[Federal Register Volume 64, Number 92 (Thursday, May 13, 1999)]
[Notices]
[Pages 25951-25952]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-12058]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration


Proposed Advisory Circular 20-XX-31, Installation, Inspection, 
and Maintenance of Controls for General Aviation Reciprocating Aircraft 
Engines

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of availability of proposed Advisory Circular (AC) 20-
XX-31, and request for comments.

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SUMMARY: This notice announces the availability of and request for 
comments on proposed AC 20-XX-31, Installation, Inspection, and 
Maintenance of Controls for General Aviation Reciprocating Aircraft 
Engines.This AC presents information regarding the inspection, 
maintenance, and installation of engine controls with emphasis on the 
airframe portion of these systems. It provides guidance to design and 
maintenance personnel to reduce the number of airplane accidents and 
incidents related to the loss of engine power control. This AC provides 
a supplement, but does not replace the procedures in the manufacturers' 
maintenance manuals. This material is neither mandatory nor regulatory 
in nature and does not constitute regulation.


[[Page 25952]]


DATES: Comments must be received on or before July 12, 1999.

ADDRESSES: Send all comments on the proposed AC to Federal Aviation 
Administration, Small Airplane Directorate, Regulations and Policy 
Branch (ACE-111), 601 East 12th Street, Kansas City, MO 64106. You may 
also submit comments on the internet to: [email protected].

FOR FURTHER INFORMATION CONTACT: Christina Marsh, Standards Office 
(ACE-110), Small Airplane Directorate, Aircraft Certification Service, 
Federal Aviation Administration; telephone (781) 238-7164.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    Any person may obtain a copy of this proposed AC by either 
contacting the person named above under the FOR FURTHER INFORMATION 
CONTACT section or on the internet at: http://www.faa.gov/avr/air/
airhome.htm. We invite interested parties to submit your comments by 
electronic mail to the ADDRESSES section specified above. Commenters 
must identify the AC title and number when submitting any comments. The 
FAA will consider all communication received on or before the closing 
date for comments before issuing the final AC. The proposed AC and 
comments received may be inspected at the Standards Office (ACE-110), 
Suite 900, 1201 Walnut, Kansas City, Missouri, between the hours of 
7:30 a.m. and 4:00 p.m. weekdays, except Federal holidays.

Background

    A review of service history on engine control installations 
indicates that 75 percent of the problems with these systems result 
from lack of proper maintenance of airplane manufacturer installed 
engine controls. The other 25 percent of the service problems originate 
from a lack of maintenance of the engine manufacturers' throttle, 
mixture, and propeller governor levers/linkages. Most airplane or 
engine maintenance manuals lack detailed information on inspection and 
installation of engine controls.

    Issued in Kansas City, Missouri, on May 4, 1999.
Michael Gallagher,
Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. 99-12058 Filed 5-12-99; 8:45 am]
BILLING CODE 4910-13-M