AD 92-17-14

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AD Number:
92-17-14
Document Type:
AD Final Rules
Docket Number:
91-ANE-24
Subject Heading:
PRATT & WHITNEY CANADA Models PW123, PW124B, PW125B, and PW126A Engines
Subject:
Fuel Pump
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/18/1992
Make:
Pratt & Whitney Canada Corp.
Model:
PW123 | PW124B | PW125B | PW126A
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 92-17-14
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   91-ANE-24

AMENDMENT:   39-8343

AD NUMBER:   92-17-14

SUBJECT HEADING:   PRATT & WHITNEY CANADA Models PW123, PW124B, PW125B, and PW126A Engines

ACTION:  

SUMMARY:  

DATES:   Effective November 18, 1992.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   92-17-14 PRATT & WHITNEY CANADA: Amendment 39-8343. Docket No. 91-ANE-24.
Applicability: Pratt & Whitney Canada (PWC) PW123, PW124B, PW125B, and PW126A turboprop engines installed on, but not limited to, DeHavilland of Canada DHC-8 Series 300, Canadair CL-215T, Aerospatiale ATR-42 and ATR-72, Fokker 50, and British Aerospace ATP aircraft.
Compliance: Required at the next shop visit, or within 12 months from the effective date of this AD, whichever occurs first, unless accomplished previously.
To prevent large engine torque variations and a subsequent aircraft asymmetric thrust condition, accomplish the following:
(a) Install a new or reworked fuel pump in accordance with the Accomplishment Instructions of PWC Service Bulletin 20946R2, Revision 2, dated May 13, 1991, on those engines identified by serial number in the Effectivity paragraph of the incorporated service bulletin.
(b) For the purpose of this AD, a shop visit is defined as the induction of an engine into a maintenance facility for the conduct of maintenance.
(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, Engine Certification Office, FAA, Engine and Propeller Directorate. The request should be forwarded through an FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Engine Certification Office.
NOTE: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the Engine Certification Office.
(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 installation procedure shall be done in accordance with the following Pratt & Whitney Canada manufacturer's service bulletin:

DOCUMENT NO.	PAGES	ISSUE/REVISION	DATE
PWC SB20946R2	1-11	Revision 2	May 13, 1991
Total Pages: 11			

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 Pratt & Whitney Canada, Technical Publications Department, 1000 Marie Victorin, Longueuil, Quebec J4G 1A1. Copies may be inspected at the FAA, New England Region, Office of the Assistant Chief Counsel, 12 New England Executive Park, Burlington, Massachusetts, or at the Office of the Federal Register, 800 North Capitol Street, NW., Suite 700, Washington, DC 20001.
(f) This amendment becomes effective on November 18, 1992.

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