provide improved airplane controllability in case of horizontal stabilizer electrical trim malfunction, and to provide a switch with sufficient operating torque to assure switch operation necessary for horizontal stabilizer electrical trim operation in both directions, accomplish the following: (a) Within 3,000 hours' time in service after the effective date of this AD on all the above listed airplanes, except Serial Numbers 18393 through 18395, 18451, and 18452, remove the existing stabilizer limit switches (Boeing P/N 66-11056 or Control Company of America P/N 1HS6) and associated mounting brackets and install new limit switches Control Company of America P/N H10-1001 and associated mounting brackets and cams. This installation shall be accomplished in accordance with Boeing Service Bulletin No. 1635(R-1), Paragraph 3, Part I, or an FAA approved equivalent. (b) Within 1,000 hours' time in service after the effective date of this AD on airplane Serial Numbers 18393 through 18395, 18451 and 18452, replace the four horizontal stabilizer electrical trim limit switches Control Company of America P/N H10-59 with Control Company of America P/N H10-1001 switches in accordance with Boeing Service Bulletin No. 1635 (R-1), Paragraph 3, Part II, or an FAA approved equivalent. (Boeing Service Bulletin No. 1635(R-1) covers this same subject.) This directive effective June 5, 1964. FOOTER:
Document Text
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AD Final Rules - DRS_64-10-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-10-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BOEING Models 707 and 720 Series Aircraft Subject: Stabilizer Limit Switches Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/05/1964 Make: The Boeing Company Model: 707-100 Long Body | 707-100B Long Body | 707-100B Short Body | 707-200 | 707-300 Series | 707-300B S...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: 64-10-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 64-10-02 SUBJECT HEADING: BOEING Models 707 and 720 Series Aircraft ACTION: SUMMARY: DATES: Effective June 5, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-10-02 BOEING: Amdt. 726 Part 507 Federal Register May 6, 1964. Applies to Models 707 and 720 Series Aircraft Serial Numbers 17586 through 17612, 17614 through 17652, 17658 through 17690, 17692 through 17724, 17903 through 17906, 17918 through 17930, 18012 through 18037, 18054 through 18063, 18067 through 18071, 18083 through 18087, 18165 through 18167, 18245 through 18251, 18334 through 18339, 18351 through 18357, 18372 through 18375, 18378, 18381 through 18395, 18411, 18414 through 18422, 18424, 18425, 18451 through 18452. Compliance required as indicated unless already accomplished. To provide improved airplane controllability in case of horizontal stabilizer electrical trim malfunction, and to provide a switch with sufficient operating torque to assure switch operation necessary for horizontal stabilizer electrical trim operation in both directions, accomplish the following: (a) Within 3,000 hours' time in service after the effective date of this AD on all the above listed airplanes, except Serial Numbers 18393 through 18395, 18451, and 18452, remove the existing stabilizer limit switches (Boeing P/N 66-11056 or Control Company of America P/N 1HS6) and associated mounting brackets and install new limit switches Control Company of America P/N H10-1001 and associated mounting brackets and cams. This installation shall be accomplished in accordance with Boeing Service Bulletin No. 1635(R-1), Paragraph 3, Part I, or an FAA approved equivalent. (b) Within 1,000 hours' time in service after the effective date of this AD on airplane Serial Numbers 18393 through 18395, 18451 and 18452, replace the four horizontal stabilizer electrical trim limit switches Control Company of America P/N H10-59 with Control Company of America P/N H10-1001 switches in accordance with Boeing Service Bulletin No. 1635 (R-1), Paragraph 3, Part II, or an FAA approved equivalent. (Boeing Service Bulletin No. 1635(R-1) covers this same subject.) This directive effective June 5, 1964. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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