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Oct. 24, 2008
 


Service Letters

download this list as .pdf file

 #
Content
 Date of Issue
SL 1
(.pdf, 12k)
Replacement 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
SL 2
(.pdf, 9k)
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
SL 3
(.pdf, 10k)
Modification of the pitch change pin location. Affected Propellers: All Constant Speed Propellers.
May 12,
1999
SL 4
Introduction of DF type O-Rings. Affected Propellers:
All Constant Speed Propellers
.
Replaced by Service Letter No. 14
-------
SL 5
(.pdf, 9k)
Replacement 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
SL 6A
(.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
SL 7A
(.pdf, 19k)
Replacement of screws M3x10 by M3x12. Affected Propellers: All Electric Constant Speed Propellers
March 5,
2003
SL 8
(.pdf, 9k
)
Introduction of Resin A 20 + Hardener B20
Nov 29,
1999
SL 9A
(.pdf, 9k)
Introduction of Resin A 20 + Hardener B20
Aug 27 ,
2001
SL 10
(.pdf, 16k)
Teardown inspection at 1/3 TBO. Affected Propellers:
All Variable Pitch Aerobatic Propellers
.
March 1,
2000
SL 11
(.pdf, 9k)
Installation of standard electric pitch change motor
Affected Propellers:
All Electrically Controlled MTV-Propellers
April 5,
2000
SL 12
(Internal)
-
SL 13
(.pdf,8k)
Painting of Counterweights
July 11,
2002
SL 14D
(.pdf, 14k)

New blade seals.
Affected Propellers:
All MTV-( ) Constant Speed Propellers.

March 20,
2003
SL 15
(.pdf, 106k)
New counterweights.
Affected Propellers:
All MTV- propellers having the new
counterweights installed
.
Nov 27,
2000
SL 16
(.pdf, 9k)
Erosion Sheath.
Affected Propellers:
All Fixed Pitch Propellers
.
Feb 1,
2001
SL 17B
(.pdf, 13k)
Replacement of MTV-9/ -12/ -14 hub.
Affected Propellers: serial numbers up to 97xxx.
March 8,
2006
SL 18B
(.pdf, 70k)
Installation of an Additional PTFE back up ring.
Affected Propellers: MTV-9-( ).
July 23 ,
2008
SL 19
(.pdf, 9k)
New Control Unit P-120-A
(beginning with serial no. WA01-XXX)
Oct 24,
2001
SL 20
(.pdf, 10k)
Replacement of the front plate.
Affected Propellers:

All MTV-9-/MTV-12-/MTV-14-/MTV-16-( )
built after March 2001 (MTV-16: November 2001)
.
Dec 17,
2001
SL 21B
(.pdf, 6k)
Replacement of Aeroshell No. 5 by MT 2 Propeller Grease. Affected Propellers: All Variable Pitch Propellers.
Nov 4,
2002
SL 22J
(.pdf, 71k)
Leading edge installation.
MT-Propeller Constant Speed Propeller Blades of types:
C190-18b, C193-18b, C198-25,
(C)188-59, (C)183-59, (C)180-59, (C)188-17e (-A),
Affected Propellers: MT-Propeller Constant Speed Propeller
Oct 8,
2008
SL 23C
(.pdf, 14k)
Grease Leakage Problem.
Affected Propellers:
MTV-12-B/180-17 installed
on Diamond DA40 with Lyc. IO-360-M1A
.
March 21,
2003
SL 24A
(.pdf, 22k)
Torque of Check Nuts and Slotted Nuts.
Affected Propellers: All hydraulic MTV-Propellers.
March 7,
2003
SL 25
(.pdf, 20k)
Replacement of return spring, part no.
A-085 by new return spring part no. D-389-K
Jan 28,
2004
SL 26A
(.pdf, 72k)
Front Plate of all hydraulic MTV-Propeller
(except dual acting Walter Reverse Systems R(W)) manufatured between Augst 1999 up to October 2004
Nov 12,
2004
SL 27
(.pdf, 17k)
Cure date and shelf live of MT-Propeller O-Rings
Jan 31,
2005
SL 28
(.pdf, 36k)
Installation of oil cooler scoop P/N 763-8035-1/MT
on Cessna U206 , TU206G
(with Soloy Turbine PAC, FAA STC SA 2353 NM)
equipped with 5-blade
MTV-5-1-E-C-F-R(M)/CFR220-54 propeller
July 3,
2006
SL 29C
(.pdf, 51k)
Leading Edge Installation
Installed on a Husky A-1 () Propeller MTV-15-B/210-58
and MTV-15-B/205-58
March 19,
2007
SL 30A
(.pdf, 54k)
Fluid De-Ice Boot Installation on MT-Propeller Composite Blades
Sept. 17,
2007
SL 31A
(.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
SL 32
(.pdf, 1.9MB)

MT-, MTE and MTV-Propellers with natural Composite Blades.
Only mechanics with a valid MT-Propeller Trainig Certificate are authorized to carry out the job as described in this Service Letter

April 14, 2008
SL 33
(.pdf, 71k)
Shrouded Propeller Installation
(if not enough clearance between propeller and shroud)
August 26, 2008
SL 34
(.pdf, 116k)
MTV-9-B-S/198-58B installed on Cessna 182 (SMA-Application) with Propeller hub A-926-2-( )
Issue Date: 20th October 2008
Oct 20, 2008

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