Eagle P139-HD, Installation Manual

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ECO-1519 GA182.doc Page 1 of 2
ENGINEERING CHANGE ORDER
Date:
5/08/2014
ECO No:
ECO- 1519
Rev:
--
STC: SR00521SE MDL:
GA182
Rev:
M
STC Title : Audio System
Effective for:

Production; or

Listed Aircraft Only:
Primary Document Effected: See list below
Description of Change: Adds audio system configurations STC
Detailed Explanation:
This ECO defines three audio system configurations as follows:

P139-
HD (D) Uses Router G13000 in a “Dual-board” configuration. This is the standard audio
system that was previously specified in the STC and is shown in the diagrams. The G13000
is the primary router used throughout the instructions.

P139-HD (S) has been added as an optional system configuration. It uses Router G13000 in
a “Single-board” configuration that uses the same case as the dual-board router, but with only
one audio board installed. These two routers share the same installation and wiring drawings.

P139-HD (T) has been added as an optional system configuration. It uses Router G13160
and is a “Three board” router. This installation replaces wiring drawing G13004 with drawing
G13162. Installation of this router is performed the same as the others two routers with slight
changes in the mounting hardware as noted in the instructions. The G13160 router supports
more radios, control panels and headsets than what the G13000 provides.
This change is considered a minor change since the primary functionality of the system has not
changed; there is negligible change to weight, balance and power consumption; and there are no
changes required for the RFMS.
To support this change:
GA182-7 , GA182-8 & GA182-11 have been revised to: add Section 1.3 defining the configurations;
Revised the wording throughout the manual to define the installation differences between the different
configurations. Updated the control panels section to show just the current panels offered. Figures
throughout the manual have been updated for continuity.
G13004 has been updated to change the headset numbering scheme and to add external power for
additional control panels.
G13160 Router drawing has been added for the three board router.
G13161 Tray has been added to be used in place of Tray G13009 for the G13160 Router.
G13161-1, -2, -3, -4 &-5 detail drawings have been added.