ZODIAC AEROSPACE SERVICES EUROPE

TECHNICAL PUBLICATION DEPARTMENT 

61, RUE PIERRE CURIE – CS20001 

78373 PLAISIR CEDEX - FRANCE 

Phone: +33 (0)1 61 34 19 24 - Fax: +33 (0)1 61 34 21 13

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No: 1 Page: 1/2

TRANSMITTAL SHEET 

This Transmittal Sheet applies to the issue 1, dated MAR 24/14, of Service Bulletin 

766983-28-002. 

REASON FOR REVISION 

Paragraph 1. A. (2) & Appendix I : P/N 768-055, 768-100, 798-038 instead of 768-055-0, 768-100-0, 

798-038-0. 

REVISION SEQUENCE 

Original Issue: OCT 15/13. 

Issue 1: MAR 24/14. 

 
ZODIAC AEROSPACE SERVICES EUROPE

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 2/2

PAGE LEFT BLANK INTENTIONALLY 
ZODIAC AEROTECHNICS

SENSING SYSTEMS 

SERVICE BULLETIN

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 1/20

TITLE: FUEL – FUEL PROBE – INSPECTION FOR POTENTIAL SPLICE CONDUCTOR 

SOLDERING DEFECT 

1. PLANNING INFORMATION 

A. Effectivity 

(1) Aircraft application 

This Service Bulletin applies to ATR 42/72 aircraft. 

(2) Equipment involved 

This Service Bulletin applies to Fuel Probes 766-046-2, 766-047-2, 766-048-2, 

766-793-1, 766-795-2, 766-796-2, 766-797-2, 766-983-1, 768-055, 768-100, 

798-038 listed in Appendix I, produced from June 2011 to August 2013 and not 

identified with letter “C” in the control box of the identification plate. 

B. Concurrent Requirements 

Affected customers should notify their usual Zodiac Aerospace Services contacts in 

regards of their location (See table 4. ZODIAC AEROSPACE SERVICES FACILITIES). 

C. Reason 

The purpose of this inspection is to check and repair if necessary the connection with 

splice conductor on the fuel probe. 

D. Description 

This inspection consists to check and repair if necessary the splice conductor connection 

on fuel probes. 

A discrepancy was found on the ground wire, due to a non-compliant soldering on the 

splice conductor. 

Letter “C” is applied on equipment once inspected (see paragraph 3. B. Identification). 

E. Compliance 

This inspection is RECOMMENDED. 

 
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 2/20

F. Approval 

The technical content of this document (rev.0) is approved under the Authority of DOA 

N°EASA. 21. J. 044. 

G. Manpower 

This Service Bulletin will be accomplished by Zodiac aircraft Sensing Systems 

Management (ZSSM) workshop within 15 working days from receipt of units. 

(1) 1 technician. 

(2) Check only: 1h00. 

(3) Complete operation: 1h45. 

H. Weight and Balance 

Not Changed. 

I. Electrical Load Data 

Not Changed. 

J. Software Accomplishment Summary 

Not Applicable. 

K. References 

CMM 28-42-72. 

L. Other Publications Affected 

Not changed. 

M. Interchangeability 

Not applicable. 

 
ZODIAC AEROTECHNICS

SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 3/20

2. MATERIAL INFORMATION 

A. Material – Price and Availability 

Application of this Service Bulletin is Free of Charge for equipment produced from June 

2011 to August 2013, listed in Appendix I and not identified with letter “C” in the control 

box of the identification plate. 

B. Industry Support Information 

(1) The Service Bulletin can be accomplished by ZSSM workshop, the inspection will be 

done within 15 working days from receipt of equipment. 

C. Material Necessary for Each Component 

Not Applicable. 

D. Re-identified Parts 

Not applicable. 

E. Tooling – Price and Availability 

Not Applicable. 

3. ACCOMPLISHMENT INSTRUCTIONS 

A. Procedure 

CAUTION: Step n°(1) of this procedure is optional and leads to a time-saving in case of 

compliant splice conductor. If step n°(1) cannot be accomplished, do step n°(3). 

(1) Do an X-ray inspection of the splice conductor installed in the support assembly of 

the fuel probe. Then do step n° (2). 
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 4/20

(2) Do a check of the splice conductor soldering according to the following tables (in 

case of doubt, refer to step n°(3)): 

(a) If the splice conductor is compliant as described in table below, do step n°(7) 

for the final testing instructions. 

COMPLIANT SPLICE CONDUCTOR 

KEYPOINTS FIGURES 

Melted soldering 

aligned on stripped 

surface 

(b) If the splice conductor is not compliant as described in table below, do step 

n°(3) for the disassembly instructions. 
ZODIAC AEROTECHNICS

SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 5/20

NON-COMPLIANT SPLICE CONDUCTOR 

KEYPOINTS FIGURES 

Level 1 defect: 

Soldering not aligned 

on the stripped surface 

Level 1 defect: 

Soldering is not melted 

Level 1 defect: 

Missing soldering 
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 6/20

NON-COMPLIANT SPLICE CONDUCTOR 

KEYPOINTS FIGURES 

Level 2 defect: 

Partially melted soldering 

(3) Disassemble the fuel probe according to the following steps and tables: 

TOOLS CONSUMABLES 

Hot air tool with digital display 

(STEINEL HG 2310 or equivalent), 

with reduction nozzle (STEINEL 

n°070618 or equivalent) 

Beveled branchwood stick 

Ø4mm. 

Flat-blade screwdriver 3.5x100 or 

equivalent 

--- 

(a) Soften glue with hot air tool to get access to the screws of the clamp. 

KEYPOINTS FIGURE 

T°C=300°C 

Airflow = mini 

 
ZOD

SENSING S

Date: MA

Revision

DIAC AE

SYSTEMS 

AR 24/14 

n No. 1 

(b) 

(c) 

(d) 

EROTEC

S

Strip glue

K

Risk of s

clamp 

Loosen th

Use the h

clamp. 

K

Risk of s

clamp 

CHNICS

SERVICE B

e with branc

KEYPOINT

scratching o

he four scre

hot air tool a

KEYPOINT

scratching o

BULLETIN

chwood stic

on the 

ews and wa

and branchw

on the 

N: 

k. 

shers and r

wood stick 

7669

FIG

remove the 

to remove t

FIG

983-2

GURE 

clamp. 

the remaini

GURE 

28-00

Page: 

ng glue on 

02

7/20

the 
Z

SE

Da

Re

ZODIAC

ENSING SYSTEMS

ate: MAR 24/

evision No. 1

(4) 

C AEROT

S

/14 

1

Do a visu

steps and 

Binocula

magnifyi

Binocula

magnifyi

equivale

(a) If th

step

- T

(rin

con

dis

sol

bet

the

- T

gro

(B)

(b) If th

n°(5

TECHNI

SERVI

al inspectio

tables: 

TOOLS 

ar microscop

ng lamp or 

KEYPOINT

ar microscop

ng lamp or 

nt 

e splice co

p n°(6) for th

KEYPOI

The solde

ng) is fully m

ntour 

cernable, 

der is 

tween the s

e ground wir

The shield

ound wire a

). 

e splice co

5) for the rew

ICS 

ICE BULL

on of the sp

pe or 

equivalent

T

pe or 

nductor sol

he assembly

COM

NTS 

r preform 

melted, its 

is no 

a fillet of 

visible 

shield and 

re (A). 

 and the 

are aligned 

onductor is 

wiring instru

NOT CO

LETIN: 

plice condu

ldering is c

y instruction

MPLIANT SP

not complia

uctions. 

OMPLIANT

76

ctor solderi

CONS

ompliant as

ns. 

PLICE CON

ant as desc

T SPLICE C

66983

ing, accord

SUMABLES

N/A 

FIGURE 

s described

NDUCTOR 

FIGURE 

cribed in ta

ONDUCTO

3-28-

P

ing to the f

S

d in table be

able below, 

OR 

-002

Page: 8/20

following 

elow, do 

do step 
ZOD

SENSING S

Date: MA

Revision

DIAC AE

SYSTEMS 

AR 24/14 

n No. 1 

(5) Do a

TO

Ho

231

(ST

So

The

Cu

EROTEC

S

K

In case

to 

a rewiring a

OOLS 

t air tool wit

10 or equiva

TEINEL n°0

ldering iron

ermal wire s

tting pliers 

CHNICS

SERVICE B

EYPOINT 

e of doubt, r

step n°(5).

ccording to

th digital dis

alent), with 

074616 or e

METCAL w

stripper (PB

BULLETIN

refer 

o the followin

splay (STEI

angled noz

quivalent) 

with thin-tip 

B150M or eq

N: 

ng steps an

NEL HG 

zzle 

STTC-036

quivalent) 

7669

FIGU

nd tables. 

CO

Desold

Groun

Splice c

Solder

983-2

URE 

ONSUMAB

dering braid

nd wire W10

conductor W

r W192456 

28-00

Page: 

LES 

d

04476 

W192116 

02

9/20
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 10/20

(a) Desolder the core of the coaxial cable (HI) from the connector and the ground 

wire (M) from the lug. 

KEYPOINT FIGURE 

Remove the red caps from 

the connectors. 

(b) Remove the coaxial cable from the support assembly. 

(c) Cut the coaxial cable very close to the splice conductor and discard the 

excess. 

KEYPOINT FIGURE 

Cutting very close to the splice 

conductor. 

(d) Remove the remaining solder from the lug of the ground wire and from the 

connector receptacle. 

(e) Strip off 25mm of the first insulation of the coaxial cable. 



HI

M
ZODIAC AEROTECHNICS

SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 11/20

KEYPOINT FIGURE 

Stripping = 25mm 

(f) Retract the braid to the maximum. 

FIGURE 

(g) Cut the braid. 

KEY POINT FIGURE 

Do not damage the second 

insulation. 

 
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 12/20

(h) Strip off 5mm of the first insulation again. 

KEYPOINT FIGURE 

Stripping = 5mm 

(i) Strip and tin the new ground wire W104476. 

KEYPOINTS FIGURE 

- Length = 50mm 

- Stripping = 5mm 

(j) Hold the ground wire on the coaxial cable and solder it very lightly. 

KEYPOINTS FIGURE 

- Insulations of the two 

cables are aligned. 

- The least possible 

soldering 

(k) Install the splice conductor on the stripped portion of the wire: 

KEYPOINTS FIGURE 

- Solder ring centered. 

- The two cables inserted in 

the largest splice conductor 

diameter. 

 

Ø large
ZOD

SENSING S

Date: MA

Revision

DIAC AE

SYSTEMS 

AR 24/14 

n No. 1 

(l) 

(m) 

(n) 

EROTEC

S

Prepare t

K

- Angled

n°07461

- T°C=38

- Airflow

- Prehea

Solder the

- Splice 

with the 

- Ring ce

surfaces

- Duratio

- Hot air 

oriented

Make sur

table belo

K

- The so

melted, 

discerna

is visible

shielder 

(A). 

- The sh

ground w

CHNICS

SERVICE B

the hot air to

KEYPOINTS

d nozzle ST

6 or equiva

80°. 

=mini. 

ating >1min

e splice con

KEYPOINT

conductor i

top of the n

entered in t

s. 

on : minimu

tool horizo

. 

re that the s

ow: 

KEYPOINT

older preform

its contour 

able, a fillet 

e between th

and the gro

ielder and t

wire are alig

BULLETIN

ool: 

S

EINEL 

alent. 

. 

nductor: 

TS 

n contact 

nozzle. 

he stripped

m of 18 s.

ntallysplice condu

TS 

m is fully 

is no 

of solder 

he 

ound wire 

the 

gned (B). 

N: 

uctor solde

7669

FIG

F

ring is comp

FIG

983-2

GURE 

FIGURE 

pliant as de

GURE 

28-00

Page: 1

escribed in 

02

3/20

the 
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 14/20

(o) Cut to length, strip and tin the ground wire (M) and the high impedance coaxial 

cable core (HI). 

KEYPOINT FIGURE 

Stripping: 5mm. 

(p) Solder the ground wire (M) on the lug of the support assembly. 

FIGURE 

 

M

HI
ZODIAC AEROTECHNICS

SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 15/20

(q) Solder the cable of high impedance (HI) on the connector receptacle. 

FIGURE 

(r) Make sure that the solderings are compliant. 

(s) Blow compressed air on the fuel probe. Make sure that there is no solder 

splatter into the clamp. 

 
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 16/20

(6) Assemble the fuel probe according to the following steps and tables. 

TOOLS CONSUMABLES QTY 

Flat-blade screwdriver 

3.5x100 or equivalent 

Screw G225032 4 

Point 7M14339-7M14340 

or equivalent 

Lock washer G772120 4 

--- Araldite 2011 (base 

2011/A=W192355 + hardener 

2011/B=W195356) 

1 

--- Clamp A791278 (if non-reusable) 1 

--- Cap G899087D7 2 

--- 95° Denaturized Ethylic Alcohol 1 

--- Cotton-swab 1 

(a) Tighten the 4 screws with the 4 lock washers on the clamp A791278. 

KEYPOINTS FIGURES 

- Do not reuse the initial 

screws. 

- Change the clamp if it is 

scratched. 

(b) Use a cotton-swab moistened with 95° Denaturized Ethylic Alcohol to remove 

the grease from the clamp. 

(c) Prepare a base-hardener mixture of Araldite. 

KEYPOINTS FIGURE 
ZODIAC AEROTECHNICS

SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 17/20

- Proportion by weight: 

Base 2011/A: 100 p.p. 

Hardener 25011/B: 80p.p. 

- Use of the mixture: 2h max. 

(d) Apply Araldite on the screw heads. 

(e) Remove any excess with a lint-free cloth. 

(f) Let polymerising at ambient temperature during a minimum of 8 hours. 

(7) Final testing 

Do the final testing of the fuel probe in accordance with "TESTING AND FAULT 

ISOLATION" chapter of CMM 28-42-72. 

 
Z

SE

Da

Re

ZODIAC

ENSING SYSTEMS

ate: MAR 24/

evision No. 1

B. Ident

(1) 

(2) 

C AEROT

S

/14 

1

tification 

After inspe

plate acco

TO

Punch w

M

KE

Light mal

Letter “C”

left side o

stamp. 

Install the 

TECHNI

SERVI

ection, app

ording to the

OOLS 

with letter “C

Mallet 

EYPOINTS 

let blows 

” on the righ

of the contro

protection 

ICS 

ICE BULL

ly letter “C”

e following t

QTY

C” 1 

1 

ht or 

ol 

caps on the

LETIN: 

” on the “Co

tables: 

CONSUM

Cap G899

---

e 2 connect

76

ontrol” box 

MABLES 

9087D7 

-

FIG

tors. 

66983

of the fuel 

QTY

2 

--- 

GURES 

3-28-

Pa

probe iden

002

age: 18/20

tification 
ZODIAC AEROTECHNICS

SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 19/20

4. ZODIAC AEROSPACE SERVICES FACILITIES 

EUROPE ASIA 

ZODIAC AEROSPACE SERVICES EUROPE 

61 rue Pierre Curie 

CS20001 

78373 PLAISIR Cedex 

France 

Phone : +33 61 34 23 23 

FAX : + 33 1 61 34 21 13

ZODIAC AEROSPACE SERVICES ASIA 

36, Loyang Drive 

SINGAPORE 508949 

Phone : +65 6579 2230 

Fax : +65 6579 2231 

AMERICAS 

ZODIAC AEROSPACE SERVICES AMERICAS

W175 N5737 Technology Drive 

MENOMONEE FALLS, WI 53051 

USA 

Phone : +1 262 293 1000 

FAX : +1 262 293 1010 

Web site: www.zodiacaerospace.com 
ZODIAC AEROTECHNICS SENSING SYSTEMS 

Date: MAR 24/14 SERVICE BULLETIN: 766983-28-002

Revision No. 1 Page: 20/20

APPENDIX I 

This Service Bulletin applies to fuel probes produced from June 2011 to August 2013, not identified 

with letter “C” in the control box of the identification plate, and listed as follows: 

Aircraft Equipment PNR First S/Ns Last S/Ns 

42 766-046-2 1046 1083 

42 766-047-2 1154 1214 

42 766-048-2 1150 1197 

42 768-055 1156 1227 

42 798-038 1150 1238 

72 766-793-1 1469 1826 

72 766-795-2 1661 2093 

72 766-796-2 1722 2152 

72 766-797-2 1663 2051 

72 766-983-1 2200 2652 

72 768-100 1511 1876