Aircraft Wheels & Brakes
Goodrich Corporation
PO Box 340 Troy, Ohio 45373
Tel: (937) 339-3811 FAX: (937) 440-2055
These commodities, software, or technology are controlled by the Export Administration Regulations (EAR). They
are subject to the export control laws of the U.S. Government. They are not to be placed in the public domain,
exported from the U.S., or given to any foreign person in the U.S., without prior, specific written authorization of
Goodrich Corporation and the U.S. Department of Commerce.
SUBJECT: LANDING GEAR - WHEELS AND BRAKES
WARNINGS ON INSTALLATION OF PARTS THAT ARE NOT APPROVED BY
GOODRICH
USED ON: Aircraft that use Goodrich wheels and brakes
REFERENCE: Goodrich Component Maintenance Manuals (CMM’s)
PURPOSE: This Service Letter gives warnings to not use parts that are not approved by
Goodrich for installation in specified assemblies.
DISCUSSION: The Federal Aviation Administration (FAA) has approved replacement parts that
are different from specified parts in applicable Goodrich publications. Goodrich
has not done tests on these FAA-approved parts and does not give approval for
the installation of these parts.
Goodrich uses proprietary design procedures and rigorous tests to show that
Goodrich assemblies give specified performance or better-than-specified
performance. Tests were done with Goodrich-approved parts in each assembly
to show that related subsystems correctly work together as a system for
qualification and certification. Some examples of related subsystems include:
landing gear, brake control (anti-skid), wheels, brakes, and tires.
Goodrich makes wheel assemblies and brake assemblies to aircraft
manufacturer specifications, to FAA requirements, and to all other applicable
regulations. Goodrich design procedures also use data on wear distribution,
thermal balance, dynamic stability, reliability, endurance, torque sensitivity, and
environmental exposure. The environmental exposure includes: humidity, icing,
salt fog, shock, and vibration. Installation of parts that do not have equivalent
design procedures or test results can decrease the performance of wheel
assemblies, brake assemblies, or related subsystems.
FAA approval of replacement parts in Goodrich assemblies usually is given
after tests that are less extensive than performance tests by the aircraft
manufacturer and by Goodrich. The Aircraft Flight Manual, Component
Maintenance Manuals, and warranties are based on performance tests by the
aircraft manufacturer and by Goodrich. The operation of each subsystem
depends on all related subsystems to give safe and reliable take-offs and
landings. When equivalent tests with FAA-approved parts are not done,
Goodrich cannot make sure that the assemblies give safe and reliable
performance. Goodrich has policies that follow:
Issued: Dec 18/01 SL1914 Page 1 of 2
Revision No. 1: Feb 3/06
Aircraft Wheels & Brakes
Goodrich Corporation
PO Box 340 Troy, Ohio 45373
Tel: (937) 339-3811 FAX: (937) 440-2055
WARNING: THE USE OF REPLACEMENT PARTS THAT ARE NOT APPROVED BY
GOODRICH FOR INSTALLATION IN A SPECIFIED ASSEMBLY WILL
AUTOMATICALLY VOID ALL WARRANTIES EXTENDED BY GOODRICH.
WARNING: REGARDLESS OF ANY FAA APPROVALS OR DEMONSTRATED
COMPLIANCE WITH AIRFRAME MANUFACTURER'S ORIGINAL
EQUIPMENT REQUIREMENTS, GOODRICH DOES NOT WARRANT OR
ASSUME THE RISK OF THE INSTALLATION OF REPLACEMENT PARTS
THAT ARE NOT APPROVED BY GOODRICH FOR INSTALLATION IN A
SPECIFIED ASSEMBLY. OPERATORS WHO USE REPLACEMENT
PARTS THAT ARE NOT APPROVED BY GOODRICH DO SO AT THEIR
OWN RISK AND TAKE FULL RESPONSIBILITY FOR ALL PROPERTY
DAMAGE, PERSONAL INJURY, OR DEATH CAUSED BY SUCH
REPLACEMENTS PARTS. USE ONLY GOODRICH-APPROVED
REPLACEMENT PARTS THAT ARE GIVEN IN THE ILLUSTRATED
PARTS LIST OF THE COMPONENT MAINTENANCE MANUAL OR IN
SERVICE BULLETINS OR SERVICE LETTERS THAT ARE ISSUED BY
GOODRICH.
WARNING: GOODRICH ASSUMES NO LIABILITY WHATSOEVER, WHETHER
CONTRACTUAL, WARRANTY, TORT OR OTHERWISE, FOR ANY
FEDERAL AVIATION ADMINISTRATION SANCTIONS, PRODUCT
MALFUNCTIONS, PROPERTY DAMAGE, PERSONAL INJURIES, OR
SIMILAR INCIDENTS THAT OCCUR AFTER SUBSTITUTION OF PARTS
THAT ARE NOT APPROVED BY GOODRICH, OR SUBSTITUTION OF
PARTS WITH ALTERATIONS THAT ARE NOT APPROVED BY
GOODRICH MANUALS OR OTHER WRITTEN PROCEDURES THAT ARE
ISSUED BY GOODRICH.
This document is subject to the controls and restrictions on the first page.
Issued: Dec 18/01 SL1914 Page 2 of 2
Revision No. 1: Feb 3/06
