MT-Propeller
MT-Propeller
Download all Service Dokuments in zip.files (only for certified Service Stations)
| No. | Content | Date of Revision |
|---|---|---|
| List (.pdf, 250k) |
List of Service Letter download this list as .pdf file |
April 29, 2024 |
| SL1 (.pdf, 12k) |
Replacing of lag screws part No. A-550-85 and part No. A-550-65 by lag screws part No. A-983-85 and part
No. A-983-65. Affected Propellers: All Constant Speed Propellers. |
May 12, 1999 |
| SL2 |
Aeroshell No. 5 is used instead of Aeroshell No. 6. Affected Propellers: All Constant Speed Propellers. Replaced by Service Letter No. 21 |
May 12, 1999 |
| SL3 (.pdf, 10k) |
Modification of the pitch change pin location. Affected Propellers: All Constant Speed Propellers. |
May 12, 1999 |
| SL4 |
Introduction of DF O-Rings. Affected Propellers: All Constant Speed Propellers. Replaced by Service Letter No. 14 |
May 12, 1999 |
| SL5 (.pdf, 9k) |
Replacing of screws part no. MS 35265-65/ A-1635-70 and washers part no. AN 960-10. Affected Propellers: All Hydraulic Constant Speed Propellers. |
May 12, 1999 |
| SL6A (.pdf, 9k) |
Modification of Counterweights A-597-B. Affected Propellers: MTV-9-B-C/CL250-27, MTV-9-B-C/CL260-27 |
May 12, 1999 |
| SL7A (.pdf, 19k) |
Replacement of screws M3x10 by M3x12. Affected Propellers: All Electric Constant Speed Propellers |
March 05, 2003 |
| SL8 | Obsolete | |
| SL9A (.pdf, 9k) |
Replacing of blade bearings A-317, A-233, A-004 Affected Propellers: All variable pitch propellers |
Aug 27, 2001 |
| SL10 (.pdf, 16k) |
Teardown inspection at 1/3 TBO. Affected Propellers: All Variable Pitch Aerobatic Propellers. |
March 01, 2000 |
| SL11 (.pdf, 9k) |
Installation of standard electric pitch change motor Affected Propellers: All Electric Constant Speed Propellers. |
April 05, 2000 |
| 12 |
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| SL13 (.pdf, 8k) |
Painting of Counterweights Affected Propellers: All Counterweighted Propellers |
July 11, 2002 |
| SL14D (.pdf, 14k) |
New blade seals in MT-Propeller constant speed propellers. Affected Propellers: All MTV Constant Speed Propellers. |
March 20, 2003 |
| SL15 R1 (.pdf, 106k) |
New counterweights Affected Propellers: All MT-Propellers with the new counterweights installed |
April 30, 2021 |
| SL16 (.pdf, 9k) |
Erosion Sheath on fixed pitch propeller Affected Propellers: All Fixed Pitch Propellers with a Diameter > 69.3 inch |
Feb 01, 2001 |
| SL17C (.pdf, 13k) |
Replacement of MTV-9/ -12/ -14/ -15 hub (serial numbers up to 97xxx). Affected Propellers: MTV-9, MTV-12, MTV-14, MTV-15 |
March 09, 2011 |
| SL18 R1 (.pdf, 70k) |
Additional Installation of PTFE back up ring Affected Propellers: MTV-9-( ), MTV-12, MTV-14-( ) |
July 29, 2015 |
| SL19 (.pdf, 9k) |
New Control Unit P-120-A (beginning with serial no. WA01-XXX) Affected Propellers: All aeroplanes and motor gliders with an electrical variable pitch MT-Propeller with a Control Unit P-120-A. |
Oct 24, 2001 |
| SL20A (.pdf, 72k) |
Replacement of the front plate of MTV-9-/MTV-12-/MTV-14-/MTV-16-( )
with new hub Affected Propellers: MTV-9/ -12/ -14/ -16, standard, with feather and reverse (M) (P). |
Feb 19, 2009 |
| SL21B (.pdf, 21k) |
Replacement of Aeroshell 5 by MT 2 Propeller Grease including improvement of viscosity | Nov 04, 2002 |
| SL22K (.pdf, 71k) |
Leading edge installation MT-Propeller Constant Speed Propeller Blades of type: C188-18b, C190-18b, C193-18b, C198-25, ()225-37a, ()180-59, ()180-59b, ()183-17e (-A), ()183-59, ()183-59b, ()188-59b, CFLR250-55b Affected Propellers: MT-Propeller Constant Speed Propeller |
March 09, 2011 |
| SL23C (.pdf, 14k) |
Grease Leakage Problem. Affected Propellers: MTV-12-B/180-17 installed on Diamond DA40 with Lyc. IO-360-M1A. |
March 21, 2003 |
| SL24A (.pdf, 14k) |
Torque of Check Nuts and Slotted Nuts. Affected Propellers: All hydraulic MTV-Propellers. |
March 07, 2003 |
| SL25 (.pdf, 20k) |
Replacement of return spring, part no. A-085 by new return spring part no. D-389-K Affected Propeller: MTV-6( ) |
Jan 28, 2004 |
| SL26A (.pdf, 72k) |
Front Plates Affected Propeller: All hydraulic MTV-Propeller (except dual acting Walter Reverse Systems -R(W)) manufatured between Augst 1999 up to October 2004 (serial no. 99xxx to 04xxx) |
Nov 12, 2004 |
| SL27R1 (.pdf, 67k) |
Cure date and shelf live of MT-Propeller O-Rings Affected Propeller: All hydraulic and electric constant speed MT-Propeller. |
Sept. 19, 2012 |
| SL28 (.pdf, 36k) |
Installation of oil cooler scoop P/N 763-8035-1/MT on Cessna U206 , TU206G
(with Soloy Turbine PAC, FAA STC SA 3353 NM) equipped with 5-blade MTV-5-1-E-C-F-R(M)/CFR220-54 propeller Affected Propeller: MTV-5-1-E-C-F-R(M)/CFR220-54 |
July 03, 2006 |
| SL29 R6 (.pdf, 51k) |
Additional application of carbon fiber plies on blade tip area Affected Propellers: MTV-15-B/210-58 and MTV-15-B/205-58 on Husky A1-( ) MTV-15-B/203-58 on ACA Scout MTV-15-C/200-50p / MTV-20-C/200-50p and MTV-15-( )/183-50 MTV-12-( )/( )180-57 | Aug 27, 2021 |
| SL30D (.pdf, 54k) |
Fluid De-Ice Boot Installation on MT-Propeller Composite Blades | June 18, 2009 |
| SL31A (.pdf, 88k) |
MTV-9-B-S/198-58B Rework and Modification of Blade Preload-Nut A-1368 and Blade Ferrule A-1367 | Feb 12, 2008 |
| SL32 R9 (.pdf, 1.9MB) |
MT-, MTE and MTV-Propellers with natural Composite Blades In-Field-Repairs |
March 08, 2024 |
| SL32-1 (.pdf, 980kb) |
MT-, MTE and MTV-Propellers with natural Composite Blades Painting |
Nov 11, 2013 |
| SL32-2 R1 (.pdf, 980kb) |
Performance of Minor Infield Repairs of the Natural Composite MT-Propeller Blades During the Operation Time between Overhaul Periods | March 08, 2024 |
| SL33A (.pdf, 71k) |
Shrouded Propeller Installation (if not enough clearance between blade tip and shroud) | Jan 20, 2009 |
| SL34 (.pdf, 116k) |
MTV-9-B-S/198-58B installed on Cessna 182 (SMA-Application) with Propeller hub A-926-2-( ) | Oct 20, 2008 |
| SL34-1 (.pdf, 145k) |
MTV-6-( )-( )with Fluid Deice Systemn MTV-6-( )-( )-( ) propeller hub: A-900-I / A-1677 | May 22, 2017 |
| SL35A (.pdf, 63k) |
All MT-Constant Speed Propellers Cleaning of Parts and Hubs by Glass / Plastic Media Blasting |
March 13, 2009 |
| SL36 (.pdf, 90k) |
Rework of Hub Inserts to Newest Technical Standard during next Overhaul and/or Repair MTV-16-1-N-C-F-R(P) MTV-27-1-N-C-F-R(P) MTV-27-2-N-C-F-R(P) |
May 07, 2009 |
| SL37A |
Propeller Governors for Electric Control P-857 / P-877 series Correct Adjustment of Travel of Speed Change Nut |
Dec 02, 2011 |
| SL38 R2 (.pdf, 100k) |
Procedure for the Installation of the Preload System P-890 Affected Proeller: MTV-12, MTV-14, MTV-22 |
Sept 09, 2014 |
| SL39 | Start Lock Springs Exchange of Start Lock Springs, Identification of Springs (for special customer only) |
Oct 07, 2009 |
| SL40 | Propeller Governors for Electric Control P-853, P-877 series Installation of the Flexible Max Speed Stop Modification “D” (for special customer only) |
Nov 10, 2009 |
| SL41 R1 (.pdf, 140k) |
Optional Replacement of Return Spring Part N. A-880
by new Return Spring Part No. A-1772 and A-1771-1 Affected Propeller: MTV-12-( )-C-F |
June 23, 2015 |
| SL42 (.pdf, 460k) |
Propeller Designation System | March 21, 2010 |
| SL43 (.pdf, 90k) |
Cure Date and Shelf Life of MT-2 Propeller Grease | May 09, 2011 |
| SL44 R1 | Length of stainless-steel erosion protection sheaths for single blades | May 25, 2020 |
| SL45 R2 | (Internal) | |
| SL46 (.pdf, 40k) |
Fittings installed on Unfeathering Accumulator P-893-( )/P-905-( ) on all Diamond DA42 with Thielert/Austro/Lycoming engines | Sept 28, 2012 |
| SL47 (.pdf, 40k) |
Blade Seal Installation during Propeller Assembly | Jan 14, 2013 |
| SL48 |
i.p. | |
| SL49 R9 (.pdf, 1,5MB) |
Re-Positioning of de-ice cables to improve long time wear. | Feb 06, 2018 |
| SL50 R2 (.pdf, 749kb) |
Pitch change pin inspection during next overhaul or repair. | March 20, 2023 |
| SL51 R1 (.pdf, 53kb) |
Installation of Protective Erosion Tape on De-Ice Boots Affected Propeller: MTV-27-1-E-C-F-R(G)/CFRL250-55b Affected Aircraft: DO228 series |
March 17, 2016 |
| SL51-1 R4 (.pdf, 60kb) |
Installation of Protective Erosion Tape on De-Ice Boots |
February 27, 2024 |
| SL52 R1 |
Optimum Installation of the Christen 801 Series Inverted Oil System in Combination with MT-Propellers. Affected Propeller: MTV-12-B-C/C183-17e Affected Aircraft: Grob G115E For special customer only |
May 29, 2013 |
| SL52-1 R1 (.pdf, 53kb) |
Installation of P-447 Accumulator in Combination with MT-Propellers Affected Propeller: MTV-12-B-C/C183-17e Installed per EASA STC 10043263 |
July 30, 2015 |
| SL52-2 (.pdf, 53kb) |
Removal of Inner Propeller Spring on Counterweighted MT-Propeller Affected Propeller: MTV-12-B-C/C183-17e Installed per EASA STC 10043263 |
Nov 07, 2013 |
| SL53 R4 (.pdf, 53kb) |
Modification of Fluid Deice System Affected Propeller:MTV-14-D/195-30b Affected Aircraft: Cirrus SR22-( ) with Spinner Assy P-320-2 |
Aug 28, 2015 |
| SL54 (.pdf, 53kb) |
Replacement of parts during overhaul or repair Affected Propeller: MTV-27-1-N-C-F-R(G)-J with blade type CFR285-82 or CFRL 285-82 Affected Aircraft: Jetstream 41 |
July 25, 2013 |
| SL55 R5 |
Installation of Protective Polyurethane Tape on MTV-5-()/-27-() Hovercraft
blades Affected Propeller: MTV-5-1-W-C-R(H)/CRLD199-117 MTV-27-1-X-C-R(H)/CRLD218-121d MTV-27-1-V-C-R(H)/CRLD258-121b MTV-27-1-YZ-C-R(H)-J/CRRD350-132a MTV-28-2-AZ-R(H)/CRRD358-160 Affected Vehicle: Griffon Hovercraft (This service Letter overwrites 55A) |
Nov 13, 2015 |
| SL56 R1 (.pdf, 53kb) |
General Information for MT-Propeller trained Mechanics
Possible Action against Dynamic Vibration on MT-Propeller Affected Propeller: MTV-27-( ), MTV-25-( ), MTV-16-( ), MTV-5-( ) |
Dec 21, 2018 |
| SL57 R1 (.pdf, 53kb) |
Affected Propeller: MTV-27-1-N-C-F-R(G)-J/ CFR285-82 / CFRL285-82 with spinner assembly P-1152-( ) installed on Jetstream 41 Manufactured / overhauled or repaired before 12/2013. |
March 17, 2015 |
| SL58 (.pdf, 176kb) |
Removal of inner propeller spring on counterweighted MT-Propeller Affected Propeller: MTV-14-B-C/C190-17 on EXTRA 300 series, Cap 231/EX/232 Series |
Aug 07, 2014 |
| SL59 (.pdf, 176kb) |
RCounterweight body crack inspection (Magnetic Particle Inspection) Affected propeller: All counterweighted variable Pitch MT-Propeller |
Feb 19, 2015 |
| SL60 (.pdf, 176kb) |
Moficiation of Counterweight Body A-1496-(C )Y( ) Affected Propeller: MTV-16-1-N-C-F-R(P)/ CFRLD265-65 MTV-16-1-N-C-F-R(P)/ CFRLD280-65 |
June 11, 2015 |
| SL61 (.pdf, 488kb) |
Additional Secure of Motor Screws on Electric Motor P-820-( ) | Aug 04, 2015 |
| SL62 R1 (.pdf, 653kb) |
Modification of the Starter Gear installed on Lycoming Engine for Electrically Controlled Variable Pitch Propeller Systems Affected Propellers: MTV-7-( ),MTV-10-( ), MTV-18-( ), MTV-23-( ) | Sept 13, 2021 |
| SL63 (.pdf, 653kb) |
Inspection of Beta Valve P-846 / Prop Front O-Ring for possible Oil Leak Installed on RR250 engines Affected Propellers: MTV-5-1-D-C-F-R(A)/CFR210-56 |
Nov 02, 2016 |
| SL64 (.pdf, 653kb) |
Alternative Positioning of MT-Propeller Identification Label
Affected Propellers: All MTV-Propeller which have no identification label on the propeller blade |
Feb 2, 2017 |
| SL65 R1 (.pdf, 340kb) |
Inner bearing Halves Inspection (Visual Inspection) Affected Propellers: All Hydraulically and Electrically Controlled Variable Pitch MT-Propeller As sharp edges were found on the split line of the inner bearing halves. (For certified service stations only, please log in) |
March 15, 2021 |
| SL66 R1 (.pdf, 155kb) |
Outer Blade Bearings MTV-33, MTV-34, MTV-36 | March 20, 2023 |
| SL67 (.pdf, 270kb) |
How to use the Anti Icing Liquid ICEX II (Goodrich) on MT-Propeller Blades | Sept 26, 2017 |
| SL68 (.pdf, 320kb) |
Replacement of Electric Servo Motor Type 34L / 34LT / 35 NT Installed on Electrically Controlled Variable Pitch MT - Propellers |
Aug 24, 2017 |
| SL69 (.pdf, 250kb) |
Readjustment of the Low Pitch Stop Rods or Replacement of the Piston Extension P/N A-1020-A-42-L installed on MTV-9-( )-( )-R(M) propeller during the next Repair or Overhaul | Feb 15, 2018 |
| SL70 (.pdf, 83kb) |
Propeller Snap Ring Inspection MTV-33-( ) and MTV-34-( ) Propeller | Sept 10, 2018 |
| SL71 R3 (.pdf, 100kb) |
Governor jam relieve, adjustment of MIN and MAX RPM settings P-853-16 and -877-16 | July 01, 2020 |
| SL72 R3 (.pdf, 360kb) |
Application of Expoxy Filler on Natural Composite Blades | March 06, 2024 |
| SL73 R1 (.pdf, 360kb) |
Optional installation of the blade bearing A-1540 | March 20,2023 |
| SL74 (.pdf, 200kb) |
Propeller Carbon Blocks C-131-3 used for MT-Propellers installed on PT6A-( ) engines | Feb 25, 2021 |
| SL75 (.pdf, 165kb) |
Piston exchange for MTV-47-( ) series Issue Date | June 14, 2023 |
| SL76 (.pdf, 200kb) |
Thicker Erosion Protection Sheaths on Fixed Pitch Propellers | Aug 18, 2021 |
| SL77 (.pdf, 110kb) |
Length of the spinner fixture screws installed on spinner assembly P/N P-1741-( ) | March 17, 2022 |
| SL78 (.pdf, 486kb) |
PT-6 Governor Reverse RPM-Limitation Check (Py Air-Bleed Function) Affected Propeller: MTV-16-1-E-C-F-R(P)/CFR240-55( ) on PT6-( ) engines | May 02, 2022 |
| SL79 R1 (.pdf, kb) |
New PTFE Backup Rings Affected Propeller: All MT propellers MTV-( )-R(G), -R(P), -R(A), -R(W) -R(GE), installed on Garrett / Pratt & Whitney / Allison / Walter / GE engine applications |
April 10, 2024 |
| SL80 (.pdf, kb) |
MT-Propeller New Piston O-ring for Turboprop Installations Affected Propeller: All MT propellers MTV-( )-R(G), -R(P), -R(A), -R(W) -R(GE), installed on Garrett / Pratt & Whitney / Allison / Walter / GE engine applications OBSOLETE (replaced by Service Bulletin No. 40) | |
| SL81 (.pdf, kb) |
Possible Grease Leak and High Friction of Blade Preload after or during Assembly Affected O-rings: All blade O-rings, C-057-( )-R, all models of a certain production batch. | November 14, 2022 |
| SL82 (.pdf, kb) |
Instructions for grounding of non-insulated electrically controlled governor Governor models affected: P-853-16, P-877-16. | April 29, 2024 |