RECOMMENDED
OPERATION PRACTICES
No: Ho-P6091-ROP-0000
Rev: 04A
Date: Mar 11/2020
Page: 5 of 17
N40 HANDSET with SUPPORT BRACKET
This document is the property of Holmberg GmbH & Co.KG.
It shall not be partially or totally reproduced, lent to a third party or used against the aforementioned Company.
A. INTRODUCTION
1. GENERAL
A. Cockpit and cabin crews are requested to read this manual carefully to be able to use
N40 handsets with support brackets in an adequate and proper way to avoid any
unexpected damages.
B. This document describes operational and recommended handling practices for the
component in service. It does not describe maintenance of components. For
maintenance procedures, please refer to applicable CMM under ASSOCIATED
PUBLICATION.
C. This document contains:
-Information about operation of the component
-Recommended handling practices
-Equipment cleaning procedure
2. REVISION SERVICE
This manual will be revised by revision if necessary.
3. APPLICABILITY
This ROP is applicable to all variances of N40 handset with support bracket as follow.
Handset with Support Bracket
(Analogue Series: N40A)
N40-1Aw0xyy-10x
N40-1Bw0xyy-10x
A: First Version (superseded by B!)
B: GSM-hardened Version
w: Color code
x: Electrical and Mechanical Interface (Analogue)
(x= 1: Spring retained x= 2: Release Mechanism)
yy: Keyboard Type
Handset with Support Bracket
(Digital Series: N40D)
N40-1Aw0x0y-z0x
N40-2Aw0x0y-z0x
A: First version
w: Color code
x: Electrical and Mechanical Interface (Digital)
(x= 3: Spring retained x= 4: Release Mechanism)
y: Keyboard Type
(y = 1: Flight Deck, y = 2: Cabin)
z: Coiled Cord Type (Length)
(z = 1: Standard, z = 2: Elongated)
4. HOW TO USE THIS MANUAL
A. All instructions in this manual should be used only for cockpit /cabin handset with support
bracket as mentioned in chapter under APPLICABILITY.
5. ASSOCIATED PUBLICATION
CMM 44-10-02 - N40 digital series handset with support bracket
CMM 44-10-03 - N40 analogue series handset with support bracket
