Midcontinent 4300-6 Series Manuale

MANUAL NUMBER 9015834-2

REV. A January 4, 2011

PILOT’S GUIDE

for the

4300-6XX Series Electric Attitude Indicator

with Battery Backup

Mid-Continent Instruments and Avionics

9400 E. 34th Street N., Wichita, KS 67226 USA

Phone 316-630-0101 Fax 316-630-0723

[email protected]

Rev. A January 4, 2011 Page 2 of 11 Manual # 9015834-2

Pilot’s Guide

Congratulations on selecting one of the most advanced new aviation products. The design

team at Mid-Continent has incorporated four decades of experience with aircraft

instrumentation to bring you the best possible reliability and value in aviation. We are

proud to offer the finest Attitude Indicator in its class. New technology allows our unit to run

twice as many hours as older designs. Our self-contained emergency power feature offers

pilots a level of safety never before available to fellow aviators. All this is backed by Mid-

Continent’s world class reputation for high quality and responsive service.

J. Todd Winter

President

Forward

This manual provides operational instructions for use by persons who operate aircraft in

accordance with applicable Federal Aviation Regulations (Title 14 CFR).

We welcome your comments concerning this manual. Although every effort has been

made to keep this manual free of errors, some may occur. When reporting a specific

problem, please describe it briefly and include the manual part number, the

paragraph/figure/table number, and the page number. Please email or send your

comments to:

Mid-Continent Instruments and Avionics

Attn: Technical Publications

9400 E. 34th ST North

Wichita, KS 67226 USA

Phone 316-630-0101 Fax 316-630-0723

[email protected]

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 3 of 11 Manual # 9015834-2

Pilot’s Guide

Table of Contents

Page

EAI Function

Figure 1 4

Section 1 General Description

1.1 Purpose 5

1.2 Functional Description 5

Section 2 Operation

2.1 General 6

2.2 Preflight Checks 6

2.3 Preflight Checklist, Normal Operation 6

2.4 Standby Operation, Emergency Mode 6

2.5 Standby Battery Check 8

2.6 Shutdown 8

Section 3 Equipment Limitations

Equipment Limitations 8

Section 4 Service Reminder

Standby Battery Continued

Airworthiness 9

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 4 of 11 Manual # 9015834-2

Pilot’s Guide

EAI Function

Figure 1

(Representative View)

Roll Pointer: A) Fixed roll pointer: Indicates aircraft roll displacement relative to a

rotating roll dial.

Gyro Warning Flag: If loss of operating voltage should occur, gyro warning flag will come

into view.

Display: Lower area of display, when referenced to the symbolic airplane,

indicates aircraft nose is below horizon or in a dive attitude. Upper

area of display indicates aircraft nose is above horizon or in a climb

attitude.

Symbolic Airplane: Indicates roll and pitch attitude relative to the horizon. The symbolic

airplane may be delta or traditional shape. It can be moved (pitch only)

using the symbolic airplane adjustment knob.

Horizon Line: Indicates earth horizon relative to aircraft pitch and roll attitude.

Caging knob:

(Quick Erect) When pulled, manually erects the gyro vertical to the case orientation.

Wings level to the horizon.

Symbolic Airplane

Adjustment Knob: Used to adjust the symbolic airplane.

Slip Indicator (option) Rolling ball indicates sideways slip or skid in a turn.

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 5 of 11 Manual # 9015834-2

Pilot’s Guide

1 General Description

1.1 Purpose

The Model 4300-6xx Electric Attitude Indicator has two purposes:

1. To function as a primary and/or standby attitude indicator.

2. To continue to operate as a primary and/or standby attitude indicator in the event

that the aircraft main DC power source is interrupted or has failed in flight.

In the event that aircraft electrical power is lost, the indicator will switch to an internal

backup power source (rechargeable sealed lead acid battery) to permit continued

operation of the indicator.

1.2 Functional Description

The 4300-6xx Electric Attitude Indicator offers the unique feature of a self-contained

standby power source. Advances in the design of this gyro system allow it to operate for

approximately one hour after main input power is lost, depending on the battery condition

at the time of power failure.

The indicator requires 10 to 32 VDC input voltage. An integral dial lighting system features

a user replaceable light tray assembly. It operates from the aircraft lighting bus and is

available in 5V, 14V, or 28V versions. In standby power mode, low intensity LED powered

dial lighting is automatically turned on to provide nighttime visibility.

CAUTION:

A RED WARNING FLAG DROPS INTO VIEW TO INDICATE THAT THE

GYRO MOTOR IS NOT RECEIVING SUFFICIENT POWER TO OPERATE.

THIS WILL NORMALLY OCCUR ONLY IF THE UNIT IS TURNED OFF, OR

AFTER THE INTERNAL STANDBY BATTERY IS EXHAUSTED.

A STEADY HALF-BRIGHT AMBER STATUS LIGHT AT THE BOTTOM

LEFT OF THE INDICATOR INDICATES THAT MAIN D.C. POWER IS

INTERRUPTED OR HAS FAILED AND THAT THE INDICATOR IS

RUNNING ON ITS INTERNAL BATTERY. FURTHER ACTION IS

REQUIRED TO TURN OFF STANDBY BATTERY OPERATION (SEE

SECTION 2.4).

The internal battery is designed for emergency use only. Storage at high ambient

temperatures, extended discharging, extended lack of charging, misuse and age will

require early battery replacement. Replacement can be done in the field with or without

removal of the attitude indicator. Do not operate this instrument without the specified

battery intact. Battery substitution, modification, misuse and lack of specified maintenance

will void all warranties and hold the manufacturer harmless from any and all claims or legal

actions.

Refer to an FAA authorized maintenance facility for testing and maintenance of this

instrument excluding battery or light tray replacement.

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 6 of 11 Manual # 9015834-2

Pilot’s Guide

2 Operation

2.1. General

This section describes the Model 4300-6xx Electric Attitude Indicator operating

procedures. The indicator is required to be installed in an aircraft with the specified inputs

applied. Figure 1 provides an illustration of a typical Model 4300 display and a table

describing indicator functions.

2.2 Preflight checks

The following operational procedures are recommended when preparing the indicator for

use:

CAUTION:

THE INDICATOR MAY BE DAMAGED IF THE “PULL TO CAGE” KNOB

IS RELEASED WITH A “SNAP”. LOWER THE “PULL TO CAGE” KNOB

AVOIDING A “SNAP” RELEASE.

2.3 Preflight Checklist, Normal Operation

A. Master switch: On.

B. Gyro warning flag (red): Out of view.

C. Pull to cage knob: Extend fully and return.

D. Manually adjust pitch attitude presentation: As required.

NOTE:

Indicator may be momentarily caged (also known as ‘quick erect’) by pulling “PULL TO

CAGE” knob to the fully extended position, holding knob until the display stabilizes, and

then allowing the knob to return to the normal position.

2.4 Standby Operation, Emergency Mode

A. Amber Light Steady and Half-Bright

When the instrument switches to standby battery power, the amber STBY PWR

light on the lower left of the unit will light up half-bright. This is intended to attract the

pilot’s attention and indicate that there has been a loss of primary power to the 4300

Attitude Indicator. If no further action is taken, the unit will continue operating on the

standby battery for approximately one (1) hour or until the battery is exhausted. An

independent standby dial lighting system also operates in this mode. The red gyro

warning flag remains out of view, which indicates the gyroscope is valid and running

on standby battery power. Pushing the STBY PWR button on the face of the

instrument will turn off the unit.

Restoring aircraft power will clear any standby operation and resume automatic

battery charging.

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 7 of 11 Manual # 9015834-2

Pilot’s Guide

B. In-Flight Emergency Procedure - Loss of Main DC Power

In the event of a loss or interruption of main power, the unit will immediately and

automatically switch to standby power. The amber standby power light will turn on,

warning the pilot that the Electric Attitude Indicator has lost its main DC power

source. The user must manually press the STBY PWR button to turn the unit off of

standby power. Unless the STBY PWR button is pressed, the indicator will run for

approximately one hour if the battery was fully charged or until main DC power is

restored. If the gyro warning flag is out of view, the indicator is operating with main

or standby power. If the red warning flag is in view, the indicator is inoperative and

must not be used.

C. Standby Operation Ground Check - Emergency Mode

1. Master switch: On – Unit running for 5 minutes minimum –

Red gyro warning flag out of view

2. Master switch: Off

3. Amber light: Illuminated, half-bright.

4. Gyro warning flag: Not in view.

5. Press “STBY PWR” button: Once

6. Amber light: Extinguished.

7. Gyro warning flag: In view.

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 8 of 11 Manual # 9015834-2

Pilot’s Guide

2.5 Standby Battery Check

Standby battery test is recommended only during routine ground or flight operations.

1. Master Switch: On – Unit running for 5 minutes minimum – Red gyro warning

flag out of view.

2. Press and hold “STBY PWR” button for approximately four seconds. Gyro is now in

a one-minute battery test mode. Amber LED will turn on during this test sequence.

3. Green light illuminated during full test sequence: Standby battery is good.

4. Red light illuminated anytime during one-minute test sequence: Battery is not

charged and may require replacement. Refer to installation manual P/N 9017205

for instructions.

NOTE

Standby internal dial light automatically illuminates when Electric Attitude

Indicator is in the standby mode. This light has no dimming capabilities.

2.6 Shutdown

Upon shutdown of the aircraft the unit will automatically and immediately transition to

standby power. The gyro must be shutdown during post-flight shutdown by pressing the

“STBY PWR” button once. The red gyro warning flag will come into view. If the indicator

is allowed to operate in Emergency Power Mode long enough to completely drain

the battery, then battery service will be required before use in Emergency Mode

again.

*******

WARNING: The unit does not distinguish between loss of power in

flight (during an emergency) and loss of power during normal post-

flight shutdown.

Therefore, it is REQUIRED to turn off the standby battery backup power after

each flight. Failure to do so will deplete the battery and cause permanent

damage, requiring replacement of the standby battery.

*******

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 9 of 11 Manual # 9015834-2

Pilot’s Guide

3 Equipment Limitations

Actual operation time on the standby battery may vary considerably depending on

temperature, charge status, and battery condition. Low temperatures below 32F will

temporarily degrade battery capacity. A poorly maintained battery will suffer accelerated

degradation. Extended storage in a discharged state or over-charging will permanently

damage a battery. Complete charging is required to bring the battery up to full capacity if it

has been stored for more than four months or if it has been partially discharged.

Internal chemistry will slowly degrade battery capacity over several years of operation

even when correctly maintained. Recommended replacement interval for the standby

battery is 3 years due to naturally diminished capacity.

Operating Instructions

4300-6xx Series Electric Attitude Indicator

Rev. A January 4, 2011 Page 10 of 11 Manual # 9015834-2

Pilot’s Guide

4. Service Reminder

Standby Battery P/N 9015607

CONTINUED AIRWORTHINESS

This reminder is to advise of the proper maintenance for the Standby Battery

manufactured by Mid-Continent Instruments and Avionics Regular maintenance of the

Standby Battery should be done at the following intervals. Additionally, battery

replacement is recommended after three (3) years of use.

1. In normal use the 4300-6xx Attitude Indicator supplies the proper float charge

voltage to maintain the Standby Battery at peak capacity. If the 4300-6xx has not

been operated for an extended period (more than 3 months) the Standby Battery

will slowly self-discharge. Self-discharge rates are directly related to the storage

temperature. The higher the storage temperature the faster the self-discharge rate.

Therefore, the Standby Battery should be periodically charged or removed from the

installation and maintained on a charger per current installation manual number

9015762.

****WARNING****

Battery out gassing and a rotten egg odor may occur due to prolonged

high rate overcharging and may result in Standby Battery damage. MCI

recommends that the Standby Battery assembly be replaced if out gassing

has occurred.

2. On at least an annual basis, as well as any time there may be a question about

Standby Battery performance (life) a full capacity test should be performed. To

perform a full capacity test use one of the following methods.

a. Use Mid-Continent Instruments and Avionics Battery Charger/Tester P/N

36029. When in the capacity test mode this Charger/Tester will charge

the battery and measure the time required for discharge (60 minutes

minimum). The unit will then automatically switch to the charge/float

mode to re-charge and maintain the Standby Battery at full charge.

****WARNING****

The Standby Battery may be permanently damaged if it is left in a

discharged state. Recharge a discharged Standby Battery as

soon as possible and maintain with a float charge for maximum

Standby Battery life.

b. Refer to the current unit installation manual number 9015762 for other

methods to perform the full capacity test.

3. Recommended complete replacement interval for the Standby Battery is 3

years because of diminished capacity.

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