User's Guide

DRAFT
Page 5-1
17 Mar 2016
23-15-87
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
© Honeywell International Inc. Do not copy without express permission of Honeywell.
MAINTENANCE AND REPAIR
This section provides maintenance and repair information for the A781-500 system, including the following
sections:
• Maintenance
• Repair
• Instructions for Continued Airworthiness
•
Visual Inspection and Check
1. Maintenance
The A781-500 system does not require routine maintenance.
2. Repair
If functional problems occur, the SDU BITE identifies the faulty LRU.
As per continued airworthiness instructions, if an SDU or SCM is inoperative, use the Standard Practices
Chapter of the Aircraft Maintenance Manual to:
• Remove the unit
• Secure cables and wiring
• Collar applicable switches and circuit breakers, and placard them as “inoperative”.
Before flight, revise the equipment list and weight and balance data as applicable, and record the removal
o
f the unit in the log book. Refer to section 9
1.213 of the FAR or the aircraft’s minimum equipment list
(MEL).
All repairs must be performed at the RC equipment supplier factory.
3. Instructions for Continued Airworthiness
Periodic inspections of the mechanical and electrical interfaces of the A781-500 system components to
the aircraft should be completed as defined by the governing airworthiness body’s Instructions for
Continued Airworthiness (ICA) for the installation (for example, Transport Canada, the FAA, the EASA).
Installation of the ARINC 781 SATCOM Avionics System on an aircraft by Supplemental Type Certificate
(STC) obligates the aircraft operator to include the maintenance information supplied by this manual in
the operator’s Aircraft Maintenance manual and the operator’s Aircraft Scheduled Maintenance Program.
This section provides the special instructions and maintenance requirements for continued airworthiness
of the A781-500 system.
A. Airworthiness Limitations
When applicable, the Airworthiness Limitations section is FAA-approved, and specifies
maintenance required
under Title 14 Code of Federal Regulations (CFR) Part 43.16 and 14 CFR
91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved.
This section must be added to the Airplane Maintenance Manuals. The information cont
ained
herein supplements the Airplane Maintenance Manuals only in those areas covered by the
DRAFT as of
4 Mar 2016