Commercial 

Airplanes 777

Service Bulletin

ALERT

Number: 777-34A0192

Original Issue: December 14, 2012

ATA System: 3433

SUBJECT: NAVIGATION - Radio Altimeter System - Low Range Radio Altimeter Antenna

Replacement

Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15

CFR 300-774). An export license may be required before it is used for development, production or use by foreign

persons from specific countries. The controller of this data has the individual responsibility to abide by all export

laws.

ECCN: 9E991

BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET

Copyright © 2012 Boeing.

Unpublished Work. All Rights Reserved.

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are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The

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BLANK PAGE
Table of Contents

Summary ...................................................... 5

1. PLANNING INFORMATION ........................................ 9

A. Effectivity ................................................ 9

1. Airplanes ............................................. 9

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

E. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2. Data Supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . . 13

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

M. Software Accomplishment Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

A. Material - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

C. Parts Necessary for Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1. Kits/Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2. Parts and Materials Supplied by the Operator . . . . . . . . . . . . . . . . . . . . . . . . 16

3. Parts Modified and Reidentified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4. Parts Removed and Not Replaced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

E. Special Tooling - Price and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . . . 16

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

FIGURE 1: STA 623.5 - LOW RANGE RADIO ALTIMETER TRANSMIT ANTENNAS - REPLACEMENT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

FIGURE 2: STA 665.5 - LOW RANGE RADIO ALTIMETER RECEIVE ANTENNAS - REPLACEMENT . 22

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BLANK PAGE
Commercial 

Airplanes 777

Service Bulletin

ALERT

Summary Number: 777-34A0192

Original Issue: December 14, 2012

ATA System: 3433

SUBJECT: NAVIGATION - Radio Altimeter System - Low Range Radio Altimeter Antenna

Replacement

THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH

1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OWNER.

CONCURRENT REQUIREMENTS

None.

BACKGROUND

This service bulletin gives instructions to replace the six existing Low Range Radio Altimeter (LRRA) antennas

with new improved antennas for airplanes equipped with Thales Radio Altimeter Transceivers. If this service

bulletin is not done, the radio altimeter data reported by the LRRA antennas may not meet the predicted reliability

and data integrity requirements, which can result in unsafe flight condition.

Operators have reported erratic LRRA operation while the airplane is airborne even though operation is normal

when the airplane is on the ground. The LRRA events were intermittent and have not been duplicated on the

ground. The symptoms can include the following:

– Large differences between captain's and first officer's radio altitudes or a negative altitude in air

– "NO LAND 3" or "NO AUTOLAND" Engine Indication and Crew Alerting System (EICAS) message

– Autopilot disconnect, inability to engage Autopilot, or Flight Directors bias-out-of view

– Autothrottle disconnect, Autothrottle retard, or inability to engage Autothrottle into SPD (Speed) mode

– Unexpected Configuration Warnings after takeoff, during approach, or during go-around

– Missing or inappropriate aural height callouts

– Unavailability of auto speedbrake via "AUTO SPEEDBRAKE" EICAS message

– Nuisance or missing Ground Proximity Warning System (GPWS) warnings

– Electronic Engine Control (EEC) indicating ground mode and engine going to ground idle

– Inability to engage Lateral Navigation (LNAV)

Accomplishment of this service bulletin will improve the reliability of the radio altimeter data reported by the

LRRA system.

Boeing Service Related Problem (SRP) 777-SRP-34-0120 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 777 FTD 34-10013 is related to this service bulletin.

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This table is provided to operators for planning purposes only. Refer to the applicable sections for more

information.

Planning Data Affected Reference

Spares Affected Yes Paragraph 1.A.2., Spares Affected

Paragraph 1.E., Compliance and Paragraph

1.F., Approval

AD Related No

Weight and Balance Change No Paragraph 1.H., Weight and Balance Changes

Electrical Load Changed No Paragraph 1.I., Electrical Load Data

Publications Affected Yes Paragraph 1.K., Publications Affected

Airplane Flight Operations Affected (Flight Crew No Paragraph 1.K., Publications Affected

Operations Manual and/or FAA Approved Airplane Flight Manual)

Kits/Parts Required Yes Paragraph 2.C.1., Kits/Parts

Paragraph 2.C.2., Parts and Materials Supplied

by the Operator

Operator Supplied Material No

Paragraph 2.F., Special Tooling Necessary to

do this Service Bulletin

Special Tooling Required No

ACTION (PRR 62777-85S)

Get access to the area below the forward cargo compartment. At STA 623.5 and STA 665.5, replace the six

existing LRRA antennas with new antennas. Do the system test of the Radio Altimeter System.

EFFECTIVITY

777-200/200LR/300/300ER, 777F Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected

airplane(s).

COMPLIANCE

Boeing recommends that the change given in this service bulletin be done within 36 months after the original

issue date of this service bulletin.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

MANPOWER

Airplanes Total Task Hours Elapsed Hours

Group 1 6.30 6.30

MATERIAL INFORMATION

Boeing Supplied Kits/Parts.

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Refer to Paragraph 2.A., Material - Price and Availability.

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BLANK PAGE
Commercial 

Airplanes 777

Service Bulletin

ALERT

Number: 777-34A0192

Original Issue: December 14, 2012

ATA System: 3433

SUBJECT: NAVIGATION - Radio Altimeter System - Low Range Radio Altimeter Antenna

Replacement

THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH

1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO

THE NEW OWNER.

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index D624W001 Part 3 for Airplane Variable Number, Line Number, and

Serial Number data.

This service bulletin is for the airplane(s) shown below. An equivalent change is on subsequent

production airplanes. Refer to PRR 62777-85S for data about this change.

GROUP CONFIGURATION DESCRIPTION

Airplanes equipped with Thales Radio Altimeter Transceivers and

with the LRRA antennas part number S67-2002-18 installed.

1 -

Airplane Models:

777-200, 777-200LR, 777-300, 777-300ER, 777F

Variable Number Group

WA196 - WA198 1

WB101 - WB106 1

WB161 - WB177 1

WB306 - WB307 1

WB631 - WB638 1

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Variable Number Group

WB646 - WB649 1

WC111 - WC120 1

WC581 1

WC586 1

WD046 - WD055 1

WD581 - WD599 1

WD606 - WD609 1

WD621 - WD632 1

WD671 - WD677 1

WD846 - WD867 1

WD921 - WD923 1

WE091 - WE093 1

WE186 - WE204 1

WE261 1

WF031 - WF035 1

WF131 1

2. Spares Affected

Examine your spares supply for the parts or components identified below. If any parts or components

are found, refer to Paragraph 2.C.1., Kits/Parts for the recommended action.

Part Number

S67-2002-18

B. Concurrent Requirements

None.

C. Reason

This service bulletin gives instructions to replace the six existing Low Range Radio Altimeter (LRRA)

antennas with new improved antennas for airplanes equipped with Thales Radio Altimeter Transceivers.

If this service bulletin is not done, the radio altimeter data reported by the LRRA antennas may not

meet the predicted reliability and data integrity requirements, which can result in unsafe flight condition.

Operators have reported erratic LRRA operation while the airplane is airborne even though operation

is normal when the airplane is on the ground. The LRRA events were intermittent and have not been

duplicated on the ground. The symptoms can include the following:

– Large differences between captain's and first officer's radio altitudes or a negative altitude in air

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BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
– "NO LAND 3" or "NO AUTOLAND" Engine Indication and Crew Alerting System (EICAS) message

– Autopilot disconnect, inability to engage Autopilot, or Flight Directors bias-out-of view

– Autothrottle disconnect, Autothrottle retard, or inability to engage Autothrottle into SPD (Speed)

mode

– Unexpected Configuration Warnings after takeoff, during approach, or during go-around

– Missing or inappropriate aural height callouts

– Unavailability of auto speedbrake via "AUTO SPEEDBRAKE" EICAS message

– Nuisance or missing Ground Proximity Warning System (GPWS) warnings

– Electronic Engine Control (EEC) indicating ground mode and engine going to ground idle

– Inability to engage Lateral Navigation (LNAV)

Accomplishment of this service bulletin will improve the reliability of the radio altimeter data reported

by the LRRA system.

Boeing Service Related Problem (SRP) 777-SRP-34-0120 is related to this service bulletin.

Boeing Fleet Team Digest (FTD) 777 FTD 34-10013 is related to this service bulletin.

D. Description

Get access to the area below the forward cargo compartment. At STA 623.5 and STA 665.5, replace

the six existing LRRA antennas with new antennas. Do the system test of the Radio Altimeter System.

The work in this service bulletin is done in the maintenance zone(s) given below.

Affected Maintenance Zones

Model Zone

777-200, 777-200LR, 777-300, 123, 124, 211, 212

777-300ER, 777F

E. Compliance

Boeing recommends that the change given in this service bulletin be done within 36 months after the

original issue date of this service bulletin.

F. Approval

This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified

in this service bulletin comply with the applicable regulations and are FAA approved, as well as European

Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved

airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on

the airplane in its original Boeing delivery configuration or as modified by other approved Boeing

changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also affected

by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval

before incorporating this service bulletin.

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ALERT ALERT
G. Manpower

The table below shows an estimate of the task hours necessary to do this change for each airplane.

This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator

task hour data if necessary. The estimate does not include lost time. These are some examples of lost

time:

• Time to adjust to the workplace

• Time to schedule the work

• Time to inspect the work

• Time to cure the materials

• Time to make the parts

• Time to find the tools.

Task Number of Persons Task Hours Elapsed Hours

Open Access 1 0.25 0.25

FIGURE 1 1 2.40 2.40

FIGURE 2 1 2.40 2.40

Close Access 1 0.25 0.25

Test 1 1.00 1.00

TOTAL FOR EACH AIRPLANE 6.30 6.30

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Engineering Change Memo PRR 62777-85S

b. Boeing Service Related Problem (SRP) 777-SRP-34-0120

c. Service Bulletin Index D624W001

d. 777 Aircraft Maintenance Manual (AMM) 34-33-00, 34-33-02

e. 777 Fleet Team Digest (FTD) 34-10013

2. Data Supplied with this Service Bulletin:

None.

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BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
3. Installation Drawings Used in the Preparation of this Service Bulletin:

Drawing Number Title

284W3034 Antenna Installation - Low Range Radio Altimeter

The table above lists applicable drawings used to prepare this service bulletin. The drawings are

not necessary to make the specified changes, and are not supplied with this service bulletin. The

drawings may not be applicable to all airplane configurations or operators.

K. Publications Affected

1. Publications:

Publication Chapter-Section

777 Aircraft Maintenance Manual 34-33

777 Wiring Diagram Manual Equipment List

777 Illustrated Parts Catalog 34-33

2. Damage Tolerance Based Structural Inspections:

Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue

Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the

Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary.

L. Interchangeability and Intermixability of Parts

Refer to Paragraph 2.C., Parts Necessary for Each Airplane, for interchangeability and intermixability

information.

M. Software Accomplishment Summary

Not affected.

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ALERT ALERT

BLANK PAGE
2. MATERIAL INFORMATION

A. Material - Price and Availability

Boeing can supply the kits shown in Paragraph 2.C., Parts Necessary for Each Airplane. Operators

are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin.

The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgment.

Prices are in United States Dollars. Terms: Net 30 days.

Reference this service bulletin and submit your purchase order by one of these methods:

1. Order on-line via ATA Spec 2000 or The Boeing PART Page

2. Fax to (206) 662-7145

REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER

AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION

Unit Price as of

the original issue

date of this Service Bulletin (US

Dollars)

ROLT as of the

original issue

date of this Service Bulletin (Calendar Days)

Kit Number Name Date QTY

Top Kit - Low Range Radio 12/06/12 20 139 378.00

Altimeter Antennas Replacement

005W3521-1

B. Industry Support Information

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

C. Parts Necessary for Each Airplane

1. Kits/Parts

To get the kits/parts shown below, refer to Paragraph 2.A., Material - Price and Availability.

NOTE: One top kit and the items shown in Paragraph 2.C.2., Parts and Materials Supplied by

the Operator, are necessary for each airplane. The Top Kit is divided into Figure kits for

each installation figure shown in the table below.

Figure Kit

Top Kit 1 2

005W3521-1 1 1

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ALL

KIT 005W3521-1

Notes

Existing Part

Name Number

Figure

New Part Number

1 2

Qty

BOLT, 100 DEG BACB30LH3-6 (a)

CROSS

BACB30LH3-6 4 4

BOLT, 100 DEG BACB30LH3-11 (a)

CROSS

BACB30LH3-11 4 4

BOLT, 100 DEG BACB30LH3-18 (a)

CROSS

BACB30LH3-18 4 4

S67-2002-28 3 3 ANTENNA-RA S67-2002-18 (a) (b)

(a) Discard the existing part.

(b) This part is used in production.

2. Parts and Materials Supplied by the Operator

No special parts or materials are necessary to do the change in this service bulletin. But, parts

and materials in the manuals given in Paragraph 1.J., References, can be necessary. Examine

operator part and material supply to make sure all necessary parts and materials are available.

3. Parts Modified and Reidentified

None.

4. Parts Removed and Not Replaced

None.

D. Parts Necessary to Change Spares

None.

E. Special Tooling - Price and Availability

None.

F. Special Tooling Necessary to do this Service Bulletin

No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance

and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine

operator tool supply to make sure all necessary tools are available.

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BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

CAUTION: KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL

PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL,

METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE

DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR

OTHER ELECTRICAL DAMAGE.

NOTE: 1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for

definition of the acronyms.

2. Obey all of the warnings and cautions given in the specified manual sections.

3. Use the approved fastener and process material substitutions in accordance with

SRM Chapter 51.

4. If the length of any fastener specified in this service bulletin does not meet installation

standards given in SRM Chapter 51, then a fastener of the same specification, or

an approved substitute, with a length which meets the installation standards given

in SRM Chapter 51 may be used. In addition, washers may be installed for fastener

grip length in accordance with SRM Chapter 51.

5. These work instructions refer to procedures included in other Boeing documents.

When the words "refer to" are used and the operator has an accepted alternative

procedure, the accepted alternative procedure can be used. When the words "in

accordance with" are included in the instruction, the procedure in the Boeing document

must be used.

6. The instructions in Paragraph 3.B., Work Instructions and the figures can include

operation of tools or test equipment. Boeing Engineering Tool Drawings, the Illustrated

Tool and Equipment Manual, and the Special Tool and Ground Handling Drawing

Index contain data on versions of the tools or test equipment that you can use. It is

permitted to use replaced tools. It is not permitted to use superseded tools.

7. If it is necessary to remove more parts for access, you can remove those parts. If

you can get access without removing identified parts, it is not necessary to remove

all of the identified parts. Jacking and shoring limitations must be observed.

8. Where the work instructions include installation of a kept part, a new or serviceable

part with the same part number can be installed as an alternative to the kept part.

9. This service bulletin includes functional test procedures for the systems changed by

this service bulletin. More functional tests can possibly be necessary in accordance

with standard maintenance practices because of interruption to other airplane systems.

B. WORK INSTRUCTIONS

1. Get access to the area below the forward cargo compartment.

2. At STA 623.5, replace the existing left, right and center Low Range Radio Altimeter (LRRA) transmit

antennas with new antennas in accordance with FIGURE 1.

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ALERT ALERT
3. At STA 665.5, replace the existing left, right and center LRRA receive antennas with new antennas

in accordance with FIGURE 2.

4. Do the system test of the Radio Altimeter System. Refer to 777 AMM 34-33-00 as an accepted

procedure.

5. Put the airplane back to a serviceable condition.

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ALERT ALERT
FIGURE 1: STA 623.5 - LOW RANGE RADIO ALTIMETER TRANSMIT ANTENNAS - REPLACEMENT

(SHEET 1 OF 3)

Export Controlled ECCN: 9E991 - BOEING

PROPRIETARY - Copyright © Unpublished

Work - See page 1 for details.

Original Issue: December 14, 2012

777-34A0192

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BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
FIGURE 1: STA 623.5 - LOW RANGE RADIO ALTIMETER TRANSMIT ANTENNAS - REPLACEMENT

(SHEET 2 OF 3)

Export Controlled ECCN: 9E991 - BOEING

PROPRIETARY - Copyright © Unpublished

Work - See page 1 for details.

Original Issue: December 14, 2012

777-34A0192

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BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for this figure.

Step Task Name Identification Qty More Data

1 Remove ANTENNA - RA S67-2002-18 1 (a)

Remove BOLT BACB30LH3-18 2

Remove BOLT BACB30LH3-11 2

2 Install (New) ANTENNA-RA S67-2002-28 1 (a)

BOLT, 100 DEG BACB30LH3-18 2

CROSS

3 Install (New)

BOLT, 100 DEG BACB30LH3-11 2

CROSS

4 Install (New)

5 Remove ANTENNA - RA S67-2002-18 1 (a)

Remove BOLT BACB30LH3-6 4

6 Install (New) ANTENNA-RA S67-2002-28 1 (a)

BOLT, 100 DEG BACB30LH3-6 4

CROSS

Install (New)

7 Remove ANTENNA - RA S67-2002-18 1 (a)

Remove BOLT BACB30LH3-18 2

Remove BOLT BACB30LH3-11 2

8 Install (New) ANTENNA-RA S67-2002-28 1 (a)

BOLT, 100 DEG BACB30LH3-18 2

CROSS

9 Install (New)

BOLT, 100 DEG BACB30LH3-11 2

CROSS

10 Install (New)

(a) Refer to 777 AMM 34-33-02 as an accepted procedure.

FIGURE 1: STA 623.5 - LOW RANGE RADIO ALTIMETER TRANSMIT ANTENNAS - REPLACEMENT

(SHEET 3 OF 3)

Export Controlled ECCN: 9E991 - BOEING

PROPRIETARY - Copyright © Unpublished

Work - See page 1 for details.

Original Issue: December 14, 2012

777-34A0192

21 of 24

BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
FIGURE 2: STA 665.5 - LOW RANGE RADIO ALTIMETER RECEIVE ANTENNAS - REPLACEMENT

(SHEET 1 OF 3)

Export Controlled ECCN: 9E991 - BOEING

PROPRIETARY - Copyright © Unpublished

Work - See page 1 for details.

Original Issue: December 14, 2012

777-34A0192

22 of 24

BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
FIGURE 2: STA 665.5 - LOW RANGE RADIO ALTIMETER RECEIVE ANTENNAS - REPLACEMENT

(SHEET 2 OF 3)

Export Controlled ECCN: 9E991 - BOEING

PROPRIETARY - Copyright © Unpublished

Work - See page 1 for details.

Original Issue: December 14, 2012

777-34A0192

23 of 24

BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for this figure.

Step Task Name Identification Qty More Data

1 Remove ANTENNA - RA S67-2002-18 1 (a)

Remove BOLT BACB30LH3-18 2

Remove BOLT BACB30LH3-11 2

2 Install (New) ANTENNA-RA S67-2002-28 1 (a)

BOLT, 100 DEG BACB30LH3-18 2

CROSS

3 Install (New)

BOLT, 100 DEG BACB30LH3-11 2

CROSS

4 Install (New)

5 Remove ANTENNA - RA S67-2002-18 1 (a)

Remove BOLT BACB30LH3-6 4

6 Install (New) ANTENNA-RA S67-2002-28 1 (a)

BOLT, 100 DEG BACB30LH3-6 4

CROSS

Install (New)

7 Remove ANTENNA - RA S67-2002-18 1 (a)

Remove BOLT BACB30LH3-18 2

Remove BOLT BACB30LH3-11 2

8 Install (New) ANTENNA-RA S67-2002-28 1 (a)

BOLT, 100 DEG BACB30LH3-18 2

CROSS

9 Install (New)

BOLT, 100 DEG BACB30LH3-11 2

CROSS

10 Install (New)

(a) Refer to 777 AMM 34-33-02 as an accepted procedure.

FIGURE 2: STA 665.5 - LOW RANGE RADIO ALTIMETER RECEIVE ANTENNAS - REPLACEMENT

(SHEET 3 OF 3)

Export Controlled ECCN: 9E991 - BOEING

PROPRIETARY - Copyright © Unpublished

Work - See page 1 for details.

Original Issue: December 14, 2012

777-34A0192

24 of 24

BOEING SERVICE BULLETIN 777-34A0192

ALERT ALERT