AD 75-18-02

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AD Number:
75-18-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Caproni Vizzola Costruzioni Aeronautiche S.p.A Caproni Calif A-21 Series Glider
Subject:
Aileron Flutter
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
09/30/1976
Make:
Agusta S.p.A.
Model:
Calif A21 | Calif A21S
Product Type:
Aircraft
Product Subtype:
Glider
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 75-18-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2726

AD NUMBER:   75-18-02

SUBJECT HEADING:   Airworthiness Directives; Caproni Vizzola Costruzioni Aeronautiche S.p.A Caproni Calif A-21 Series Glider

ACTION:  

SUMMARY:  

DATES:   Effective September 30, 1976.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
75-18-02 CAPRONI VIZZOLA COSTRUZIONI AERONAUTICHE S.p.A.: Amendment 39-2340 as amended by Amendment 39-2430 is further amended by Amendment 39-2726. Applies to Caproni Calif A-21 series glider, serial numbers 201, 202, and 204 and subsequent, certificated in all categories.

Compliance is required as indicated.

To prevent aileron flutter, accomplish the following:

(a) Within the next 10 hours time in service after the effective date of this AD, unless already accomplished:

(1) Install an operating limitations placard near the airspeed indicator reading - "DO NOT EXCEED 124 MPH - 108 KNOTS".

(2) Inspect the aileron control driving cones for cleanliness.

NOTE: To gain access to the driving cones, located in the fuselage under the central segment of the wing, disassemble the wing from the fuselage. Avoid entry of solid foreign material and dirt particles in driving cones upon reassembly.

(3) Inspect the aileron system for free play by holding the trailing edge of one aileron at the wing tip end and measuring the distance through which the trailing edge of the other aileron at wing tip end travels from upward to downward position when moved by hand without causing elastic deflection of the aileron. If the free play exceeds 3 MM (0.118 inch), rerig the aileron system.

(b) Inspect the aileron system for cleanliness and free play, and rerig as necessary, in accordance with paragraphs (a)(2) and (a)(3) of this AD, at intervals not to exceed 50 hours time in service from the last inspection.
(CAPRONI VIZZOLA COSTRUZIONI AERONAUTICHE S.p.A. Mandatory Technical Service Bulletin T.B. No. 75.05 R.A.I. dated July 29, 1975, refers in part to this subject.)

(c) The placard required by paragraph (a) of this AD may be removed and the inspections required by paragraph (b) of this AD may be discontinued upon the incorporation of the following applicable modification:

(1) For gliders with serial numbers 201, 202, 204 through 208, 210, and 212 through 214, replace the fiberglass ailerons with metal ailerons, P/N A24A2, in accordance with paragraph (a) of the Instruction section of Caproni Vizzola Costruzioni Aeronautiche Technical Bulletin No. 76.08, undated, or an FAA-approved equivalent.

(2) For gliders with serial numbers 211 and 215 through 218, replace the metal ailerons with modified metal ailerons, P/N A24Al, in accordance with paragraph (b) of the Instruction section of Caproni Vizzola Costruzioni Aeronautiche Technical Bulletin No. 76.08, undated, or an FAA-approved equivalent.

(3) For glider serial number 209, replace the metal ailerons with modified metal ailerons, P/N A24B1, in accordance with paragraph (c) of the Instruction section of Caproni Vizzola Costruzioni Aeronautiche Technical Bulletin 76.08, undated, or an FAA-approved equivalent.

(4) For gliders with serial numbers 219 through 228, replace the existing metal ailerons with modified metal ailerons, P/N A24B1, in accordance with the Instruction section of Caproni Vizzola Costruzioni Aeronautiche Technical Service Bulletin 76.07. undated, or an FAA-approved equivalent.

Amendment 39-2340 became effective August 22, 1975.
Amendment 39-2430 became effective November 28, 1975.
This amendment, 39-2726, becomes effective September 30, 1976.

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