### ADVANC ED AIRCRA FT EX TIN GUI S HERS 105.2 S\V Luttrell Blue**Spring~.** I\10 64 0 15 

### USA Telephone: (81 6) 22 8
-3322



### em ai

### 1:

### =-c"'"··""""·'·'"---·'-'-"''--~-'--'-'-'--' www.aae- hd.com 

# SERVICE BULLETIN- TFAl0-26-0020 Installation of AAE Cargo Fire Protection System (FPS} Placards and Suppression Harnesses on the 8737-400 series aircraft equipped with the AAE FPS Kit Configuration 8737-400{-1400}
Revision · Issue Date Approved By 1

### R

### ________________**+i_ Ja** **nu_a_ry~1_2~,2_0_1_5**

### __________**~~~ ~=------~** 

-- - ----'----

____ .J...........

___ _____ _] • Changes to this Service Bulleti n are indicated by a bar in the left hand margin.

Service Bulletin TFAl0-26-0020 Revision IR Page 1 of 17

### SAFETY INTENT This Service Bulletin identifies a possible " unsafe " condition when the AAE Cargo Fire Protection System Placards identifying Extinguisher Bottle 1 and Bottle 2, and their respective electrical Pressu re Switch and Squib Harnesses at the Suppression Rack, were in stalled on the 8737-400 series aircraft. Upon review of AAE Installation Drawings TFC07-0062Q, " Class C Cargo Comp. FPS Placard Location Instructions", Sheets 5, 6, and 7, it was found that, the callouts for the following placards are shown in the wrong locations.

- BOM Item No. -220 "BTL 1 Cargo Suppression", P/N TFC05-0044-36 is shown to be installed on BTL 2

- BOM Item No . -223 "BTL 1 Pressure Switch", P/N TFC05-0044-39 is shown to be installed on BTL 2

- BOM Item No . -225 "BTL 1 Squib", P/N TFCOS-0044-41 is shown to be installed on BTL 2 And

- BOM Item No . -221 "BTL2 Cargo Suppress ion ", P/N TFCOS-0044-37 is shown to be installed on BTL 1

- BOM Item No. -224 " BTL 2 Pressure Switch " , P/N TFCOS -0044-40 is shown to be installed on BTL 1

- BOM Item No . -226 " BTL 2 Squib", P/N TFCOS-0044-42 is shown to be installed on BTL 1 Further, if it is verified that the placards were installed i ncorrectly, this may have resulted in the BTL 1 and BTL 2 Suppression Harnesses being mated to the Pressure Switch and Squib on the wrong extinguisher bottle, decreasing the ability of the AAE FPS Suppression System to provide enough extinguishing agent to put out a f i re and keep it suppressed for the required duration of protection . This Service Bulletin is intended to resolve the unsafe condition by providing the operator/maintenance personnel with step-by-step instructions on how to (1) inspect the AAE Cargo FPS Placards and Suppression Harnesses at the Suppression Rack Assembly to determine if they are installed co rrectly; and if they are not, (2) re-install new placards and suppression harnesses in a manner that will eliminate the current unsafe condition and remove the possibil ity of it reoccurring during future scheduled maintenance. To accomp l ish this, it's important to understand that the 1 51 

### Ext i nguisher Bottle (BTL 1) of the AAE Ca rgo FPS always provides a "High-Rate Knockdown " agent discharge. And the 2 nd 

### Extinguisher Bottle (BTL 2) of the AAE Cargo FPS always provides a "Metered " discharge of agent to sustain the concentration of agent in the compartment for the required duration of protection. To help the installer/maintenance personnel understand, below is a photo ofthe "Auto-Fire" Cargo FPS Control Panel, P/N TFC12-0077-1, along with a d iagram of the suppression rack installation for the 8737-400 equipped with AAE A/C Configuration (-1400). Note BTL 2, regardless of its location, is 

### always the container that is connected to the metering device.

Service Bulletin TFAl0-26-00ZO Revision IR Page Z of 17LO OP DET. & F AIL LED ' s ( AM BER) AAE "Auto- Fire" Control Panel, P/N TFC12-0077-1 For B737-400 aircraft that are equipped with AAE A/C Configuration (-1400) 8 CARG O

# DE**T......_EC.:- ---..** **t-.! ~** **~@) ·**  ..

# I. SUPPRESS IO N AUTO/M AN 

### II

F

I R£ W A

R

NING LED (RED)

0 Pushing this "DSCH" switch (left side) fires the "Knock-down" discharge from BTL 1

0 0 

# -- -· This "AUTO/MAN DSCH" switch (right side) automatically fires the "Metered" discharge from BTL 2 after 5 minutes



# \
F-' L-"· : ,:.p n LOC;Th) l l':. - •;I I PP F ·E•:;-:; h :•ll

### ·~**ST I.** **I** 

# iI**;** 

### ., J==:=:3' 

## rrl, \

# ~ SQUIB LED's (G REEN) (TYP. 4 PL CS .)

I 

### I 

# D 0

AAE Cargo FPS Suppression Rack Installation (View looking AFT) For B737-400 aircraft that are equipped with AAE A/C Configuration (-1400) (Section shown above is from AAE Installation drawing TFC07-0062Q, Sheet 7, Rev . A dated 12/05/14) Service Bulletin TFAl0 -26-0020 Revision IR Page 3 of 17

### ACRONYMS AD- Airworthiness Directive CT- Critical Task(s) DAH- Design Approval Holder FAA- Federal Aviation Administration FPS- Cargo Fire Protection System RC- Required for Compl iance SB· Service Bulletin STC - Supplemental Type Certificate TC- Type Certificate 

### DEFINITIONS Required for Compliance (RC)- Notates which steps in this SB must be done for compliance with an AD. Steps with the "RC" notation have a direct effect on detecting, preventing, resolving, or eliminating the unsafe condition identified above. 

### NOTES 1. Some steps in the "SERVICE BULLETIN IN STRUCTIONS " section ofthis SB are identified as 

### Required for Compliance (RC). Such steps are preceded with a notation "RC" and are determined to be 

### critical tasks that have a direct effect on detecting, preventing, resolving, or eliminating the unsafe condition identified by this SB. lfthis SB is mandated by an airworthiness directive (AD), the steps identified as RC must be done to comply with the AD. Steps not identified with RC are recommended and may be deviated from; done as a part of other actions; or done with accepted methods different from those given in this SB, if the RC steps can be done, and the airplane returned to a serviceable condition. 2. This SB includes instructions that refer to steps, methods, techniques, and practices described in other AAE, LTD documents. When the words "refer to" are used and there are other acceptable methods, techniques, and practices (including tools, equipment, and test equipment) those acceptable methods, techniques, practices (including tools, equipment, and test equipment) may be used to complete the work . When the words "in accordance with" are used, the steps, methods, techniques, and practices (including tools, equipment, and test equipment) in the AAE, Ltd document must be used ." 3. The AAE Kit Part Numbers/serial numbers identified in the "EFFECTIVITY" section of this SB were purchased and intended for installation on the specific 

### 8737-400 aircraft serial numbers shown . However, it's possible that the AAE Kit was actually installed on another 

### 8737-400 aircraft that has a different aircraft serial number that is not shown. This Service Bulletin is effective, and compliance is required, for all 

### 8737-400 aircraft that are equipped with the AAE Kit Serial Numbers shown in the "EFFECTIVITY" section of this 58 regardless of what aircraft serial number they were actually installed on, except for those aircraft that have been scrapped.
Service Bulletin TFA10 ·26-0020 Revision IR Page 4 of 17! ; i

' 

# I COMPliANCE For "active" aircraft, this (SB) shall be performed as soon as possible during the next scheduled ma in tenance stop but no later than 30 days. For "Inactive" aircraft, this (SB) shall be performed before the aircraft is returned to service. For aircraft that have been scrapped, only Section F of this SB is app licable. 

### APPROVAL The technical content of this Service Bulleti n that affects the AAE Cargo FPS type design is FAA approved. 

### EFFECTIVITY The following AAE Cargo FPS Kits may be affected**---·-········---~** 

# -- 

# I

'""hmd B>l 

## I Purchased for AAE,LTD AAE ALC AAE Kit Part Number 

### LK it 

## I Installation on Status 12[12[14 Qe r FAA Configuration Seri al Number[Work Date[Purchase Order Aircraft Serial " www .Airfleets.net" STC Number Order No. Number ffi!mber

.........._.

# __ ST01114WI -1400 TFK B737 ·400- 1400 AEFGH Aersale, I nc. 

### I March 2011 25417 

## I I nactive -Stored ' 

### I 352 

### I 030111 - P2 

### I P.O. 10005335 

## i

- ST01114WI 

### i

- 1400 TFK 8737-400-1400 AEFGH Aersale, Inc. 

### I March 2011 j 27149 Active . Ope rated by ST01114WI --1 -1400
--- 

### I 298 

### I 030111-Pl 

### I P.O. 10005335 I Xtra Airways ! i**···-····-····-·~.....,.·-·** I TFK 8737-400-1400 AEFGH AirCastle Advisor LLC 

### I 

## i 27003 ! Inactive- Stored I 

### I 355 

### I 060811-Pl June 20111 P.O
. 1148-0- 

# I October 2014 TECHI2011 

### ' i ST01114WI -1400 TFK 8737-400-1400 AE FGH Aviation C apital Group 

### I l 28661 

## I Active. Operated by 

### I 254 

### I 020707-Pl February 2007 

### I P.O. 

## i Gading S ari Aviation 28661RyanCSFD-1 

## ! Services**·-· ~·-**  S T01114wl l -1400---· TFK 8737-400-1400 AEFGH 

# I Boe i ng Capital

### c~~p~~ation 24132 

## I Active. Operated by 

# I I 215 

### I 110405-P1 1 

### I November 2005 

### I P.O. , 

## I Peru vian Airlines. 

### i 24132-DEL-003 

### J I ST01114Wl ,-1400 TFK 8737-400-1400 AEFGH Castle 2003 lA LLC 

### I August 1 25375 

### i Active. Op erated by 

### I 318 

### I 080609-Pl 2009 

### I P.O
. 2801 

# l I Rio Li nhas Aereas 

# I

.. _..!
__,...,, ST01114WI 

## ! -1400 

### i TFK 8737-400-1400 AEFGH ! Castle 2003 lA LLC 

### I May 26281 

### I Active. Operated by 

# IST01114WI i 

# i I 356 

### I 050911-P2 I 2011 

### I P.O. 4392

### ~ Sriwijaya Air 

## I I 1· 1400 1 TFK B737-4oo-1 4cicl"AEFGH -- GECAS- US, ACS of Spain 

### I 1 23865 ' Active- Freighter 1 

### I 291 

### I 100807-P1 October 2007 

### I P.O
. ! ; 

# IST01114WI I i

- 1400 

## I TFK 8737-400-1400 AEFGH t 

### I 333 

### I 061510-Pl ! ST01114WI 

### i -1400 

## I TFK 8737-400-1400 AEFGH 

## I I I 313 

### I 050209 · P1 i I ·-**'"'"~"'''-n·m.,..,.,_,,;,...."w'** < 

# l ST01114WI - 1400 

## I TFK 8737-400-1400 AEFGH 

## I I 317 

### I 071609-Pl ! l848097 

### i GECAS- US, ACS of Spa in 

### I 28881 I Active - F reighter 1 June 2010 

### I P.O
. L866410 

# I

MacQuarie AirFinance 

### I I 24474 

## I Active. Operated by I June 2009 

### I P.O
. 3055-0- ! Cargo Air 1950 i**•••••••••--····~··-•••<•-oNOo-••-•·-··-·--~·** • ....**,.,.~** .... Sky King Inc. 

### I July 2009 

### I P.O. 15290 I I 24706 , Ina ct ive- Stored. Sky J King. Leased from I 1 ILFC Service Bulletin TFAl0-26-0020 Revis ion IR Page 5 of 17

### INSTALLATION DRAWINGS AND DOCUMENTS Th is Service Bull etin includes th e fo l low in g AAE in stallation draw ings and data . Supplement Type Certificate STC No . ST01114WI AAE Drawi ng TFA10-0061, Mast er Draw ing List, Revisio n U*, dated 12/05/14 for STC No . ST01114WI AAE Drawing TFC07-0073, Bill of Materials , Revision D*, dated 07/27/11 for STC No. ST01114WI AAE Installation Drawing TFC07 -0062Q, Class CCargo Comp
. FPS Placard Location Instructions, Sheet 7, Revision A dated 12/05/14 * AAE Installation Drawing TFC07-0062N, Class C Cargo Camp. FPS Tubing/Wiring Suppression Rack Install. Instructions, Sheet 9, Revision IR dated 07/05/05 

## * AAE Installation Drawing TFC03-0252, System Diagram Fire Suppression 8737, Sheet 1, Revision IR dated 04/01/03 

## * AAE System Ma i ntenance Manual TFC18-0207, Rev. IR, dated 11/25/09 Chapter 26-23-00 

## * (" Or Later FAA approved revis ion) Please contact AAE to obtain copies of the above data if needed. 

### AAE PARTS, MATERIALS, AND TEST EQUIPMENT This Service Bulletin includes the following AAE parts, materials, and test equipment. Qty 1 of BOM Item No. -220 Placard, "BTL 1 Cargo Suppression" , P/N TFC05-0044-36 Qty 1 of BOM Item No. -223 Placard, "BTL 1 Pressure Switch", P/N TFCOS-0044-39 Qty 1 of BOM Item No. -225 Placard, "BTL 1 Squib", P/N TFCOS-0044-41 Qty 1 of BOM Item No. -221 Placard, "BTL 2 Cargo Suppression", P/N TFC05-0044-37 Qty 1 of BOM Item No . -224 Placard, "BTL 2 Pressure Switch", P/N TFCOS-0044-40 Qty 1 of BOM Item No. -226 Placard, "BTL 2 Squib " , P/N TFCOS-0044 -42 Qty 1 of BTL 2 Extension Harness Assembly Qty 2 of Heat Shrink P/N FIT221 -1-1/2(CLR) Qty 4 of Terminal, Ring #10 P/N 36154 Qty 4 of End Caps, P/N MS25274-2 Please contact AAE to obtain the above parts if they are m issing . If not already in your invento ry, contact AAE, Ltd to obtain Squib Tester, P/N TFC20-0003-2. Availability is 3-5 days ARO. You r orde r shou ld be submitted by ema il to sales@aae-ltd.com or aaeltd@ co mpuse rve.co m ; or by fax at 816-228-4191 . The BTL 2 Extension Harness Assemb ly included w it h t he SB was built by AAE using t he materia ls, notes , and specifications shown i n Appendix 1 .

Service Bulletin TFAl0-26·0020 Revision IR Page 6 of 17

### SERVICE BULlETIN INSTRUCTIONS A. Gain access to the aircraft and the AAE Cargo FPS Suppression Rack Assembly located at F.S
.540 between LBL 32.47 and RBL 27.55. (1) Location Zones Flight Compartment- Left Flight Compartment- Right Forward Cargo Compartment (2) Access Panels 4404R, Forward Cargo Compartment (3) Open the forward cargo door, 4404R. {4) Remove the bulkhead at the aft end of the forward cargo compartment to gain access to the fire suppression bottles. B. RC- Perform a detailed visual inspection of the AAE Cargo FPS Placards to verify they are the correct placards and that they are installed in the proper locations as follows: (1) At the AAE Cargo FPS Extinguisher Bottle, BTL 1, P/N TFC14-0039-1, located at F.S. 540 between LBL 24.97-LBL 6.25- Using AAE Drawing, Placard Location Instructions, TFC07- 0062Q, Sheet 7, Revision A dated 12/05/14, or later FAA approved revision 1. Visually inspect the placards installed on the AAE BTL 1 Suppression Mounting Plate P/N TFC06-0127-101 (BOM Item 692). Verify they are the following placards and that they are installed in the locations on the mounting plate in accordance with this AAE Drawing. I. BOM Item No. -220 Placard, "BTL 1 Cargo Suppression", P/N TFC05-0044-36 2. BOM Item No. -223 Placard, "M9404 BTL 1 Pressure Switch", P/N TFCOS0044-39 3. BOM Item No. -225 Placard, "M9404 BTL 1 Squib", P/N TFC05-0044-41 if

### they ARE the correct placards and they are installed in accordance with the AAE Drawing, proceed to Step B (2) ofthis 

### 58. If they ARE NOT the correct placards or theyARE NOTinstalled in accordance with the AAE Drawing, accomplish Steps B (1ii) and 8 (1iii} below.
11. Remove the existing AAE Cargo FPS Placards (i.e. BOM Item No . -221, -224, and226) from the mounti ng plate P/N TFC06-0127-101 (BOM Item 692) and destroy/discard them .
Service Bulletin TFAl0 -26-0020 Revision IR Page 7 of 17

### SERVICE BULLETIN INSTRUCTIONS (Cont.)
111. Install the following AAE provided Cargo FPS Placards on the Mounting Plate, P/N TFC06-0127-101 in accordance with the AAE Drawing, Placard Location Instructions, TFC07-0062Q Sheet 7, Revision A dated 12/05/14 or later FAA approved revision . 

### l. BOM Item No. -220 Placard, "BTL 1 Cargo Suppression" , P/N TFCOS-0044-36 2. BOM Item No . -223 Placard, "M9404 BTL 1 Pressure Switch" , P/N TFCOS0044-39 

### 3. BOM Item No. -225 Placard, "M9404 BTL 1 Squib", P/N TFCOS-0044-41


### n ·. Proceed to Step B (2) (2) At the AAE Cargo FPS Extinguisher Bottle, BTL 2, P/N TFC14-0051-1, located at F.S. 540 between RBL 12.8-RBL 27.55- Using AAE Drawing, Placard Location Instructions, TFC07- 0062Q Sheet 7, Revision A dated 12/05/14, or later FAA approved revision 1. Visually inspect the placards installed on the AAE 

### BTL 2 Suppression Mounting Plate P/N TFC06-0152-101 {BOM Item 290) . Verify they are the following placards and that they are installed in the locations on the mounting plate in accordance with this AAE Drawing. 

### 1. BOM Item No. -221 Placard, "BTL2 Cargo Suppression", P/N TFCOS-0044-37 

### 2. BOM Item No. -224 Placard, "M9405 BTL 2 Pressure Switch", P/N TFC05- 0044-40 3. BOM Item No. -226 Placard, "M9405 BTL 2 Squib", P/N TFCOS-0044-42 

### Ifthey ARE the correctplacards and they are installed in accordance with the AAE Drawing, proceed to Step C ofthis 58. Ifthey ARE NOT the correct placards or theyARE NOTinstalfed in accordance with the AAE Drawing, accomplish Steps B (2U} and 8 (2iii) below. 11. Remove the existing AAE Cargo FPS Placards (i.e. BOM Item No. -220, -223, and - 225) from the mounting plate P/N TFCOG-0152-101 {BOM Item 290) and destroy/discard them.
111. Insta ll the following AAE provided Cargo FPS Placards on the Mounting Plate, P/N TFCOG-0152-101 in accordance with the AAE Drawi ng, Placard location Instructions, TFC07-0062Q Sheet 7, Revision A dated 12/05/14 or later FAA approved revis ion . 

### 1 . BOM Item No . -221 Placard, "BTL 2 Cargo Suppression", P/N TFC05-0044-37 2 . BOM Item No . -224 Placard, " M9405 BTL 2 Pressure Switch", P/N TFC05- 0044-40 3. BOM Item No. -226 Placard, "M9405 BTL 2 Squib ", P/N TFC05-0044-42 n ·. Proceed to Step C of this 58

Service Bulletin TFAl0-26 -0020 Revision IR Page 8 of 17

### SERVICE BULLETIN INSTRUCTIONS (Cont.) C. 

### RC- Perform a detailed visual inspection of the AAE Cargo FPS Suppression Harnesses to verify proper Harness Installation of Extinguisher Bottle's Pressure Switch Harnesses and Squib Harnesses using AAE System Diagram, TFC03-0252, Sheet 1 at Revision IR dated 04/01/03, or later FAA approved revision and AAE Insta llation Drawing TFC07-0062N, Class C Cargo Comp. FPS Tubing/Wiring Suppression Rack Install. Instructions, Sheet 9 Revision IR dated 07/05/05 or later FAA approved revisions as follows: (3) At the AAE Cargo FPS Extinguisher Bottle, BTL 1, P/N TFC14-0039-1. installed on Suppression Mounting Plate P/N TFC06-0127-101, between LBL 24.97-LBL 6.25-
1. Inspect the electrical harness connected to the bottles pressure switch and 

### I. Verify it is marked (D9495) ''BTL 1 Pressure Switch Harness P/N TFC03-0255- 103" and, 2. Verify it is mated to BTL 1's pressure switch connector. u. Inspect the electrical harness connected to the bottles squib and 

### l. Verify it is marked (D9494) "BTL 1 Squib Harness P/N TFC03-0255-102" and, 2. Verify it is mated to BTL 1's squib connector. 

### IftheyARE the correct harnesses and they are installed in accordance with the AAE Drawing, proceed to Step 4 ofthis SB as applicable to theAAEA/C Configuration installed on your aircraft. IftheyARE NOT the correct harnesses or theyARE NOT installed in accordance with the AAE Drawing, proceed to Step 4 ofthis 58 as applicable to the AAEA/C Configuration installed on your aircraft. (4) At the AAE Cargo FPS Extinguisher Bottle, BTL 2, P/N TFC14-0051-l, installed on Suppression Mounting Plate P/N TFC06-0152-101 , between RBL 12.8- RBL 27.55-
1. Inspect the electrical harness connected to the bottles pressure switch and I. Verify it is marked (09496) "BTL 2 Pressure Switch Harness P/N TFC03-0255- 105" and, ? Verify it is mated to BTL 2's pressure switch connector. n . Inspect the electrical harness mated to the bottles squib and I . Verify it is marked (09497) ''BTL 2 Squib Harness P/N TFC03-0255-104" and , 2. Verify it is mated to BTL 2' s squib connector . 

### IftheyARE the correct harnesses and they are installed in accordance with the AAE Drawing, proceed to Step Eofthis SB as applicable to the AAEA/C Configuration installed on your aircraft. . IftheyARE NOT the correct harnesses or theyARE NOT installed in accordance with the AAE Drawing, accomplish Steps C(5) thru (11) ofthis SB. Service Bulletin TFAl0-26-0020 Revision IR Page 9 of 17

### SERVICE BULLETIN INSTRUCTIONS (Cont.) (5) At the P6-2 Panel located behind the Flight Officer's chair, locate the Cargo FPS circuit breakers "CARGO SMOKE DETECTORS- A LOOP", "CARGO SMOKE DETECTORS- B LOOP", AND "CARGO SMOKE CONTROL/FAULT PNLS", "OPEN" them, and install a "DO NOT CLOSE" tag to prevent accidental discharge of the bottles and diverter valve . (6) Disconnect (D9496) "BTL 2 Pressure Switch Harness, P/N TFC03-0255-105" from BTL l's Pressure Switch and remove D9496 ground wires (W9448-001-20 and W9448-002-20) from ground studs (GD9184-DC and GD9185-S) (7) Disconnect (D9497) "BTL 2 Squib Harness, P/N TFC03-0255-104" from BTL l's Squib and remove D9497 ground wires (W9449-001-20 and W9449-002-20) from ground studs (GD9182-DC and GD9183-S). (8) Remove the ring terminals from the BTL 2 Harness ground w i res P/N W9448-001-20, W9448-002-20, W9449-001-20, and W9449-002-20; and install End Caps, P/N MS25274-2. (9) Disconnect (D9495) "BTL 1 Pressure Switch Harness, P/N TFC03-0255-103" from BTL 2's Pressure Switch and remove D9495 ground wires (W9447-001-20 and W9447-002-20) from ground studs (GD9184-DC and GD9185-S). (10) Disconnect (09494) "BTL 1 Squib Harness, P/N TFC03-0255-102" from BTL 2's Squib and remove 09494 ground wires (W9446-001-20 and W9446-002-20) from ground studs (GD9181-DC and GD9183-S). (11) Using AAE Installation Drawing, TFC07-0062N, Class C Cargo Camp. FPS Tubing/Wiring Suppression Rack Install. Instructions, Sheet 9, Revision IR dated 07/05/05 or later approved revisions, 1. Re-route the BTL 2's Harnesses, (09496) "BTL 2 Pressure Switch, P/N TFC03-0255- 105" and (D9497) "BTL 2 Squib, P/N TFC03-0255-104" to the BTL 2 Extinguisher Container
. 

### **DO NOT MAKE CONNECTIONS YET**. l. If the existing harness is now too short to reach the BTL 2's connectors, then AAE has included a "BTL 2 Extension Harness" with this SB that can be connected to the existing BTL 2 Pressu re Switch and Squib Harnesses as follows: a. The end of the extens ion harness, without the ground wires, is the end that will mate to the existing BTL 2 Pressure Switch and Squib Harnesses. The other end of the extension harness, with the ground wires, is the end that will mate to BTL 2's Extinguisher Container. See Appendix l's Figure 1 for more details .
Service Bulletin TFAl0-26-0020 Revision IR Page 10 of 17

## SERVICE BUllETIN INSTRUCTIONS {Cont.} b. Slide Qty (1) 4 " piece ofthe included heat shrink FIT221-1-1/2(CLR) over each connector at the end of the harness that will be mated to the existing harness (end without the ground wires). c. Mate the existing harnesses con ne ctor (D9496) " BTL2 Pressure Switch , TFC03-0255-105" to the same connector on the BTL2 Extension Harness (D9496) "BTL 2 Pressure Switch, TFC03-0255- 105''. Position the heat shrink over the new connection and apply heat until the material firmly seals the new connection. d. Mate the existing harnesses connector (D9497) 11 

### BTL2 Squib, TFC03- 0255-104" to the same connector on the BTL 2 Extension Harness (D9497) "BTL2 Squib, TFC03-0255-104"
. Position the heat shrink over the new connection and apply heat until the material firmly seals the new connection.
11. 

### At the end of the BTL 2 Extension Harness are two sets of ground wires {W9448- 001-20/ W9448-002-20 and W9449-001-20/W9449-002-20). See Appendix 1's Figure 1 for more details . Connect ring terminals, P/N 36154 to the ends of these ground wires . Route these ground wires to the existing ground studs and connect them as follows: a. D9496 ground wire (W9448-001-20) to ground stud G09184-0C b. 09496 ground wire (W9448-002-20) to ground stud G09185-S c. 09497 ground wire (W9449-001-20) to ground stud G09182-0C d. 09497 ground wire (W9449-002-20) to ground stud G09183-S
111. 

### Re-route BTLl's Harnesses (D9495) "BTL 1 Pressure Switch, P/N TFC03-0255-103" and (09494) "BTL1 Squib, P/N TFC03-0255-102" to the BTLl Extinguisher Container
. **DO NOT MAKE CONNECTIONS YET**. 

### tv. Route BTL 1's Harnesses ground wires to the existing ground studs and connect them as follows: a. 09495 ground wire (W9447-001-20) to ground stud G09184-0C b. 09495 ground wire (W9447-002-20) to ground stud G09185-S c. 09494 ground wire (W9446-001-20) to ground stud G09181-DC d. 09494 ground wire (W9446-002-20) to ground stud G09183-S v Mate BTll's Harness (09495) "BTL 1 Pressure Switch, P/N TFC03-0255-103" to BTL l's pressure switch connector. ** DO NOT CONNECT BTL 1's Squib Harness at this time. \ ' 1. 

### Mate BTL 2's Harness (09496) "BTL 2 Pressure Switch, P/N TFC03 -0255-105" to BTL 2's pressure switch connector. **DO NOT CONNECT BTL 2's Squib Harness at this time.

Service Bulletin TFA10-26-0020 Revision IR Page 11 of 17

### SERVICE BULLETIN INSTRUCTIONS (Cont.} \·ii. Secure all wire harnesses and ground wires. IMPORTANT- harnesses should be secured in a manner that prevents them from accidenta l ly being connected to the incorrect bottle during future maintenance. vn1. Perform a Squib Circuit Test in accordance with Appendix 2 of this Service Bulletin.

JX. Perform a Pressure Switch Test in accordance with Appendix 2 of this Service Bulletin. x. If the Squib Circuit and Pressure Switch tests are successful, proceed to Step D of this SB xi. If the Squib Circuit and Pressure Switch tests fail, contact AAE LTD at 816-228-3322 for assistance. D. Return the airplane to its original condition. (12) Open the CARGO SMOKE CONTROL/FAULT PNLS circuit breaker and install a DO-NOTCLOSE tag. (13) Disconnect the squib connectors from the squib tester (14) Mate BTL 1's Harness (09494) "BTL 1 Squib, P/N TFC03-0255-102" to BTL 1's Squib connector. (15) Mate BTL 2's Harness (D9497) "BTL 2 Squib, P/N TFC03-0255-104" to BTL 2's Squib connector. (16) Reinstall the cargo compartment bulkhead and seal all seams with approved fire-proof tape . (17) Remove the "DO-NOT-CLOSE" tag and close the CARGO SMOKE CONTROL/FAULT PNLS ci rcuit breaker. {18) Set aircraft power as necessary. (19) Proceed to Step E ofthis SB

Service Bulletin TFAl0-26-0020 Revision IR Page 12 of 17

### SERVICE BULLETIN INSTRUCTIONS (Cont.) E. 

### RC- Make an entry in the affected aircrafts permanent ma i ntena n ce records that th is Service Bu lletin was accomplished, including the date, location, and organization. F. Complete the information below for the affected aircraft and send a copy ofthis SB to AAE LTD at P.O
. Box 1117, Blue Springs, MO. 64013-1117. 

### Aircraft Model Number 

# IAircraft Seriaf"" - Number AAE Kit Part Number 

# lAAE Kit Serial Number 

## I

-'---·· -- ·········- -·"··-- This Service Bulletin WAS accomplished on the aircraft specified above 

### by: [

## Na~~**.......** .. 

# I**Addre~~** ____..___

## -----**-~ r**  Phone

## ----·----------~1**··- ~_il** ____

# -·=1

This Service Bulletin WAS NOT accomplished on the aircraft specified above because the aircraft has been "Scrapped" by: [

_

N

_

a

_ m

_

e

_______________

### .~**A_d_d re_s** **s**___

### ~·:=**==-----_[ Ph.~6~** **...... --** **-~ Email** **·----~**

# ---**----=----- --**  

# ..... . . . L....**---- ---'** **-- =~-·** 

# _ ___J Name: _______________________ _ (Printed) S

ignatu re: _________ _ Date: ____________ _

Service Bulletin TFAl0-26-0020 Revision IR Page 13 of 17APPENDIX

1 BTL2 EXTENSION HARNESS BUILD-UP, NOTES, MATERIAL LIST, WIRES AND LABELS **®~~L:~•m> ~~**  ,.,.,_,. **~**
. ... , 0\ 1 n **~~**

- -- **~ ~111** 

, !') **~**
.l r' I Figure 1. Bottle
2 Extension Harness o Numbers outlined with a T r iangle correspond to the "Notes" section on Page 15

U.W1 ..... oa::r-- N- .-< 0 1:- 0 0 0 th ·v; -:7 N ·- .-< • > 0 Q,J QJ .... a: bO <( 111 u. a..tc ·.;::; **~** :::> [Q <U u ·;:;; ... QJ VlAPPENDIX 1 (Cont.) BTL2 EXT ENSION HARN E SS BUILD- UP. NOTES
. MATERIAL LI ST, WIRE S AND LABELS A p pen d ix 1 , Fig u re 1 Not es : L Bag Harness and label bag 2 . Using the cut and marked wires identified in the appropriate list shown in Table 1 below, assemble the harnesses as shown. Terminate the wires in the connector; per Table 1 below. For wires and parts that are not terminated at time of build up (Loose Parts), bag these items separately and attach bags by the connector on the harness assembly. These loose parts will be installed at time of i nstallation . 3. Identify harness with heat shrink label item No . 12 at connector ends per Table 2 below. Use 10 or 12 point Helvetica font, bla ck letters on heat shrink label Item No. 12. 4 . Bag and label loose parts by part number. 5. Pe rform a complete continuity test of wire terminations as shown b\' the wire list specified in Table 1 below . Verify each wire is electrically isolated (I.e . no continuity) from all the other wires in the assembly. 6. Install supplied heat shrink, P/N FIT221-1-1/2(CLR), qty 2, over the Bottle 2 Extension Harness connectors that attach to Bottl e 2 Harness. Apply heat to shrink around connectors. 7. Protect connector from contamination during sh ipping and handling (dust caps preferred) .

Bottle 2 Extension Harness Material List Item No. Description Part No. or Identifying No. Qty Req'd 1 Connector (09497) 2 Backshell, Size 10, RT 3 Connector (09496) 4 Backshell, Size 10, RT 5 Connector (09497) 6 Backshell, St raight 7 Connector (09496) 8 Backshell, Straight 9 lacing Cord (Type V, Sz 2, Finish C 10 Wire, 1 Cond. 20 AWG 11 Terminal, Ring 1110 12 Heat Shrink, 1/8" Labe l (2 inch) 13 Terminal, Ring #6 14 Heat Shrink, 11/2", Clr (4 inch) MS24266R10BSSN GTR21-10CO M83723/86R1005N M85049/51-1 - 10N M24264R10BSPN MS27291-1 M83723/85R1005N M85049/52-1·10N MIL-T73735B MIL-W-22759/16-20-9 36154 98 -WT31·0342 36152 FIT221-l-1/2(CLR) 1 1 1 1 1 1 1 1 As Req 'd per Table 1 4 13 1 2

Service Bullet in TFA1 0-26-0020 R

evisio n IR Page 15 of 17Item No.

2 3 4 5 6 

### APPENDIX 1 (Cont.) BTL 2 EXTENSION HARNESS BUILD-UP, NOTES, MATER IA L LIST, WIRES AND LABELS Table 

### 1. Wire List V"llre W ire len gt h Ter mination Wire Number**V\'ir~** Type Co lo r (Inches) From Pi n Code**W9432 03~·20**  tJl IL-W- 22 75 9/16-20-9 White v**~"** 09497 T W9432 050-20 Mll -W-22759/16-20-9 VVhit.Q 36 09496 T W9443-00 1 -20 M I L -W'- 22759/ 16-20-9 White 84 09496 W9448-002-20 MIL· W -22759/ lG -20-9 \:Vhite 84 09496 Backshell T W9449-001-20 M IL-W ·22 75 9/ 16-20 ·9 \:Vhit e 84 09497 T**W9~49 002-20**  MIL-W-22759/16 -20-9 White 84 D9497 3 T

Table 2. Labels
Label Btl 2 Extension Har ness Bottle 2 Sq uib TFC03 -0255·1 04 Bottle 2 Pressure S witch TFC03-0255- 104 D9496 09497 To 09497 09496 GD9184- DC GD91S5 -S GD9182 -DC GD91.83 -S

Qty Req'd

1 2 2 2 2 P in

2 Termina tion Code Funct ion Wire Style Sing le T Bottl e 2 Squib Conduc<or Bottl e 2 Pressure Single T Switch Cor1ductor Press. Sw Bt l 2 S inr, le u GD- DC Conductor Press. Sw Btl 2 Singl e 

### u GDS Conductor Squ ib Btl 2 GD· Single u DC Condt•ctor Single u Squi b Btl 2 GD · S Conductor

Service Bulletin TFAl0-26·0020 Revision IR Page 16 of 17APPENDIX 2 PROCEDURES TO COMPLETE A SQUIB CIRCUIT TEST AND PRESSURE SWITCH TEST ON BTll AND BTL2 To accomplish a "Squib Circuit Test" - Refer to AAE System Ma intenance Manual , TFA18-0207, Chapter 26-23-00, Fire Suppress ion System- Adjustment/Test, Code 6, Page 501, Revision IR dated 11/25/09, or later FAA approved revision, and complete Section 2. "Squib Circuit Test" To accomplish a "Pressure Switch Test" - Refer to AAE System Maintenance Manual, TFA18-0207, Chapter 26-23-00, Fire Suppression System- Adjustment/Test, Code 6, Page 

### 501, Revision IR dated 11/25/09, or later FAA approved revision, and complete Section 3. "Pressure Switch Test". NOTE: Some of the steps in the above test procedures have already been accomplished in earlier steps of this SB and are redundant . Or they are not necessary to complete as part of this SB
. The steps in the above test procedures are typical for a scheduled maintenance visit and assume access to the AAE Cargo FPS Suppression Rack and its components still need to be gained. Contact AAE, LTD for a current copy of TFA18-0207

Service Bulletin TFAl0-26-0020 Revision IR Page 17 of 17