AD 93-07-14

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AD Number:
93-07-14
Document Type:
AD Final Rules
Docket Number:
92-NM-171-AD
Subject Heading:
Airworthiness Directives; MCDONNELL DOUGLAS DC-9-33F, -34, -34F, -41, and -51 Series Airplanes, and ...Show more
Subject:
Inspect MLG Wheel Spacer Retainer Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
06/01/1993
Make:
The Boeing Company
Model:
DC-9-32F (C-9A) | DC-9-32F (C-9B) | DC-9-33F | DC-9-34 | DC-9-34F | DC-9-41 | DC-9-51
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Superseded AD: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Superseded By: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:
Updated RGL applicability to match AD applicability; CAR C-11-185
AIRWORTHINESS DIRECTIVES FINAL RULES: 93-07-14
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   92-NM-171-AD

AMENDMENT:   39-8546

AD NUMBER:   93-07-14

SUBJECT HEADING:   Airworthiness Directives; MCDONNELL DOUGLAS DC-9-33F, -34, -34F, -41, and -51 Series Airplanes, and C-9 (Military) Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective June 1, 1993.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   93-07-14 MCDONNELL DOUGLAS: Amendment 39-8546. Docket 92-NM-171-AD.

Applicability: Model DC-9-33F, -34, -34F, -41, and -51 series airplanes, and C-9 (military) airplanes; as listed in McDonnell Douglas DC-9 Service Bulletin 32-228, Revision 1, dated October 6, 1989; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent main landing gear wheel assembly separation during wheel rotation, accomplish the following:

(a) Within 2,000 landings or 18 months after the effective date of this AD, whichever occurs first: Conduct a one-time inspection of the main landing gear (MLG) wheel spacer retainer assemblies for correct hardness of the wheel spacer retainer assemblies and proper installation of the anti-rotation pin, in accordance with McDonnell Douglas DC-9 Service Bulletin 32-228, Revision 1, dated October 6, 1989.

(1) If hardness of the wheel spacer retainer assembly is within limits specified in the service bulletin, and the anti-rotation pin is properly installed, as described in the service bulletin, prior to further flight, permanently mark the wheel spacer retainer assembly with the marking "S/B 32-228."

NOTE: Operators may use any marking procedure that does not create significant stress concentration effects. Acceptable methods include stamping or electro-chemical etch. An appropriate area to mark is the outside diameter of the wheel spacer retainer assembly, at least 2 inches away from the anti-rotation pin.

(2) If hardness of the wheel spacer retainer assembly is not within limits specified in the service bulletin or the anti-rotation pin is not properly installed, as described in the service bulletin, prior to further flight, replace the wheel spacer retainer assembly, in accordance with McDonnell Douglas DC-9 Service Bulletin 32-228, Revision 1, dated October 6, 1989. After accomplishing this replacement, permanently mark the wheel spacer retainer assembly with the marking "S/B 32-228."

(b) As of the effective date of this AD, only wheel spacer retainer assemblies marked "SB 32-228" may be installed on any airplane.

(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, Los Angeles Aircraft Certification Office (ACO), 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, Los Angeles ACO.

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

(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 inspection and replacement shall be done in accordance with McDonnell Douglas DC-9 Service Bulletin 32-228, Revision 1, dated October 6, 1989. 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 McDonnell Douglas Corporation, P.O. Box 1771, Long Beach, California 90846-1771, Attention: Business Unit Manager, Technical Publications, C1-HDR (54-60). Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office (ACO), 3229 East Spring Street, Long Beach, California; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

(f) This amendment becomes effective on June 1, 1993.

FOOTER: