AD 60-02-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | Airworthiness Directives; BOEING Model 707 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Long Body | Airworthiness Directives; BOEING Model 707 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Short Body | Airworthiness Directives; BOEING Model 707 Series Aircraft |
| aircraft | The Boeing Company | 707-200 | Airworthiness Directives; BOEING Model 707 Series Aircraft |
| aircraft | The Boeing Company | 707-300 Series | Airworthiness Directives; BOEING Model 707 Series Aircraft |
| aircraft | The Boeing Company | 707-300B Series | Airworthiness Directives; BOEING Model 707 Series Aircraft |
| aircraft | The Boeing Company | 707-300C Series | Airworthiness Directives; BOEING Model 707 Series Aircraft |
| aircraft | The Boeing Company | 707-400 Series | Airworthiness Directives; BOEING Model 707 Series Aircraft |
Unsafe Condition
Failure of the Mach trim warning lights and Mach warning and fire warning bell systems could result in inadequate indication of system malfunctions or failure to alert the flight crew of critical conditions.
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Required Actions
Remove and rework the Mach and fire warning bell support bracket (Boeing P/N 69-1640) to accept redesigned components (Boeing P/N 69-50013). Install two diodes (Boeing assembly 69-43070-6) in the Mach trim system resistor box and revise the indicating light circuitry.
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Compliance Time
by April 30, 1960
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Affected Aircraft
Boeing Model 707 Series aircraft with serial numbers 17586 through 17591, 17609 through 17612, 17628 through 17652, 17658 through 17672, 17691, 17696 through 17702, 17925 through 17927.
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Federal Register Abstract
Mach Trim Warning Lights
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_60-02-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 60-02-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING Model 707 Series Aircraft Subject: Mach Trim Warning Lights Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 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: 60-02-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 60-02-04 SUBJECT HEADING: Airworthiness Directives; BOEING Model 707 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 60-02-04 BOEING: Amdt. 86 Part 507 Federal Register January 21, 1960. Applies to the following Model 707 Series aircraft only: Serial Numbers 17586 through 17591, 17609 through 17612, 17628 through 17652, 17658 through 17672, 17691, 17696 through 17702, 17925 through 17927. To increase the capabilities and reliability of the Mach trim warning lights and the Mach warning and fire warning bell systems the following modification(s) shall be accomplished as indicated: Unless already completed, the following shall be accomplished by April 30, 1960. (a) Remove Mach and fire warning bell support bracket, Boeing P/N 69-1640, from below flight engineer's table and rework to accept redesigned warning bell assembly Boeing P/N 69-50013 or equivalent. Install reworked bracket and redesigned components as shown in Boeing Drawing 65-2801. (Boeing Service Bulletin No. 444 pertains to this same subject.) (b) Install two diodes, Boeing assembly 69-43070-6, in the Mach trim system resistor box and revise the indicating light circuitry such that this light will indicate when the system is not turned on as well as indicating Mach trim system malfunctions. (Boeing Service Bulletin No. 474 (R-1) describes a satisfactory modification.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_60-02-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 60-02-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BOEING Model 707 Series Aircraft Subject: Mach Trim Warning Lights Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 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: 60-02-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 60-02-04 SUBJECT HEADING: Airworthiness Directives; BOEING Model 707 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 60-02-04 BOEING: Amdt. 86 Part 507 Federal Register January 21, 1960. Applies to the following Model 707 Series aircraft only: Serial Numbers 17586 through 17591, 17609 through 17612, 17628 through 17652, 17658 through 17672, 17691, 17696 through 17702, 17925 through 17927. To increase the capabilities and reliability of the Mach trim warning lights and the Mach warning and fire warning bell systems the following modification(s) shall be accomplished as indicated: Unless already completed, the following shall be accomplished by April 30, 1960. (a) Remove Mach and fire warning bell support bracket, Boeing P/N 69-1640, from below flight engineer's table and rework to accept redesigned warning bell assembly Boeing P/N 69-50013 or equivalent. Install reworked bracket and redesigned components as shown in Boeing Drawing 65-2801. (Boeing Service Bulletin No. 444 pertains to this same subject.) (b) Install two diodes, Boeing assembly 69-43070-6, in the Mach trim system resistor box and revise the indicating light circuitry such that this light will indicate when the system is not turned on as well as indicating Mach trim system malfunctions. (Boeing Service Bulletin No. 474 (R-1) describes a satisfactory modification.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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