AD 47-10-36

AD Final Rules - DRS_47-10-36.html
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AD Number:
47-10-36
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED Model 49
Subject:
Wing Leading Edge Rework
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Lockheed Aircraft Corporation
Model:
49-46
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Superseded AD: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Superseded By: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: 47-10-36
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   47-10-36

SUBJECT HEADING:   LOCKHEED Model 49

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
47-10-36 LOCKHEED: (Was Service Note 7 of AD-763-3.) Applies to All Model 49 Serial Numbers Up to and Including 2088.

Between the edges of the inboard and outboard nacelle attach angles, the rivets used to attach the leading edge lower skin to the front beam should be inspected for looseness at periods not to exceed 200 hours of operation. When loose rivets are found the following corrective action should be taken:

Add stiffener to lower surface of leading edge skin between Stations 287 and 299, install 5/32-inch rivets in place of existing 1/8-inch rivets used to attach lower leading edge skin to front beam between Station 287 and outboard nacelle, and install six 10-32 screws in place of six rivets in this same rivet line (two each at Stations 263, 287, and 312). After this rework has been accomplished, no further periodic inspections will be required.

(LAC Service Instruction 49/SI-121 covers this wing leading edge reinforcement and rivet replacement.)

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