SERVICE LETTERS
Service letters are notifications regarding necessary service or modifications to Simplex products.
SL2012-005B 508 Turret Fastener Replacement 09-10-2012
Model 508 replacement of fasteners in Turret Assembly service letter.
Simplex SL 2012-005B_508 09-10-2012.pdf
Adobe Acrobat document [370.4 KB]
Model 508 replacement of fasteners in Turret Assembly service letter.
Simplex SL 2012-005B_508 09-10-2012.pdf
Adobe Acrobat document [370.4 KB]
SL2010-007 R44 Boom Valve Modification 06-29-2010
R44III Spray System boom valve control head adapter plate service letter.
Simplex SL2010-007 R44III 06-29-2010.pdf
Adobe Acrobat document [456.0 KB]
R44III Spray System boom valve control head adapter plate service letter.
Simplex SL2010-007 R44III 06-29-2010.pdf
Adobe Acrobat document [456.0 KB]
SL2010-006 R44 Spray Engine Wiring Harness Mod 06-25-2010
R44III Spray System engine wiring harness modification service letter.
Simplex SL2010-006 R44III 06-25-2010.pdf
Adobe Acrobat document [354.5 KB]
R44III Spray System engine wiring harness modification service letter.
Simplex SL2010-006 R44III 06-25-2010.pdf
Adobe Acrobat document [354.5 KB]
SL2010-005 328 Hydraulic Back Pressure Repair 04-28-2012
Kamov Ka-32 Fire Attack model 328 hydraulic back pressure repair service letter.
Simplex SL 2010-005 328 04-28-2010.pdf
Adobe Acrobat document [189.1 KB]
Kamov Ka-32 Fire Attack model 328 hydraulic back pressure repair service letter.
Simplex SL 2010-005 328 04-28-2010.pdf
Adobe Acrobat document [189.1 KB]
SL2010-004 301 TFD hover pump bumper replacement 03-23-2010
Model 301 Fire Attack hover pump bumper replacement service letter.
Simplex SL 2010-004 model 301 03-23-2012[...]
Adobe Acrobat document [111.8 KB]
Model 301 Fire Attack hover pump bumper replacement service letter.
Simplex SL 2010-004 model 301 03-23-2012[...]
Adobe Acrobat document [111.8 KB]
SL2010-003 304 tank vibration dampening 01-26-2010
Model 304 tank vibration dampening service letter.
Simplex SL 2010-003 model 304 01-26-2010[...]
Adobe Acrobat document [167.0 KB]
Model 304 tank vibration dampening service letter.
Simplex SL 2010-003 model 304 01-26-2010[...]
Adobe Acrobat document [167.0 KB]
SL2010-002 304 Rev A tank attach 08-04-2010
Model 304 Fire Attack tank inspection service letter.
Simplex SL 2010-002 304 08-04-2010.pdf
Adobe Acrobat document [910.6 KB]
Model 304 Fire Attack tank inspection service letter.
Simplex SL 2010-002 304 08-04-2010.pdf
Adobe Acrobat document [910.6 KB]
SL2010-001 316 Tank Attack 08-09-2010
AS332L and EC225 model 316 Fire Attack tank attachment inspection service letter.
Simplex SL 2010-001 316 08-09-2010.pdf
Adobe Acrobat document [809.8 KB]
AS332L and EC225 model 316 Fire Attack tank attachment inspection service letter.
Simplex SL 2010-001 316 08-09-2010.pdf
Adobe Acrobat document [809.8 KB]
SL2009-020 208 and 308 tank attach 03-17-2010
Bell 407 spray model 208 and Bell 407 Fire Attack model 308 tank attachment inspection service letter.
Simplex SL 2009-020 208 and 308 03-17-20[...]
Adobe Acrobat document [425.4 KB]
Bell 407 spray model 208 and Bell 407 Fire Attack model 308 tank attachment inspection service letter.
Simplex SL 2009-020 208 and 308 03-17-20[...]
Adobe Acrobat document [425.4 KB]
SL2009-019 304,308,310,311,323 hydraulic hover refill pump 03-17-2010
Bell 205A1, 205B, 212, 412, AB412, 412EP, UH-1 Fire Attack model 304. Bell 407 model 308 Fire Attack, AS350 and AS355 Fire Attack model 301, BK117 Fire Attack model 311 and A119 Fire Attack model 323.
Simplex SL 2009-019 03-17-2010.pdf
Adobe Acrobat document [284.7 KB]
Bell 205A1, 205B, 212, 412, AB412, 412EP, UH-1 Fire Attack model 304. Bell 407 model 308 Fire Attack, AS350 and AS355 Fire Attack model 301, BK117 Fire Attack model 311 and A119 Fire Attack model 323.
Simplex SL 2009-019 03-17-2010.pdf
Adobe Acrobat document [284.7 KB]
SL2009-018 348 hover refill pump 03-17-2012
Fire Attack model 348 AC electric hover refill pump recommended maintenance schedule service letter.
Simplex SL 2009-018 348 03-17-2010.pdf
Adobe Acrobat document [177.7 KB]
Fire Attack model 348 AC electric hover refill pump recommended maintenance schedule service letter.
Simplex SL 2009-018 348 03-17-2010.pdf
Adobe Acrobat document [177.7 KB]
SL2009-017 328 Hover refill pump 03-17-2010
Fire Attack model 328 AC electric hover refill pump recommended maintenance service letter.
Simplex SL 2009-017 328 -03-17-2010.pdf
Adobe Acrobat document [178.9 KB]
Fire Attack model 328 AC electric hover refill pump recommended maintenance service letter.
Simplex SL 2009-017 328 -03-17-2010.pdf
Adobe Acrobat document [178.9 KB]
SL2009-016 316 Hover refill pump 08-09-2010
Fire Attack model 316 AC electric hover refill pump recommended maintenance schedule service letter.
Simplex SL 2009-016 Rev A_316HRP.pdf
Adobe Acrobat document [261.3 KB]
Fire Attack model 316 AC electric hover refill pump recommended maintenance schedule service letter.
Simplex SL 2009-016 Rev A_316HRP.pdf
Adobe Acrobat document [261.3 KB]
SL2009-015 304, 326 03-17-2010
Bell 205A1, 205B, 212, 412, AB412, 412EP, UH-1 Fire Attack model 304 and AW139 DC electric hover refill pump recommended maintenance schedule service letter.
Simplex SL 2009-015 304 and 326 03-17-20[...]
Adobe Acrobat document [206.0 KB]
Bell 205A1, 205B, 212, 412, AB412, 412EP, UH-1 Fire Attack model 304 and AW139 DC electric hover refill pump recommended maintenance schedule service letter.
Simplex SL 2009-015 304 and 326 03-17-20[...]
Adobe Acrobat document [206.0 KB]
SL2009-014 08-04-2010
Model 301, 304, 308, 310, 311, 323 DC Electric Hover Refill Pump Recommended Maintenance Schedule service letter.
Simplex SL 2009-014 08-04-2010.pdf
Adobe Acrobat document [512.8 KB]
Model 301, 304, 308, 310, 311, 323 DC Electric Hover Refill Pump Recommended Maintenance Schedule service letter.
Simplex SL 2009-014 08-04-2010.pdf
Adobe Acrobat document [512.8 KB]
SL2009-013 08-04-2010
Fire Attack System Models 304, 308, 310, 311, 316, 323, 327, 328, 348 Dispersal Door Overhaul service letter.
Simplex SL 2009-013 08-04-2010.pdf
Adobe Acrobat document [879.7 KB]
Fire Attack System Models 304, 308, 310, 311, 316, 323, 327, 328, 348 Dispersal Door Overhaul service letter.
Simplex SL 2009-013 08-04-2010.pdf
Adobe Acrobat document [879.7 KB]
SL2009-012 210 and 310 03-17-2010
Models 210 and 310 Tank Attachment Inspection service letter.
Simplex SL 2009-012 210 and 310 03-17-20[...]
Adobe Acrobat document [784.5 KB]
Models 210 and 310 Tank Attachment Inspection service letter.
Simplex SL 2009-012 210 and 310 03-17-20[...]
Adobe Acrobat document [784.5 KB]
SL2009-011 301 03-17-2010
Fire Attack System Model 301 Dispersal Door Overhaul service letter.
Simplex SL 2009-011 301 03-17-2010.pdf
Adobe Acrobat document [301.8 KB]
Fire Attack System Model 301 Dispersal Door Overhaul service letter.
Simplex SL 2009-011 301 03-17-2010.pdf
Adobe Acrobat document [301.8 KB]
SL2009-010 328 10-15-2009
Fire Attack System Model 328 Wiring Harness Repair service letter.
Simplex SL 2009-010 328 10-15-2009.pdf
Adobe Acrobat document [55.9 KB]
Fire Attack System Model 328 Wiring Harness Repair service letter.
Simplex SL 2009-010 328 10-15-2009.pdf
Adobe Acrobat document [55.9 KB]
SL2009-009 326 10-15-2009
Fire Attack System Model 326 Installation of Overflow Shroud service letter.
Simplex SL 2009-009 326 10-15-2009.pdf
Adobe Acrobat document [94.9 KB]
Fire Attack System Model 326 Installation of Overflow Shroud service letter.
Simplex SL 2009-009 326 10-15-2009.pdf
Adobe Acrobat document [94.9 KB]
SL2009-007 301 09-08-2009
Fire Attack System Model 301 Cockpit Display Box Door Position Led service letter.
Simplex SL 2009-007 301 10-08-2009.pdf
Adobe Acrobat document [513.6 KB]
Fire Attack System Model 301 Cockpit Display Box Door Position Led service letter.
Simplex SL 2009-007 301 10-08-2009.pdf
Adobe Acrobat document [513.6 KB]
SL2009-006 326 08-13-2009
Fire Attack System Model 326 Installation of Relay Cover service letter.
Simplex SL 2009-006 326 08-13-2009.pdf
Adobe Acrobat document [186.3 KB]
Fire Attack System Model 326 Installation of Relay Cover service letter.
Simplex SL 2009-006 326 08-13-2009.pdf
Adobe Acrobat document [186.3 KB]
SL2009-005 301 06-04-2009
Fire Attack System Model 301 Shroud Modification service letter.
Simplex SL 2009-005 301 06-04-2009.pdf
Adobe Acrobat document [51.9 KB]
Fire Attack System Model 301 Shroud Modification service letter.
Simplex SL 2009-005 301 06-04-2009.pdf
Adobe Acrobat document [51.9 KB]
SL2009-004 Mack Javelin 05-18-2009
Service letter for repairing Mack Javelin Turret Lock Handle.
Simplex SL 2009-004 Mack Javelin 05-18-2[...]
Adobe Acrobat document [147.9 KB]
Service letter for repairing Mack Javelin Turret Lock Handle.
Simplex SL 2009-004 Mack Javelin 05-18-2[...]
Adobe Acrobat document [147.9 KB]
SL2009-003 316 04-16-2009
Fire Attack System Model 316 Neble Plug Clearance Cup service letter.
Simplex SL 2009-003 316 04-16-2009.pdf
Adobe Acrobat document [212.6 KB]
Fire Attack System Model 316 Neble Plug Clearance Cup service letter.
Simplex SL 2009-003 316 04-16-2009.pdf
Adobe Acrobat document [212.6 KB]
SL2009-002 03-05-2009
Fire Attack System Models 301, 304, 308, 310, 311, 314, 316, 323, 326, 327 recommended periodic servicing for best performance service letter.
Simplex SL 2009-002 03-05-2009.pdf
Adobe Acrobat document [2.2 MB]
Fire Attack System Models 301, 304, 308, 310, 311, 314, 316, 323, 326, 327 recommended periodic servicing for best performance service letter.
Simplex SL 2009-002 03-05-2009.pdf
Adobe Acrobat document [2.2 MB]
SL2009-001 316 02-11-2009
Fire Attack System Model 316 for the labelling of the fire attack circuit breakers service letter.
Simplex SL 2009-001 316 02-11-2009.pdf
Adobe Acrobat document [77.7 KB]
Fire Attack System Model 316 for the labelling of the fire attack circuit breakers service letter.
Simplex SL 2009-001 316 02-11-2009.pdf
Adobe Acrobat document [77.7 KB]
SL2008-008 301 11-11-2008
Fire Attack Model 301 Composite repair for the actuator mount attachment holes service letter.
Simplex SL 2008-008 301 11-11-2008.pdf
Adobe Acrobat document [149.7 KB]
Fire Attack Model 301 Composite repair for the actuator mount attachment holes service letter.
Simplex SL 2008-008 301 11-11-2008.pdf
Adobe Acrobat document [149.7 KB]
SL2008-004 304 04-14-2008
Fire Attack System Model 304 Modification of the door actuator and shaft assembly service letter.
Simplex SL 2008-004 304 04-14-2008.pdf
Adobe Acrobat document [598.6 KB]
Fire Attack System Model 304 Modification of the door actuator and shaft assembly service letter.
Simplex SL 2008-004 304 04-14-2008.pdf
Adobe Acrobat document [598.6 KB]
SL2008-002 208 03-24-2008
Model 208 Modification of the location of tank attachment fittings installed on a Bell 407 aircraft service letter.
Simplex SL 2008-002 208 03-24-2008.pdf
Adobe Acrobat document [94.8 KB]
Model 208 Modification of the location of tank attachment fittings installed on a Bell 407 aircraft service letter.
Simplex SL 2008-002 208 03-24-2008.pdf
Adobe Acrobat document [94.8 KB]
SL2008-001 310 04-03-2008
Fire Attack System Model 310 installation of modified tank top skin inserts service letter.
Simplex SL 2008-001 310 04-03-2008.pdf
Adobe Acrobat document [2.1 MB]
Fire Attack System Model 310 installation of modified tank top skin inserts service letter.
Simplex SL 2008-001 310 04-03-2008.pdf
Adobe Acrobat document [2.1 MB]
SL2007-009 10900-004 08-06-2008
Model 10900-004 Replacement of 10953-005 threaded rod assembly installed on KAMOV Ka-32 rotorcraft service letter.
Simplex SL 2007-009 10900-004 08-06-2008[...]
Adobe Acrobat document [58.7 KB]
Model 10900-004 Replacement of 10953-005 threaded rod assembly installed on KAMOV Ka-32 rotorcraft service letter.
Simplex SL 2007-009 10900-004 08-06-2008[...]
Adobe Acrobat document [58.7 KB]
SL2007-008 10900-050 & 328 08-06-2008
Model 10900-050 & 328 Replacement of 10953-002 threaded rod assembly and 10954 threaded end installed on KAMOV Ka-32 Rotorcraft service letter.
Simplex SL 2007-008 10900-050 328 08-06[...]
Adobe Acrobat document [59.3 KB]
Model 10900-050 & 328 Replacement of 10953-002 threaded rod assembly and 10954 threaded end installed on KAMOV Ka-32 Rotorcraft service letter.
Simplex SL 2007-008 10900-050 328 08-06[...]
Adobe Acrobat document [59.3 KB]
SL2007-007 10900 08-06-2008
Fire Attack System Model 10900 Replacement of the 10953-001 threaded rod assembly installed on KAMOV Ka-32 Rotorcraft service letter.
Simplex SL 2007-007 10900 08-06-2008.pdf
Adobe Acrobat document [57.9 KB]
Fire Attack System Model 10900 Replacement of the 10953-001 threaded rod assembly installed on KAMOV Ka-32 Rotorcraft service letter.
Simplex SL 2007-007 10900 08-06-2008.pdf
Adobe Acrobat document [57.9 KB]
SL2007-006 10900-005 08-06-2008
Model 10900-005 Replacement of 10953-009 threaded rod assembly and 10954 threaded end installed on KAMOV Ka-32 Rotorcraft service letter.
Simplex SL 2007-006 10900-005 08-06-2008[...]
Adobe Acrobat document [58.6 KB]
Model 10900-005 Replacement of 10953-009 threaded rod assembly and 10954 threaded end installed on KAMOV Ka-32 Rotorcraft service letter.
Simplex SL 2007-006 10900-005 08-06-2008[...]
Adobe Acrobat document [58.6 KB]
SL2007-005 06-19-2007
Installation of vacuum breaker valve in hover refill elbow used on: P333 Door System s/n 001 for installation on Eurocopter EC225 service letter.
Simplex SL 2007-005 06-19-2007.pdf
Adobe Acrobat document [80.1 KB]
Installation of vacuum breaker valve in hover refill elbow used on: P333 Door System s/n 001 for installation on Eurocopter EC225 service letter.
Simplex SL 2007-005 06-19-2007.pdf
Adobe Acrobat document [80.1 KB]
SL2007-002 208 03-20-2007
Model 208 Spray System Modification of hardpoints and struts on Bell Helicopter Model 407 Rotorcraft s/n 53618, tail number N618TS service letter.
Simplex SL 2007-002 208 03-20-2007.pdf
Adobe Acrobat document [368.8 KB]
Model 208 Spray System Modification of hardpoints and struts on Bell Helicopter Model 407 Rotorcraft s/n 53618, tail number N618TS service letter.
Simplex SL 2007-002 208 03-20-2007.pdf
Adobe Acrobat document [368.8 KB]
SL2007-001 328 01-22-2007
Fire Attack System Model 328 Hydraulic back pressure repair service letter.
Simplex SL 2007-001 328 01-22-2007.pdf
Adobe Acrobat document [123.0 KB]
Fire Attack System Model 328 Hydraulic back pressure repair service letter.
Simplex SL 2007-001 328 01-22-2007.pdf
Adobe Acrobat document [123.0 KB]
SL2006-003 328 11-04-2006
Fire Attack System Model 328 Installation of a vacuum breaker valve on the hover refill elbow service letter.
Simplex SL 2006-003 328 11-04-2006.pdf
Adobe Acrobat document [80.2 KB]
Fire Attack System Model 328 Installation of a vacuum breaker valve on the hover refill elbow service letter.
Simplex SL 2006-003 328 11-04-2006.pdf
Adobe Acrobat document [80.2 KB]
SL2006-002 323-001 03-22-2006
Fire Attack System Model 323-001 Installation of 323-001 Dual "L" foam bags service letter.
Simplex SL 2006-002 323-001 03-22-2006.p[...]
Adobe Acrobat document [173.7 KB]
Fire Attack System Model 323-001 Installation of 323-001 Dual "L" foam bags service letter.
Simplex SL 2006-002 323-001 03-22-2006.p[...]
Adobe Acrobat document [173.7 KB]
SL2006-001 323 03-14-2006
Fire Attack System Model 323 Installation of Lower Shroud Brackets service letter.
Simplex SL 2006-001 323 03-14-2006.pdf
Adobe Acrobat document [129.6 KB]
Fire Attack System Model 323 Installation of Lower Shroud Brackets service letter.
Simplex SL 2006-001 323 03-14-2006.pdf
Adobe Acrobat document [129.6 KB]
SL2005-004 308 12-28-2005
Fire Attack System Model 308 Modification of Tank Hardpoints and Struts for installation on Bell 407 rotorcraft s/n 53650 service letter.
Simplex SL 2005-004 308 12-28-2005.pdf
Adobe Acrobat document [161.1 KB]
Fire Attack System Model 308 Modification of Tank Hardpoints and Struts for installation on Bell 407 rotorcraft s/n 53650 service letter.
Simplex SL 2005-004 308 12-28-2005.pdf
Adobe Acrobat document [161.1 KB]
SL2005-003 310-002 07-18-2005
Fire Attack System Model 310-002 Installation of Modified Tank Top Skin Inserts for Eurocopter de Mexico service letter.
Simplex SL 2005-003 310-002 07-18-2005.p[...]
Adobe Acrobat document [332.1 KB]
Fire Attack System Model 310-002 Installation of Modified Tank Top Skin Inserts for Eurocopter de Mexico service letter.
Simplex SL 2005-003 310-002 07-18-2005.p[...]
Adobe Acrobat document [332.1 KB]
SL2005-002 304 06-20-2005
Fire Attack System Model 304 Installation of Shims on Attachment fittings for Eagle Copters of Calgary, Alberta, Canada.
Simplex SL 2005-002 304 06-20-2005.pdf
Adobe Acrobat document [35.6 KB]
Fire Attack System Model 304 Installation of Shims on Attachment fittings for Eagle Copters of Calgary, Alberta, Canada.
Simplex SL 2005-002 304 06-20-2005.pdf
Adobe Acrobat document [35.6 KB]
SL2005-001 301 05-26-2005
Fire Attack System Model 301-001 Alteration of tank level sensor connection service letter.
Simplex SL 2005-001 301 05-26-2005.pdf
Adobe Acrobat document [187.0 KB]
Fire Attack System Model 301-001 Alteration of tank level sensor connection service letter.
Simplex SL 2005-001 301 05-26-2005.pdf
Adobe Acrobat document [187.0 KB]
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