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Citation SER VICE LETTER MANDA T OR Y SL560 - 26 - 02
REVISION
TRANSMITT AL This sheet transmits Revision 1 to SL560 - 26 - 02 which:
A.
Updated serialization.
B.
Updated the Reason statement.
C.
Changed the description to service letter from service bulletin.
D.
Changed step
4.
to remove the positive wires from the engine fire bottle squibs from inspect the fire bottle wiring.
E.
Changed step
5.
to inspect the fire bottle wiring from remove the positive wires from the engine fire bottle squibs.
F .
Added step
5.
to install yellow shrink sleeve.
G.
Changed step
6.
thru
16.
to refer to the Maintenance Manual for the Engine Fire Extinguisher Functional T est , renumbered steps.
H.
Changed step
6.C.
and
6.D.
to identify Y ellow ID sleeve legibility and installed.
I.
Added HS048YW1NF050B to the parts list.
NOTE:
This revision replaces SL560 - 26 - 02 in its entirety .
REVISION
COMPLIANCE EFFECT :
Airplanes that have previously complied with this document must inspect the fire bottle wiring per Step
6.
LOG OF
REVISIONS Original Issue July 8 , 2021 Revision 1 July 31 , 2024 Original Issue - July 8 , 2021 SL560 - 26 - 02 Revision 1 - July 31 , 2024 Page 1 of 1 T extron A viation Customer Service , P .O.
Box 7706 , Wichita , KS 67277 , U.S.A.
1 - 316 - 517 - 5800
COPYRIGHT © 2021
No text on this page: it may be a figure. Open the PDF to see it.
Citation SER VICE LETTER MANDA T OR Y SL560 - 26 - 02 TITLE FIRE
PROTECTION - FIRE BOTTLE WIRE
VERIFICA TION AND TEST
EFFECTIVITY MODEL SERIAL
NUMBERS 560 (Citation V) - 0001 thru - 0259 560 (Citation Ultra) - 0260 thru - 0538 560 (Citation Encore) - 0539 thru - 0707 560 (Citation Encore+) - 0751 thru - 0815 REASON The engine fire bottle cartridge positive and negative terminal studs are the same size.
It is possible to connect the wires to the wrong stud on the fire extinguisher cartridge and the wires may have been mislabeled.
Improperly connected wires will cause the circuit breaker to disengage (or pop) when you attempt to discharge the bottle(s).
DESCRIPTION This service letter provides instructions to inspect and test the wires to the fire bottle cartridges.
COMPLIANCE MANDA T OR Y .
This service document must be accomplished within 100 flight hours or 60 days from the date of receipt , whichever occurs first.
A service document published by T extron A viation may be recorded as completed in an aircraft log only when the following requirements are satisfied:
1) The mechanic must complete all of the instructions in the service document , including the intent therein.
2) The mechanic must correctly use and install all applicable parts supplied with the service document kit.
Only with written authorization from T extron A viation can substitute parts or rebuilt parts be used to replace new parts.
3) The mechanic or airplane owner must use the technical data in the service document only as approved and published.
4) The mechanic or airplane owner must apply the information in the service document only to aircraft serial numbers identified in the Effectivity section of the document.
5) The mechanic or airplane owner must use maintenance practices that are identified as acceptable standard practices in the aviation industry and governmental regulations.
No individual or corporate organization other than T extron A viation is authorized to make or apply any changes to a T extron A viation - issued service document or flight manual supplement without prior written consent from T extron A viation.
T extron A viation is not responsible for the quality of maintenance performed to comply with this document , unless the maintenance is accomplished at a T extron A viation - owned Service Center .
CONSUMABLE MA TERIAL No specialized consumable materials are required to complete this service document.
Original Issue - July 8 , 2021 SL560 - 26 - 02 Revision 1 - July 31 , 2024 Page 1 of 7 T extron A viation Customer Service , P .O.
Box 7706 , Wichita , KS 67277 , U.S.A.
1 - 316 - 517 - 5800 This document contains technical data and is subject to U.S.
export regulations.
This information has been exported from the United States in accordance with export administration regulations.
Diversion contrary to U.S.
law is prohibited.
ECCN:
9E991
COPYRIGHT © 2021
SL560 - 26 - 02 Page 2 Revision 1 - July 31 , 2024 Citation SER VICE LETTER MANDA T OR Y SL560 - 26 - 02 T OOLING NAME NUMBER MANUF
ACTURER USE Multimeter Commercially A vailable T o check for electrical voltage.
Electrical Shunt Locally Obtained T o shunt electrical voltage.
REFERENCES Citation Standard Practices Manual Cessna Model 560 Maintenance Manual Cessna Model 560 Encore Wiring Diagram Cessna Model 560 Encore Plus Wiring Diagram
PUBLICA TIONS
AFFECTED None
ACCOMPLISHMENT
INSTRUCTIONS
1.
Prepare the airplane for maintenance.
A.
Make sure that the airplane is electrically grounded.
B.
Make sure that all switches are in the OFF / NORM position.
C.
Disconnect electrical power from the airplane.
(1) Disconnect external electrical power .
(2) Disconnect the airplane battery .
D.
Attach maintenance warning tags to the battery and external power receptacle that have "DO NOT
CONNECT
ELECTRICAL POWER -
MAINTENANCE IN PROGRESS" written on them.
2.
Disengage the L F / W SHUT OFF and R F / W SHUT OFF circuit breakers on the left circuit breaker panel.
3.
Remove access panel 31 1AZ.
(Refer to the 560 Maintenance Manual , Chapter 6 , Access Plates and Panels Identification - Description and Operation.)
4.
Do the Engine Fire Extinguisher System Functional T est as follows:
W ARNING:
Immediately upon removal of wiring from fire bottle cartridge (squib) terminals , use jumper wires to connect cartridge terminals together to prevent accidental discharge of fire bottles.
NOTE:
When you do this test , BOTTLE 1 is the forward extinguisher bottle and BOTTLE 2 is the aft extinguisher bottle.
A.
(Refer to Figure 1 , Sheet
1.)
Disconnect the cartridge center post positive (POS +) wires from the fire extinguisher bottle cartridges on the list that follows:
• L1BOTL1 - NP209 (FWD)
• R1BOTL1 - PP209 (FWD)
• L1BOTL2 - KP208 (AFT)
• R1BOTL2 - PP208 (AFT) B.
Apply external power to the airplane.
C.
Engage the LH F / W SHUT OFF circuit breaker .
D.
Lift the switch guard , push and release the LH ENG FIRE switch / light (S37).
(1) Make sure that the BOTTLE 1 ARMED PUSH switch / light (S39) on the fire tray comes on.
Citation SER VICE LETTER MANDA T OR Y SL560 - 26 - 02 E.
Engage the RH F / W SHUT OFF circuit breaker .
(1) Make sure that the BOTTLE 2 ARMED PUSH switch / light (S38) on the fire tray comes on.
F .
Use a multimeter to make sure there is no voltage on the wires that follow:
• L1BOTL1 - NP209 (FWD)
• R1BOTL1 - PP209 (FWD)
• L1BOTL2 - KP208 (AFT)
• R1BOTL2 - PP208 (AFT) G.
Push and hold the BOTTLE 1 ARMED PUSH switch / light.
(1) Make sure that the BOTTLE 1 ARMED PUSH switch / light goes of
f.
(2) Make sure wire L1BOTL1 - NP209 reads (positive) +28 VDC while the switch / light is pushed.
H.
Release the white BOTTLE 1 ARMED PUSH switch / light.
I.
Push and hold the BOTTLE 2 ARMED PUSH switch / light.
(1) Make sure that the BOTTLE 2 ARMED PUSH switch / light goes of
f.
(2) Make sure wire L1BOTL2 - KP208 reads (positive) +28 VDC.
J.
Release the white BOTTLE 2 ARMED PUSH switch / light.
K.
Lift the switch guard , push and release the LH ENG FIRE switch / light (S37).
(1) Make sure that the F / W SHUT OFF LH annunciator goes of
f.
(2) Make sure that wires L1BOTL1 - NP209 and L1BOTL2 - KP208 have no voltage.
CAUTION:
If there is voltage , do not connect the wires to the fire bottle cartridges.
Do the troubleshooting procedure of the system to find the problem.
(Refer to the Model 560 Maintenance Manual , Chapter 26 , Extinguishing System - T roubleshooting.)
L.
Disengage the LH F / W SHUT OFF circuit breaker .
M.
Lift the switch guard , push and release the RH ENG FIRE switch / light (S36).
(1) Make sure that the BOTTLE 2 ARMED PUSH switch / light on the fire tray comes on.
N.
Engage the LH F / W SHUT OFF circuit breaker .
(1) Make sure that the BOTTLE 1 ARMED PUSH switch / light comes on.
O.
Use a multimeter to make sure there is no voltage on the wires that follow:
• L1BOTL2 - KP208 (AFT)
• R1BOTL2 - PP208 (AFT)
• L1BOTL1 - NP209 (FWD)
• R1BOTL1 - PP209 (FWD) CAUTION:
If there is voltage , do not connect the wires to the fire bottle cartridges.
Do the troubleshooting procedure of the system to find the problem.
(Refer to the Model 560 Maintenance Manual , Chapter 26 , Extinguishing System - T roubleshooting.)
P .
Push and hold the BOTTLE 1 ARMED PUSH switch / light.
(1) Make sure that the BOTTLE 1 ARMED PUSH switch / light goes of
f.
(2) Make sure wire R1BOTL1 - PP209 reads (positive) +28 VDC.
Q.
Release the white BOTTLE 1 ARMED PUSH switch / light.
R.
Push and hold the BOTTLE 2 ARMED PUSH switch / light.
(1) Make sure that the BOTTLE 2 ARMED PUSH switch / light goes of
f.
(2) Make sure wire R1BOTL2 - PP208 reads (positive) +28 VDC.
SL560 - 26 - 02 Revision 1 - July 31 , 2024 Page 3
SL560 - 26 - 02 Page 4 Revision 1 - July 31 , 2024 Citation SER VICE LETTER MANDA T OR Y SL560 - 26 - 02 S.
Release the white BOTTLE 2 ARMED PUSH switch / light.
T .
Lift the switch guard , push and release the RH ENG FIRE switch / light.
U.
Use a multimeter to make sure there is no voltage on the wires that follow:
• L1BOTL2 - KP208 (AFT)
• R1BOTL2 - PP208 (AFT)
• L1BOTL1 - NP209 (FWD)
• R1BOTL1 - PP209 (FWD) CAUTION:
If there is voltage , do not connect the wires to the fire bottle cartridges.
Do the troubleshooting procedure of the system to find the problem.
(Refer to the Model 560 Maintenance Manual , Chapter 26 , Extinguishing System - T roubleshooting.)
V .
Disengage the L F / W SHUT OFF and R F / W SHUT OFF circuit breakers on the left circuit breaker panel.
5.
Disconnect electrical power from the airplane.
A.
Disconnect external electrical power .
B.
Disconnect the airplane battery .
C.
Attach maintenance warning tags to the battery and external power receptacle that have "DO NOT
CONNECT
ELECTRICAL POWER -
MAINTENANCE IN PROGRESS" written on them.
6.
Inspect the fire bottle cartridge wire numbers and Y ellow ID Sleeves for proper identification.
(Refer to the Model 560 , 560 Encore or 560 Encore Plus , Wiring Diagram Manual , Chapter 26 , Fire Protection.)
NOTE:
The terminal lugs are the same size on the fire bottle squibs , it is possible to install the wires incorrectly leading to an unsafe condition where the fire bottle will not discharge.
This service letter is issued to verify proper fire bottle wiring and ensure the wires are correctly labeled.
CAUTION:
THE
CIRCUIT
BREAKERS MUST BE
DISENGAGED BEFORE THE
ELECTRICAL WIRES ARE
CONNECTED OR
DISCONNECTED FROM THE FIRE BOTTLE CAR
TRIDGES OR
ACCIDENT AL
DISCHARGE COULD RESUL T .
A.
(Refer to Figure 1 , Sheet
1.)
Make sure the HS048YW1NF050B Y ellow ID Sleeve that is marked W ARNING:
CONNECT ONL Y T O CENTER POST (POS +) on the wires that follow:
• L1BOTL1 - NP209
• R1BOTL1 - PP209
• L1BOTL2 - KP208
• R1BOTL2 - PP208 B.
(Refer to Figure 1 , Sheet
1.)
Make sure the HS048YW1NF050B Y ellow ID Sleeve that is marked W ARNING:
CONNECT ONL Y T O SIDE POST (NEG -) on the wires that follow:
• L2BOTL1 - GND - 17
• R2BOTL1 - GND - 17
• L2BOTL2 - GND - 16
• R2BOTL2 - GND - 16 C.
If the wiring is not properly identified or if the Y ellow ID sleeve is not legible , print on a Y ellow ID Sleeve and install the sleeve on the correct wire as listed in Step
6.A and
6.B.
(Refer to the Citation Standard Practices Manual , Chapter 20 , Wiring and Resistors - Maintenance Practices.)
D.
Inspect the wiring and ring terminal.
(Refer to the Citation Standard Practices Manual , Chapter 20 , Electrical Component Cleaning and Inspection - Maintenance Practices.)
If the wiring needed to be relabeled or if the ring terminal requires replacement , install a new MS25036 - 149 Ring T erminal.
(Refer to the Citation Standard Practices Manual , Chapter 20 , Splices , T erminals and heat Shrinkable T ubing - Maintenance Practices.)
E.
Shrink the yellow ID sleeves over the body of the terminal.
(Refer to the Citation Standard Practices Manual , Chapter 20 , Wiring and Resistors - Maintenance Practices.)
F .
T orque the lock nuts to 10 to 15 inch - pounds.
Citation SER VICE LETTER MANDA T OR Y SL560 - 26 - 02
7.
Remove the jumper wires from fire bottle cartridges (squibs) individually before you connect the fire bottle wiring.
A.
Make sure that the voltage is less than
0.1 VDC in all wires before you connect them to the fire bottles.
8.
(Refer to Figure 1 , Sheet
1.)
Make sure the wires are correctly connected to the fire extinguisher bottles as follows:
CAUTION:
Do not over torque the lock nuts.
If you torque the electrical stud lock nuts more than 25 inch - pounds , stud rotation and shear failure can occur .
A.
Connect wire L1BOTL1 - NP209 to BOTTLE 1 cartridge center post.
B.
Connect wire R1BOTL1 - PP209 to BOTTLE 1 cartridge center post.
C.
Connect wire L1BOTL2 - KP208 to BOTTLE 2 cartridge center post.
D.
Connect wire R1BOTL2 - PP208 to BOTTLE 2 cartridge center post.
E.
T orque the lock nuts to 10 to 15 inch - pounds.
9.
Install access panel 31 1AZ.
(Refer to the Model 560 Maintenance Manual , Chapter 6 , Access Plates and Panels Identification - Description and Operation.)
10.
Engage the L F / W SHUT OFF and R F / W SHUT OFF circuit breakers on the left circuit breaker panel.
1.
Remove the maintenance warning tags and connect the airplane battery .
12.
Make an entry in the airplane logbook that states compliance and method of compliance with this service document.
NOTE:
T extron A viation recommends that compliance with all service documents is reported to a maintenance tracking system provider .
• Complete a record of compliance.
(Maintenance T ransaction Report , Log Book Entry , or other record of compliance.)
• Put a copy of the completed record of compliance in the airplane logbook.
• Send a copy of the completed record of compliance to the maintenance tracking system provider used.
SL560 - 26 - 02 Revision 1 - July 31 , 2024 Page 5
Beechcraft Hawker Citation SERVICE LETTER TEXTRON ÀVIATION Cessna MANDATORY SL560-26-02 A111269 000001
FORWARD AFT
FIRE BOTTLE FIRE BOTTLE (BOTTLE 1) (BOTTLE 2) (REFERENCE) (REFERENCE) R2BOTL1-GND17 L1BOTL2-KP208 (NEGATIVE SIDE POST) (POSITIVE CENTER POST) R1BOTL1-PP209 L2BOTL2-GND16 (POSITIVE CENTER POST) (NEGATIVE SIDE POST) R1BOTL2-PP208 L2BOTL1-GND17 (POSITIVE CENTER POST) (NEGATIVE SIDE POST) R2BOTL2-GND16 (NEGATIVE SIDE POST) L1BOTL1-NP209 (POSITIVE CENTER POST)
VIEW A-A 5610T1049 A6555T081 Figure 1. Fire Bottle Wiring (Sheet 1) SL560-26-02 Page 6 Revision 1 - July 31, 2024
Citation SER VICE LETTER MANDA T OR Y SL560 - 26 - 02 MA TERIAL
INFORMA TION Order parts below to complete this service document.
NEW P / N QUAN- TITY KEY WORD OLD P / N
INSTRUCTIONS /
DISPOSITION HS048YW1NF050B 8 Y ellow ID Sleeve If Necessary MS25036 - 149 8 Wire Ring T erminal If Necessary SL560 - 26 - 02 1 Instructions * Please contact T extron A viation Parts Distribution for current cost and availability of parts listed in this service document.
Phone at 1 - 800 - 835 - 4000 (Domestic) or 1 - 316 - 517 - 5603 (International).
For more information , please visit the T APD Support & Aftermarket Account Management website at https:
/ / ww2.txtav .com / Parts / Promos / T APD.
Based on availability and lead times , parts may require advanced scheduling.
SL560 - 26 - 02 Revision 1 - July 31 , 2024 Page 7
No text on this page: it may be a figure. Open the PDF to see it.
Citation OWNER
ADVISOR Y SL560 - 26 - 02 TITLE FIRE
PROTECTION - FIRE BOTTLE WIRE
VERIFICA TION AND TEST T O:
Cessna Model 560 (Citation Encore) Aircraft Owner REASON The engine fire bottle positive and negative terminal studs are the same size.
It is possible to connect the wires to the wrong stud on the fire extinguisher cartridge.
This will cause the circuit breaker to disengage (or pop) when you attempt to discharge the bottle(s).
COMPLIANCE MANDA T OR Y .
This service document must be accomplished within 100 flight hours or 60 days from the date of receipt , whichever occurs first.
LABOR HOURS WORK PHASE LABOR - HOURS Inspect & T est
1.5 MA TERIAL
INFORMA TION P ART NUMBER A V
AILABILITY COST HS048YW1NF050B * * MS25036 - 149 * * * Please contact T extron A viation Parts Distribution for current cost and availability of parts listed in this service document.
Phone at 1 - 800 - 835 - 4000 (Domestic) or 1 - 316 - 517 - 5603 (International).
For more information , please visit the T APD Support & Aftermarket Account Management website at https:
/ / ww2.txtav .com / Parts / Promos / T APD.
Based on availability and lead times , parts may require advanced scheduling.
W
ARRANTY This service document is mandatory .
Eligible airplanes may qualify for parts and labor coverage to the extent noted in the Labor Hours and Material A vailability sections of this document.
Original Issue - July 8 , 2021 SL560 - 26 - 02 Revision A - July 31 , 2024 Page 1 of 2 T extron A viation Customer Service , P .O.
Box 7706 , Wichita , KS 67277 , U.S.A.
1 - 316 - 517 - 5800 This document contains technical data and is subject to U.S.
export regulations.
This information has been exported from the United States in accordance with export administration regulations.
Diversion contrary to U.S.
law is prohibited.
ECCN:
9E991
COPYRIGHT © 2021
SL560 - 26 - 02 Page 2 Revision A - July 31 , 2024 Citation OWNER
ADVISOR Y SL560 - 26 - 02 Eligibility:
Airplanes identified within the serial number ef fectivity of this service document must have active Airframe warranty coverage on the original issue date of this document and the coverage must be active on the day the work is accomplished.
Parts Coverage:
T extron A viation - owned and T extron A viation - authorized Service Facilities , operators , or other maintenance facilities may submit a claim for the parts required to accomplish this service document as defined in the Material A vailability section of this document.
Labor Coverage:
T extron A viation - owned and T extron A viation - authorized Service Facilities rated to perform maintenance on the specific model of Cessna Aircraft may submit a claim for the labor necessary to accomplish this service document as defined in the Labor Hours section of this document.
Credit Application:
After this service document has been accomplished , a claim must be submitted to T extron A viation within 30 days of the service document completion.
Claims for compliance of this service document are to be filed as a W4 type claim.
Please submit your claim form online at ww2.txtav .com / Parts or email the completed T extron A viation Claim Form to warranty@txtav .com .
If submitted on - line a Return Authorization will be provided.
If a paper claim is submitted your claim will be entered into the system and a Return Authorization will be sent to you.
The Return Authorization must accompany any required return parts (see Material A vailability ) , to the point of purchase.
Parts to be returned to T extron A viation Parts Distribution should be forwarded to:
T extron A viation Parts Distribution W arranty Administration 285 South Greenwich Road Bldg B89 , Docks 1 - 4 Wichita , KS 67206 USA Expiration:
July 31 , 2026 (after this date the owner / operator assumes the responsibility for compliance costs) T extron A viation reserves the right to void continued airplane warranty coverage for the parts af fected by this service document until the service document is accomplished.
NOTE:
As a convenience , service documents are now available online to all our customers through a simple , free - of - charge registration process.
If you would like to sign up , please visit the Customer Access link at www .txtavsupport.com to register .