AD 92-13-51

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AD Number:
92-13-51
Document Type:
AD Final Rules
Docket Number:
92-NM-131-AD
Subject Heading:
Airworthiness Directives; CONSTRUCCIONES AERONAUTICAS S.A. (CASA) Model C-212 Series Airplanes
Subject:
Backup Blocking Device
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
07/31/1992
Make:
EADS CASA
Model:
C-212-CB | C-212-CC | C-212-CD | C-212-CE | C-212-CF | C-212-DE | C-212-DF
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Superseded AD: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Superseded By: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: 92-13-51
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   92-NM-131-AD

AMENDMENT:   39-8298

AD NUMBER:   92-13-51

SUBJECT HEADING:   Airworthiness Directives; CONSTRUCCIONES AERONAUTICAS S.A. (CASA) Model C-212 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective July 31, 1992.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
92-13-51 CONSTRUCCIONES AERONAUTICAS S.A. (CASA): Amendment 39-8298. Docket No. 92-NM-131-AD.
Applicability: All Model C-212 series airplanes, certificated in any category.

Compliance: Required as indicated, unless accomplished within the last 300 hours time-in-service before the effective date of this AD.

To ensure proper operation of the backup blocking device, accomplish the following:

(a) Within 48 hours after the effective date of this AD, and thereafter at intervals not to exceed 300 hours time-in-service, accomplish the following:

(1) Jack up the airplane so that both main landing gear shock absorbers are fully extended.

(2) Move both power levers to the flight idle position or above.

(3) Without power applied to the auxiliary battery busbar and/or with circuit breaker KA55 open, lift the flight idle stop gate triggers and move both power levers into the ground idle position or below. It should be possible to freely move the power levers below the flight idle gate in this step of the test.

(4) Move the power levers to the flight idle position or above a second time.

(5) Apply power to the auxiliary battery busbar and ensure that circuit breaker KA55 is closed.

(6) Lift the flight idle stop gate triggers and attempt to move both power levers to ground idle position or below. It should be impossible to move the power levers below the flight idle position. If one or both power lever(s) can be moved below the flight idle position in this step of the test, the backup blocking device is not working properly. Prior to further flight, restore the backup blocking devices to the configuration described in CASA Service Bulletin 212-76-07, dated July 27, 1990; and re-test the system.

(b) Within 10 days after accomplishing the functional tests required by paragraph (a) of this AD, report the results of those tests, positive or negative, to the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington 98055-4056; fax (206) 227-1320. Information collection requirements contained in this regulation have been approved by the Office of Management and Budget (OMB) under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.) and have been assigned OMB Control Number 2120-0056.

(c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch.

NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch.

(d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished.

(e) The restoration of the backup blocking devices to the proper configuration shall be done in accordance with CASA Service Bulletin 212-76-07, dated July 27, 1990. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Construcciones Aeronauticas S.A. (CASA), Getafe, Madrid, Spain. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC.

(f) This amendment becomes effective on July 31, 1992, to all persons except those persons to whom it was made immediately effective by telegraphic AD T92-13-51, issued June 16, 1992, which contained the requirements of this amendment.

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