AD 47-42-19

AD Final Rules - DRS_47-42-19.html
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AD Number:
47-42-19
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; DOUGLAS DC-6 Aircraft
Subject:
Horizontal Stabilizer Front Spar Cap
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Superseded AD: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Superseded By: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: 47-42-19
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   47-42-19

SUBJECT HEADING:   Airworthiness Directives; DOUGLAS DC-6 Aircraft

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
47-42-19 DOUGLAS: (Was Service Note 5 of AD-781-1.) Applies to the Following DC-6 Aircraft: Serial Numbers 42854 to 42894, Inclusive; 43000 to 43012, Inclusive; 43055, 43056, and 43062.

Inspection required at every engine change.

After the stop holes are drilled in the tail stub extension of the horizontal stabilizer front spar caps, as required by AD 47-42-11, inspect for signs of cracks, or progress of cracks, at each engine change period. If the aircraft has been modified to incorporate the elevator fifth hinge modification, the inspection period may be extended to every other engine change period, but not to exceed 3,000 hours of airplane operation. If cracks progress beyond the stop hole, operation of the airplane must be discontinued until additional corrective measures have been determined.


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