AD 50-18-02

AD Final Rules - DRS_50-18-02.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
50-18-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives;DOUGLAS All Model DC-6 Aircraft
Subject:
Engine Operation Placard
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Superseded AD: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Superseded By: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: 50-18-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   50-18-02

SUBJECT HEADING:   Airworthiness Directives;DOUGLAS All Model DC-6 Aircraft

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
50-18-02 DOUGLAS: Applies to All Model DC-6 Aircraft Equipped With Hamilton Standard 43D60/6841A-O, 6851A-O, and 6873A-O Propeller Blades and R-2800-83AM4, R-2800-83A or CA Type Engines.

To have been accomplished by April 28, 1950.

A recent propeller blade tip failure of a Hamilton Standard 43D60/6851A-O propeller on a DC-6 powered with R-2800-CA-15 engines probably resulted from a worn 4 1/2 order engine crankshaft torsional damper P/N 101169. Until further notice or until the engines are known definitely to comply with P&W Service Bulletin No. 1033 dated November 30, 1949, all DC-6 aircraft using Hamilton Standard 6841A-O, 6851A-O and 6873A-O blades and R-2800-83AM4 or CA type engines shall be placarded to avoid all operation between 1,800 and 1,975, between 2,025 and 2,175 and between 2,225 and 2,450 r.p.m. Only acceleration and deceleration through placarded ranges shall be permitted. For gross weights above 80,000 pounds, 2,450 r.p.m. is permissible for normal climb. For gross weights below 80,000 pounds, climbing r.p.m. between 2,450 and 2,600 permissible. For gross weights above 80,000 pounds avoid operation above 2,450 r.p.m. except for takeoff and emergencies. For R-2800-83A engine installations, operating restriction presently covered in Aircraft Specification A781, Note 5C (1) applicable and until further notice operation between 1,800 and 1,975 and between 2,025 and 2,175 shall be prohibited.



FOOTER: