AD 77-14-01

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AD Number:
77-14-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Agusta Model A-109A Helicopters
Subject:
Main Rotor Flaps
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
07/15/1977
Make:
Agusta S.p.A.
Model:
A109A
Product Type:
Aircraft
Product Subtype:
Rotorcraft
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 77-14-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2949

AD NUMBER:   77-14-01

SUBJECT HEADING:   Airworthiness Directives; Agusta Model A-109A Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective July 15, 1977.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
77-14-01 AGUSTA: Amendment 39-2949. Applies to Model A-109A helicopters equipped with main rotor hub flap hinge bearings P/N SJ7355/IR7355.

Compliance is required as indicated, unless already accomplished.

To prevent possible improper operation of the main rotor flaps due to premature failure of any one of the main rotor hub flap hinge bearings, accomplish the following:

(a) For helicopters with serial numbers up to and including S/N 7120, except S/N 7119 -

(1) Within the next 10 hours time in service after the effective date of this AD, replace the main rotor hub flap hinge bearings P/N SJ7355/IR7355 in accordance with Part I of Agusta Technical Bulletin No. 109-3, dated May 4, 1977, or an FAA-approved equivalent; and

(2) Within 100 hours time in service after complying with paragraph (a)(1) of this AD, and thereafter at intervals not to exceed 100 hours time in service, or any time abnormal oil leaks occur from flap hinges, perform inspections and replace bearings, as necessary, in accordance with Part II of Agusta Technical Bulletin No. 109-3, dated May 4, 1977, or an FAA-approved equivalent.

(b) For helicopters with serial numbers S/N 7119, S/N 7121 and up, within the next 25 hours time in service after the effective date of this AD, except for those which have been inspected within the previous 75 hours, and thereafter at intervals not to exceed 100 hours time in service or any time abnormal oil leaks occur from flap hinges, perform inspections and replace bearings, as necessary, in accordance with Part II of Agusta Technical Bulletin No. 109-3, dated May 4, 1977, or an FAA-approved equivalent.

(c) Equivalent methods of complying with this AD must be approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa and Middle East Region, c/o American Embassy, APO New York, N.Y. 09667.

This amendment becomes effective July 15, 1977.

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