AD 93-07-07

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AD Number:
93-07-07
Document Type:
AD Final Rules
Docket Number:
92-NM-178-AD
Subject Heading:
Airworthiness Directives; FOKKER Model F28 Mark 0100 Series Airplanes
Subject:
Inspect APU Fuel Supply Tube Assy
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
06/01/1993
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Superseded AD: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Superseded By: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: 93-07-07
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   92-NM-178-AD

AMENDMENT:   39-8539

AD NUMBER:   93-07-07

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

ACTION:  

SUMMARY:  

DATES:   Effective June 1, 1993.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
93-07-07 FOKKER: Amendment 39-8539. Docket 92-NM-178-AD.
Applicability: Model F28 Mark 0100 series airplanes; serial numbers 11244 through 11339, inclusive, and 11341 through 11351, inclusive; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent fuel leakage in the rear fuselage, accomplish the following:

(a) Within 6 months after the effective date of this AD, conduct an inspection of the auxiliary power unit (APU) fuel supply tube assembly to determine minimum clearance between the tube assembly and the aircraft structure, in accordance with Fokker Service Bulletin SBF100-28-022, dated December 13, 1991.

(1) If the APU fuel supply tube assembly is chafed or if it touches the aircraft structure, prior to further flight, replace the APU fuel supply tube assembly with a new assembly, in accordance with the service bulletin.

(2) If the clearance is less than 3 mm at any point, but the APU fuel supply tube assembly is not chafed and does not touch the aircraft structure: Within 3 months after accomplishing the inspection, replace the APU fuel supply tube assembly with a new assembly, in accordance with the service bulletin.

(3) If the clearance is 3 mm or more at all points, no further action is necessary.

(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, 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.

(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 replacement shall be done in accordance with Fokker Service Bulletin SBF100-28-022, dated December 13, 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.

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

FOOTER: