ElectroAir EIS Back-Up Battery System Instructions

: June 9, 2024
: electroair

Table of Contents

ElectroAir EIS Back-Up Battery System
Log Of Revisions
General
- FUNCTIONAL OVERVIEW
- SYSTEM OPERATION
Limitations
Emergency Procedures
Normal Procedures
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ElectroAir EIS Back-Up Battery System

FAA-APPROVED
AIRPLANE FLIGHT MANUAL SUPPLEMENT For EIS Back-up Battery System (EBBS) Panel With Existing Dual EIS and Back-up Battery Pack

Registration No. ___
Serial No. ___

This supplement must be attached to the FAA-approved Airplane Flight Manual when the EIS Back-up Battery System Panel has been installed per FAA STC SA04586CH.

The information contained herein supplements or supersedes the basic Airplane Flight Manual only in those areas listed. For limitations, procedures, and performance information not contained in this supplement, consult the basic Airplane Flight Manual.

FAA APPROVED:

DATE: DEC 21 2022

This document has been designated as Electroair Restricted Proprietary Information. The information contained therein is reserved for the exclusive use of Electroair. Release only on a need-to-know basis.

Log Of Revisions

Revision	Pages Affected	Description of Revision	FAA Approved	Date

__

00

| __

1-10

| __

Initial Release

| SHAY A Digitally signed by

SHAY A PONTSLER

PONTSLER Date: 2022.12.21

16:01:35 -05’00’

for Mgr, AIR-713

| __

12/21/2022

General

This Airplane Flight Manual Supplement contains the necessary information required for the operation of the Electroair Electronic Ignition System (EIS) Back-up Battery System (EBBS) Panel, Part # EA-26000-12, and EA-26000-24.

The EBBS Panel, presented in Figure 1, is designed for use with dual EIS, STC# SA02987CH or SA03286CH, and TCW Technologies Integrated Back-up Battery System (IBBS), STC# SA04400NY. Each of these STCs incorporates a separate AFMS for the prerequisite systems. Specifically, 4-cylinder EIS (SA02897CH) document number AFMS EIS-41000, 6-cylinder EIS (SA03286CH) document number AFMS EIS-61000, and TCW Integrated Back-up Battery System (SA04400NY) document number 725.0005.

FUNCTIONAL OVERVIEW

The EBBS panel has three Light Emitting Diodes (LEDs), a voltmeter, and a rocker switch. The illumination of the EIS #1 or #2 LEDs (green) indicates the respective EIS is receiving power. Illumination of the BATTERY IN USE (amber) LED indicates the backup battery is supplying power to the connected EIS. The voltmeter indicates the voltage of the backup battery system. The rocker switch enables the backup battery to activate when the aircraft’s primary electrical system drops below the acceptable range. See Table 1 for the label description.

Label Description

LABEL	LED	DESCRIPTION
EIS #1	Green	EIS #1 has a sufficient voltage for operation
EIS #2	Green	EIS #2 has a sufficient voltage for the operation
BATTERY IN USE	Amber	EIS is powered by backup battery system due to the main

aircraft power failure
OFF| —| Back-up battery power is manually switched OFF
READY| —| Back-up battery power is “ready” to automatically power a single EIS if aircraft main power failure is sensed
Voltage| —| Indication of backup battery system voltage only

SYSTEM OPERATION

Under normal operating conditions, the EBBS Panel will be controlled by the flight crew. The flight crew will put the backup battery into standby, or “READY” mode by toggling the switch from the OFF position to the READY position during the preflight phase. The charge status (state of charge) of the backup battery can be observed during Pre-flight and monitored during operations when the switch remains in the READY position.

When the switch is in the READY position, the backup battery system automatically monitors the aircraft electrical system and the backup battery will remain in a standby state until the aircraft system voltage falls below the specified values listed in the battery manufacturer installation manual. For 12V aircraft, the minimum aircraft system voltage is 11V. For 24V aircraft, the minimum system voltage is 22V. When the aircraft system voltage falls below the specified minimum system voltage, the backup battery will automatically isolate one EIS that has been connected to the backup battery and provide power to the EIS for a minimum of 60 minutes.

If the aircraft electrical system recovers and attains acceptable voltage over the minimum specified (11V for 12V aircraft or 22V for 24V aircraft), the backup battery will cease supplying power to the EIS connected to it and return to the power supplied from the aircraft electrical system. In this state, the backup battery will recharge itself from the aircraft’s electrical system to the nominal voltage.

The backup battery system operates automatically once the Integrated Back-up Battery System Master Switch is set to BACKUP ENABLE (see STC# SA04400NY, AFMS 725.0005) and the EBBS Panel rocker switch is positioned to READY as part of the preflight procedures. The flight crew must also put the system in the OFF mode as part of the post-flight procedures.

The Airplane Flight Manual (AFM) procedures will be updated to include activating the backup battery system into the READY mode as part of the starting procedures and selecting the backup battery system into the OFF mode as part of the shutdown procedures.

Limitations

No Change

Emergency Procedures

LOSS OF MAIN AIRCRAFT ELECTRICAL POWER

Operate the aircraft Master Power Switch per for the Emergency Procedure checklist already established for the aircraft.
Ensure the Back-up Battery Panel switch is positioned to READY.
Land aircraft as soon as practical to resolve the loss of main electrical power.
WARNING
DO NOT TURN OFF Electrical Ignition Systems, as engine failure may occur.
IF AMBER “BATTERY IN USE” LED ILLUMINATED
Land aircraft as soon as practical to resolve the loss of main electrical power.

CAUTION
When the aircraft’s main bus voltage falls below the specified minimum, the backup battery will automatically power the connected EIS for 60 minutes (minimum).

Normal Procedures

Preflight

Add the following series of steps:

Master Switch – OFF
Back-up Battery Panel Switch – READY (Verify amber “BATTERY IN USE” LED illuminated)
Voltage – CHECK
- 12V system acceptable range: 12-15V
- 24V system acceptable range: 24-29V
  NOTE
  If the voltage is less than the acceptable range, then charge the backup battery before continuing. Refer to the backup battery manufacturer’s instructions on how to properly charge the battery.
EIS Switches – ON (Verify that either EIS #1 or EIS #2 green LED illuminated)
EIS Switches – OFF
Master Switch – ON
Amber “BATTERY IN USE” LED – EXTINGUISHED (Verify)
NOTE
This step confirms the main aircraft power is sufficient to Energize the EIS. If the amber “BATTERY IN USE” LED Remains illuminated, then the main aircraft voltage is Insufficient (low). Resolved the issue before continuing.
Battery Backup Panel Switch – OFF Position
Master Switch – OFF