AD 74-19-07

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AD Number:
74-19-07
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 747 Series Aircraft
Subject:
Flap Control Handle Detent Pin
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
09/20/1974
Make:
The Boeing Company
Model:
747-100 Series | 747-100B Series | 747-100B SUD Series | 747-200B Series | 747-200C Series | 747-200...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Superseded AD: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Superseded By: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: 74-19-07
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1961

AD NUMBER:   74-19-07

SUBJECT HEADING:   BOEING Model 747 Series Aircraft

ACTION:  

SUMMARY:  

DATES:   Effective September 20, 1974.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
74-19-07 BOEING: Amendment 39-1961. Applies to Boeing Model 747 Series aircraft certificated in all categories with more than 2,000 flights. Compliance required as noted:

(A) Within the next 100 flights, determine the thickness of the flap control handle detent pin in accordance with FAA approved Boeing Service Bulletin 747-27-2121, Revision 1, dated June 14, 1974, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. Flap control handle detent pins with more than .110 inch thickness remaining are to be inspected at intervals not to exceed 2,000 flights. Pins with .110 or less but more than .070 inch thickness are to be inspected at intervals not to exceed 750 flights. Pins with .070 or less but more than .050 inch thickness remaining are to be inspected at intervals not to exceed 250 flights. Pins with .050 or less but more than .045 inch thickness must be replaced within 100 flights. Pins with .045 inch or less thickness remaining are to be replaced with an approved flap control handle prior to further flight.
(B) On or before September 1, 1975, relocate the bias spring in accordance with FAA approved Boeing Service Bulletin 747-27-2121, Revision 1, dated June 14, 1974, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA, Northwest Region.
(C) Rework of the flap control handle detent pin, refinish of the detent plate and relocation of the bias spring, in accordance with Boeing Service Bulletin 747-27-2121, Revision 1, dated June 14, 1974, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA, Northwest Region, constitutes terminating action under the provisions of this AD.
(D) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA, Northwest Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator, if the request contains substantiating data to justify the adjustment period.

This amendment becomes effective 30 days after September 20, 1974.

FOOTER: