AD 93-11-08

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AD Number:
93-11-08
Document Type:
AD Final Rules
Docket Number:
92-NM-69-AD
Subject Heading:
Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes
Subject:
Actuator Attachment Brackets Inspection
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
07/22/1993
Make:
Viking Air Limited
Model:
DHC-7-1 | DHC-7-100 | DHC-7-101 | DHC-7-102 | DHC-7-103
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Superseded AD: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Superseded By: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: 93-11-08
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   92-NM-69-AD

AMENDMENT:   39-8598

AD NUMBER:   93-11-08

SUBJECT HEADING:   Airworthiness Directives; De Havilland Model DHC-7 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective July 22, 1993.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
93-11-08 DE HAVILLAND, INC.: Amendment 39-8598. Docket 92-NM-69-AD.

Applicability: Model DHC-7 series airplanes; serial numbers 1 through 30, inclusive; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent structural failure, accomplish the following:

(a) Within 6 months after the effective date of this AD, perform a one-time inspection of the lower two securing rivets on the left- and right-hand ground spoiler actuator attachment brackets to ensure the integrity of these rivets and to detect signs of fuel leakage, in accordance with de Havilland Service Bulletin 7-57-12, dated January 15, 1982.

(1) If any loose or damaged rivet is found, or if there is evidence of fuel leakage, prior to further flight, modify the ground spoiler actuator attachment brackets (Modification No. 7/1827), in accordance with the service bulletin.

(2) If no loose or damaged rivet and no evidence of fuel leakage is found, within 6 months after accomplishing the inspection required by paragraph (a) of this AD, modify the ground spoiler actuator attachment brackets (Modification No. 7/1827), in accordance with the service bulletin.

(b) 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, New York Aircraft Certification Office (ACO), ANE-170, FAA, Engine and Propeller Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, New York ACO.

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

(c) 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.

(d) The inspection and modification shall be done in accordance with de Havilland Service Bulletin 7-57-12, dated January 15, 1982. 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 de Havilland, Inc., Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Engine and Propeller Directorate, New York Aircraft Certification Office, 181 South Franklin Avenue, Room 202, Valley Stream, New York; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

(e) This amendment becomes effective on July 22, 1993.

FOOTER: