AD 51-02-01

AD Final Rules - DRS_51-02-01.html
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AD Number:
51-02-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; DOUGLAS All Model DC3 Series Aircraft
Subject:
Ramp Type Door Rework
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
The Boeing Company
Model:
DC3-G102 | DC3-G102A | DC3-G103A | DC3-G202A | DC3A-S1C3G | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3...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Superseded AD: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Superseded By: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: 51-02-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   51-02-01

SUBJECT HEADING:   Airworthiness Directives; DOUGLAS All Model DC3 Series Aircraft

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
51-02-01 DOUGLAS: Applies to All Model DC3 Series Aircraft With Ramp Type Main Entrance Doors Hinged at the Bottom.

Compliance required as indicated below.

(1) At next No. 1 inspection or equivalent and at regular intervals not to exceed approximately 100 hours, inspect the main entrance door hinges and locking and warning mechanisms for alignment and/or adjustment until the rework of item (2) is accomplished.

(2) Compliance required by July 1, 1951.

A. Install an inspection window for at least the uppermost main entrance door locking bayonet. The installation to be in a manner to permit visual observation of the bayonets in the locked position so that it can be determined by visual means that the door is properly closed and locked. The bayonets and adjacent structure should also be appropriately marked with a paint stripe to indicate when the bayonets are in the locked position.

B. Provide means to prevent disengagement of bayonets by creeping due to vibration or other loads in flight. A notched bayonet installation similar to that covered in Metropolitan Airparts Service Bulletin No. MAP-1A for their airstairs Model A; or similar to the notched bayonet installation used on the Douglas DC-6 and Super DC3 main entrance doors; or a spring loaded positive over center latching mechanism will be considered to meet this objective.

(3) Compliance required by January 1, 1953.

To reduce the possibility of inadvertent opening of the door in flight install stops to positively limit the lock mechanism travel in accordance with Metropolitan Airparts Service Bulletins No. MAP-4A, MAP-5A, or MAP-6A (for Model A, C, or D Airstair Doors, respectively) or equivalent.


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