M601E

M601E ENGINE

M601E/1a
Changes to the Maintenance Manual for WALTER M601B, B-1, D, E, Z engines.
Nov 3, 1987

M601E/2a
Changes to the Maintenance Manual for M601E engines in response to their operation.
Nov 4,1987

M601E/3a
Use of modified metallic containers for M601E engines with secured exhaust bends. Unification and refinement of M601E engine documentation in Czech and Russian in response to critical remarks on operational experience.
Jan 19, 1988

M601E/4a
Use of adjacent cards „Engine Entered Service".
May 1, 1988

M601E/5a
The total number of landings recorded in the engine Log Book and considered at each removal of the engine from aircraft.
May 1, 1988

M601E/6a
N25F-3 spark plugs.
May 18, 1989

M601E/7a
The 14 UA 41/R spark gap arc-over voltage control in the JT 607 C and JT 607 D systems.
Jan 1, 1989

M601E/8a
Issue of M601-P10-12B, Appendix 2: Regulations governing the storage, preservation and de-preservation of M601 engines in operation.
Annex 1: Instruction Sheet for the replacement of oil permitted for use in
operation by M601 Engine Specifications.
Aug 8, 1989

M601E/10a
Replacement of M601-3220.6 propeller turbine discs of certain numbers at major overhaul of M601E engines. Engine operation permitted for a given period until major overhaul in full accordance with the Flight Operation Manual.
Feb 1, 1990

M601E/12a
Use of new oil kinds in M601D, E, and Z engines.
Jan 23, 1991

M601E/13a
Checking the hardness of LUN 6290.04-8 pump driving gears.
Jan 4, 1991

M601E/14a
Maintenance of the LUN 2201.03-8 ignition device. Device maintenance and spark plug replacement is necessary on completion of every 300 hours of service operation.
Sep 9, 1992

M601E/15a
Supplement of the list of preserving oils by KONKOR 103 (OK-5A) and specification of the mixture rate with the fuel (Aviation Kerosene) for engine preservation into the WALTER M601 Flight Operation Manuals.
Dec 18, 1992

M601E/16a
Determination of the fixed upper limit of the interturbine temperature and the gas generator speed at the maximum contingency rating.
Modification of the boundary-line of the flight altitude at which the engine control lever is to be displaced for acceleration from flight idling conditions in period of 1 sec and 6 sec.
Complement of the oil pressure and of the fuel temperature into the "WALTER M601E Turboprop Operation Manual" and the "WALTER M601E Flight Operation Manual".
Complement of the data on the service life into the "WALTER M601E MAINTENANCE MANUAL".
Mar 9, 1993

M601E/17a
Supplementing of the WALTER M601E Power Rating table in the M601E Installation Manual, issued on Jan 1, 1993.
Mar 18, 1994

M601E/18a
Including ultimate mount load to the M601E Installation Manual
(date of issue Jan 1, 1993) and M601F Installation Manual
(date of issue Jan 1, 1993).
Sep 22, 1994

M601E/19a
Cancellation of the formerly permitted gas generator idle speed of 58 to 59 %.
Sep 28, 1994

M601E/20a
Limited life of gas generator turbine blades Dwg. No. M601-3372.6
of WALTER M601E engines shown in the enclosed list.
Oct 23, 1996

M601E/21a
Addition to the WALTER M601E Engine Maintenance Schedule
concerning oil change after 12 months.
Dec 17, 1996

A M601E/23a
Exchange of relief valve for fuel control unit LUN 6590.03, LUN 6590.04, LUN 6590.05, LUN 6590.06.
Oct 5, 2000

M601E/24a
Expiration of validity of the “Flight Operation Manual” and of the “Operation Manual”. Both manuals are replaced by unified revised manual.
Oct 10, 2000

M601E/25a
Replacement CHAMPION CH34630 spark plugs.
Feb 26, 2001

M601E/26a
Introduction of the section “Airworthiness Limitations” into the “Maintenance Manual”.
Apr 20, 2001

M601E/27a
Improvement of the Electric Contact Between Spark Plug and Ignition Cable of the UNISON Ignition Exciter.
Jan 10, 2002

M601E/28a
Inspection of condition of the M601-264.7 combustion chamber liner in flight operation
Mar 3, 2003

M601E/29a
Replacement of the M601-264.7 Combustion Chamber Inner Liner
Mar 17, 2003

M601E/30a
Operation manual, 2nd Revised Edition, No 982404,
Nov 11, 1999. May 12, 2003

M601E/31a
Reduction in Propeller Rotational Speed
Aug 11, 2004

M601E-11 ENGINE

M601E-11/1a
Termination of validity of the Operation and Installation Manuals and replacing by revised editions.
Oct 6, 1997

M601E-11/2a
Revision of the Airworthiness Limitations Section of the Maintenance Manual.
Oct 6, 1997

M601E-11/3a
Revision of the Airworthiness Limitations Section of the Maintenance Manual.
Apr 9, 1998

A M601E-11/4a
Exchange of relief valve for fuel control unit LUN 6590.03, LUN 6590.04, LUN 6590.05, LUN 6590.06.
Oct 5, 2000

M601E-11/5a
Replacement CHAMPION CH34630 spark plugs.
Feb 26, 2001

M601E-11/6a
The “Operation Manual” is supplemented by WALTER M601E-11S and WALTER M601E-11AS engine models equipped with single acting propellers.
Mar 30, 2001

M601E-11/7a
Improvement of the Electric Contact Between Spark Plug and Ignition Cable of the UNISON Ignition Exciter.
Jan 10, 2002

M601E-11/8a
Increase of take-off power of the WALTER M601E-11A and WALTER M601E-AS engines and addition of ROYCO oil into the "Operation Manual" (Manual Part No 0982406, third revised edition, issued March 30, 2001)
Jan 22, 2003

M601E-11/9a
Reduction in Propeller Rotational Speed
Aug 11, 2004

M601E-11/10a
Addition tables of operation limits if equipped with propeller of diameter smaller than 2185 mm / 86 cm
July 13, 2006

M601E-11S ENGINE

M601E-11S/1a
The “Operation Manual” is supplemented by WALTER M601E-11S and WALTER M601E-11AS engine models equipped with single acting propellers.
Mar 30, 2001

M601E-11S/2a
Increase of take-off power of the WALTER M601E-11A and WALTER M601E-AS engines and addition of ROYCO oil into the "Operation Manual" (Manual Part No 0982406, third revised edition, issued March 30, 2001)
Jan 22, 2003

M601E-11S/3a
Reduction in Propeller Rotational Speed
Aug 11, 2004

M601E-11S/4a
M601E-11S/AS BETA CONTROL MODIFICATION
Oct 7, 2004

M601E-11S/5a
M601E-11S BETA CONTROL MODIFICATION
Jan 10, 2005

M601E-11A ENGINE

M601E-11A/1a
The “Operation Manual” is supplemented by WALTER M601E-11S and WALTER M601E-11AS engine models equipped with single acting propellers.
Mar 30, 2001

M601E-11A/2a
Increase of take-off power of the WALTER M601E-11A and WALTER M601E-AS engines and addition of ROYCO oil into the "Operation Manual" (Manual Part No 0982406, third revised edition, issued March 30, 2001)
Jan 22, 2003

M601E-11A/3a
Change in engine identification plate due to increased takeoff power of WALTER M601E-11A engine model.
Jan 7, 2004

M601E-11A/4a
Reduction in Propeller Rotational Speed
Aug 11, 2004

M601E-11AS ENGINE

M601E-11AS/1a
The “Operation Manual” is supplemented by WALTER M601E-11S and WALTER M601E-11AS engine models equipped with single acting propellers.
Mar 30, 2001

M601E-11AS/2a
Increase of take-off power of the WALTER M601E-11A and WALTER M601E-AS engines and addition of ROYCO oil into the "Operation Manual" (Manual Part No 0982406, third revised edition, issued March 30, 2001)
Jan 22, 2003

M601E-11AS/3a
Reduction in Propeller Rotational Speed
Aug 11, 2004

M601E-21 ENGINE

M601E-21/1a
Limited life of gas generator turbine blades Dwg. No. M601-3372.6 of WALTER M601E-21 engines shown in the enclosed list.
Oct 23, 1996

A M601E-21/2a
Exchange of relief valve for fuel control unit LUN 6590.03, LUN 6590.04, LUN 6590.05, LUN 6590.06.
Oct 5, 2000

M601E-21/3a
Expiration of validity of the “Flight Operation Manual” and of the “Operation Manual”. Both manuals are replaced by unified revised manual.
Oct 10, 2000

M601E-21/4a
Replacement CHAMPION CH34630 spark plugs.
Feb 26, 2001

M601E-21/5a
Improvement of the Electric Contact Between Spark Plug and Ignition Cable of the UNISON Ignition Exciter.
Jan 10, 2002

M601E-21/6a
Inspection of condition of the M601-264.7 combustion chamber liner in flight operation
Mar 3, 2003

M601E-21/7a
Replacement of the M601-264.7 Combustion Chamber Inner Liner
Mar 17, 2003

M601E-21/8a
Operation manual, 2nd Revised Edition, No 982404
May 12, 2003