AD 93-05-18

AD Final Rules - DRS_93-05-18.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
93-05-18
Document Type:
AD Final Rules
Docket Number:
92-NM-180-AD
Subject Heading:
Airworthiness Directives; FOKKER Model F28 Mark 0100 Airplanes
Subject:
Horizontal Stabilizer Dual Actuator Servo Valve Manifold
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
05/14/1993
Make:
Model:
F.28 Mark 0100
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Superseded AD: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Superseded By: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: 93-05-18
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   92-NM-180-AD

AMENDMENT:   39-8522

AD NUMBER:   93-05-18

SUBJECT HEADING:   Airworthiness Directives; FOKKER Model F28 Mark 0100 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective May 14, 1993.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
93-05-18 FOKKER: Amendment 39-8522. Docket 92-NM-180-AD.
Applicability: Model F28 Mark 0100 airplanes, serial numbers 11244 through 11356, inclusive; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent jamming of the servo and to ensure that the stabilizer can be repositioned after an uncommanded trim movement, accomplish the following:

(a) Within 400 hours time-in-service after the effective date of this AD, unless accomplished previously within the last 1,600 hours time-in-service, inspect the end-cap of the horizontal stabilizer dual actuator servo valve manifold to detect moisture in accordance with Fokker Service Bulletin SBF100-27- 029, dated January 29, 1991. Prior to further flight, remove any moisture found in accordance with the service bulletin.

(b) Within 2,000 hours time-in-service or one year after the effective date of this AD, whichever occurs first, modify the end-cap of the servo valve of the horizontal stabilizer hydraulic actuator in accordance with Fokker Service Bulletin SBF100-27-032, dated September 20, 1991, as revised by Fokker Service Bulletin Change Notification SBF100-27-032/01, dated October 19, 1992.

(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, ANM-113.

NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113.

(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 shall be done in accordance with Fokker Service Bulletin SBF100-27-029, dated January 29, 1991. The modification shall be done in accordance with Fokker Service Bulletin SBF100-27-032, dated September 20, 1991; and Fokker Service Bulletin Change Notification SBF100-27- 032/01, dated October 19, 1991 (for Fokker Service Bulletin SBF100-27-032, dated September 20, 1991). 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 Fokker Aircraft USA, Inc., 1199 North Fairfax Street, Alexandria, Virginia 22314. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

(f) This amendment becomes effective on May 14, 1993.

FOOTER: