AD 74-08-11

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AD Number:
74-08-11
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; de Havilland Model DHC-6 Series Airplanes
Subject:
Side Seat Rail Attachment
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
04/18/1974
Make:
Viking Air Limited
Model:
DHC-6-1 | DHC-6-100 | DHC-6-200 | DHC-6-300
Product Type:
Aircraft
Product Subtype:
Small 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Superseded AD: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Superseded By: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: 74-08-11
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1819

AD NUMBER:   74-08-11

SUBJECT HEADING:   Airworthiness Directives; de Havilland Model DHC-6 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective April 18, 1974.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
74-08-11 DEHAVILLAND: Amendment 39-1819. Applies to DHC-6 airplanes Serial Numbers 136 to 350 inclusive, 353, 356, 360 to 366 inclusive, and 368 certificated in all categories.

To prevent rivet failures in the side seat rail attachment structure of inward facing seats which are forward of the right-hand cabin door between Fuselage Stations 239.0 and 290.3, accomplish the following in accordance with de Havilland Service Bulletin No. 6/302, dated November 8, 1973:

1. For airplanes that presently have inward facing seats installed, within the next 200 hours in service after the effective date of this AD, unless already accomplished, inspect in accordance with the Accomplishment Instructions of the Service Bulletin, and alter, as necessary, in accordance with the Service Bulletin or in accordance with an approved equivalent alteration.

2. For future initial installation of inward facing seats, attachments must be in accordance with Details "A", "B", "C", and "D" of the Service Bulletin, or approved equivalent attachments.

3. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 522(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to de Havilland Aircraft of Canada, Ltd., Attention: Product Support Department, Downsview, Ontario, Canada. These documents may also be examined at the Eastern Region, Engineering and Manufacturing Branch, Federal Building, J.F.K. International Airport, Jamaica, N.Y. 11430, and at the FAA headquarters, 800 Independence Avenue, S.W., Washington, D.C. A historical file on this AD which includes the incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and at the Eastern Region.

4. Equivalent alterations and attachments must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

5. The compliance time may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, upon receipt of substantiating data submitted through a local FAA maintenance inspector.

This amendment is effective April 18, 1974.

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