AD 50-16-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-6 | Airworthiness Directives; DOUGLAS All Model DC-6 Airplanes |
| aircraft | The Boeing Company | DC-6A | Airworthiness Directives; DOUGLAS All Model DC-6 Airplanes |
| aircraft | The Boeing Company | DC-6B | Airworthiness Directives; DOUGLAS All Model DC-6 Airplanes |
Unsafe Condition
Failure of the propeller reverse mechanism or throttle system due to inadequate locking of the throttle latch assembly and improper alignment of the arm-throttle reverse assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct an electrical and mechanical functional check of the propeller reverse mechanism and throttle system. Rework the fish mouth in the 2345735 throttle latch assembly or replace the 2333338 arm-throttle reverse with new 'F' change parts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
as soon as possible but in any event not later than January 1, 1951
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas DC-6, DC-6A, DC-6B airplanes with serial numbers below 43149
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Federal Register Abstract
Propeller Reverse Mechanism
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_50-16-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 50-16-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; DOUGLAS All Model DC-6 Airplanes Subject: Propeller Reverse Mechanism Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: DC-6 | DC-6A | DC-6B Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 50-16-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 50-16-01 SUBJECT HEADING: Airworthiness Directives; DOUGLAS All Model DC-6 Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 50-16-01 DOUGLAS: Applies to All Model DC-6 Airplanes Below Serial Number 43149. Compliance required as soon as possible but in any event not later than January 1, 1951. 1. Conduct electrical and mechanical functional check of propeller reverse mechanism, throttle system. 2. (a) Rework fish mouth in the 2345735 throttle latch assembly to assure a more positive lock. (b) Rotate the 2333338 arm-throttle reverse 20 degrees clockwise on the shaft of the 4333339 lock assembly or replace with new 2333338 "F" change parts. (Douglas General Service Letters DC-6 No. 19, dated November 18, 1949, and DC-6 No. 23, dated January 20, 1950, cover the above two items.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_50-16-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 50-16-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; DOUGLAS All Model DC-6 Airplanes Subject: Propeller Reverse Mechanism Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: DC-6 | DC-6A | DC-6B 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: 50-16-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 50-16-01 SUBJECT HEADING: Airworthiness Directives; DOUGLAS All Model DC-6 Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 50-16-01 DOUGLAS: Applies to All Model DC-6 Airplanes Below Serial Number 43149. Compliance required as soon as possible but in any event not later than January 1, 1951. 1. Conduct electrical and mechanical functional check of propeller reverse mechanism, throttle system. 2. (a) Rework fish mouth in the 2345735 throttle latch assembly to assure a more positive lock. (b) Rotate the 2333338 arm-throttle reverse 20 degrees clockwise on the shaft of the 4333339 lock assembly or replace with new 2333338 "F" change parts. (Douglas General Service Letters DC-6 No. 19, dated November 18, 1949, and DC-6 No. 23, dated January 20, 1950, cover the above two items.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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