M601D

M601D ENGINE

M601D/1b
Metallic containers entered service.
Nov 30, 1983

M601D/2b
The M601 engine family: Possible causes of unsuccessful starts.
Oct 1, 1984

M601D/3b
Interchangeability of the fuel system devices, instruments, etc. in various M601 engine versions.
Mar 31, 1985

M601D/8b
Parts replacements at overhaul and in operation of M601B, B-1, D engines.
Feb 19, 1987

M601D/9b
Checking the tightness of the fuel control assembly at extremely low temperatures.
Dec 15, 1988

M601D/11b
Extension of the current two-year preservation period to three years for engines delivered to the U.S.S.R .
Jan 9, 1991

M601D/12b
Observance of general principles underlying the fuel economy in the former U.S.S.R .
Feb 12, 1992

M601D/13b
Possibilities of extending of the Time Between Overhauls (TBO) determined by number of years for all M601 engine models which have not yet consumed TBO determined by number of flight hours and/or number of cycles (equivalent cycles).
Nov 14, 1994

M601D/14b
Cancellation of monitoring and recording in "Engine Log Book" of the 20 % of the engine ground operation period. This concerns all M601 models since new edition of the "Engine Log Book" has been issued.
Aug 31, 1995

M601D/15b
Features of the B3V oil and of the "Kaptax" antiwear agent when used in all models of the M601 engine.
Nov 23, 1995

M601D/16b
Change in name of the "WALTER" aircraft engine manufacturer from former MOTORLET a.s. to traditional WALTER ENGINES a.s. Support of operation of used engines of the following models: WALTER M601A, M601B, M601D, M601D-1, M601E and M601Z. Users from the former Soviet Union and countries of Eastern Europe have been selling these engines either as individual engines or together with L 410, Z37T, PZL-106BT-601 airplanes.
Mar 29, 1996

M601D/17b
Possibilities of extending of the Time Between Overhauls (TBO) determined by number of years for all flight hours and/or number of cycles (equivalent cycles).
Mar 29, 1996

M601D/18b
Edition of "Instruction for oil brand change" which forms Supplement No 1B to the "Regulation for equipment, preservation, storage and de-preservation of WALTER M601 engines, accessories and spare parts", Appendix 2
of the M601-P10-12B Regulation.
May 13, 1996

M601D/19b
Extending of the Time between Overhauls (TBO) for WALTER M601D engines form 1500 hours up to 1800 hours, No. of cycles remains unchanged, i.e. 2250.
Aug 19, 1996

M601D/20b
Compressor recovery wash concerning all WALTER M601 engine models in operation.
Nov 1, 1997

M601D/22b
Possibility of replacement of the LUN 2201.03-8 ignition unit
by the UNISON P/N 9049765-1 ignition unit.
Dec 2, l998

M601D/23b
Possibility of extension of operation time between replacement of the M601-529.7 filtration cartridge. Extension of operation life of the N 25 F-3 spark plug according to the technical condition.
Feb 11, 2000

M601D/24b
Modification of the M601-418.7, M601-419.7exhaust nozzle.
Apr 28, 2000

M601D/25b
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Sep 5, 2002

M601D/26b
The Kathon FP 1.5 biocide can used as an ingredient to the fuel as far as the microbial contamination of the fuel has been found out. The ROYCO TURBINE OIL 560 can be used at all WALTER M601 engine models.
Oct 18, 2002

M601D/27b
Changes in operating limits and deviations from the standard equipment of WALTER M601D engine S/N 934001.
May 19, 2004

M601D.28b
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
August 11, 2004

M601D/28b R 1
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
Mar 11, 2005

M601D/29b
Transfer of the WALTER M601 engine Type Certificates and all activities and responsibilities in the sector of the civil aviation from WALTER a.s. to WALTER ENGINES a.s.
Apr 28, 2005

M601D/30b
Issue of the Type Certificate EASA.E.070 for WALTER M601 turbopropeller series engines
May 13, 2005

M601D/31b
Unification of used Fuel Control Units and Fuel Pumps
Nov 7, 2005

M601D/28b R 2
A) Engine Air Path Washing for Salt Deposit Removal.
B) Compressor Recovery Wash
Feb 3, 2006

M601D/31b R 1
Unification of used Fuel Control Units and Fuel Pumps
Apr 5, 2006

M601D-1 ENGINE

M601D-1/1b
Possibilities of extending of the Time Between Overhauls (TBO) determined by number of years for all M601 engine models which have not yet consumed TBO determined by number of flight hours and/or number of cycles (equivalent cycles).
Nov 14, 1994

M601D-1/2b
Cancellation of monitoring and recording in "Engine Log Book" of the 20 % of the engine ground operation period. This concerns all M601 models since new edition of the "Engine Log Book" has been issued.
Aug 31, 1995

M601D-1/3b
Features of the B3V oil and of the "Kaptax" antiwear agent when used in all models of the M601 engine.
Nov 23, 1995

M601D-1/4b
Change in name of the "WALTER" aircraft engine manufacturer from former MOTORLET a.s. to traditional WALTER ENGINES a.s. Support of operation of used engines of the following models: WALTER M601A, M601B, M601D, M601D-1, M601E and M601Z. Users from the former Soviet Union and countries of Eastern Europe have been selling these engines either as individual engines or together with L 410, Z37T, PZL-106BT-601 airplanes.
Mar 29, 1996

M601D-1/5b
Possibilities of extending of the Time Between Overhauls (TBO) determined by number of years for all flight hours and/or number of cycles (equivalent cycles).
Mar 29, 1996

M601D-1/6b
Edition of "Instruction for oil brand change" which forms Supplement No 1B to the "Regulation for equipment, preservation, storage and de-preservation of WALTER M601 engines, accessories and spare parts", Appendix 2
of the M601-P10-12B Regulation.
May 13, 1996

M601D-1/7b
Compressor recovery wash concerning all WALTER M601 engine models in operation.
Nov 1, 1997

M601D-1/9b
Possibility of replacement of the LUN 2201.03-8 ignition unit by the UNISON P/N 9049765-1 ignition unit.
Dec 2, l998

M601D-1/10b
Possibility of extension of operation time between replacement of the M601-529.7 filtration cartridge. Extension of operation life of the N 25 F-3 spark plug according to the technical condition.
Feb 11, 2000

M601D-1/11b
Modification of the M601-418.7, M601-419.7 exhaust nozzle.
Apr 28, 2000

M601D-1/12b
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engines model.
Sep 5, 2002

M601D-1/13b
The Kathon FP 1.5 biocide can be used as an ingredient to the fuel as far as the microbial contamination of the fuel has been found out. The ROYCO TURBINE OIL 560 can be used at all WALTER M601 engine models.
Oct 18, 2002

M601D-1/14b
Extension of the time between overhauls (TBO) for WALTER M601D-1 engines S/N 851011 and 883015 from 1500 to 1800 hours.
Feb 24, 2003

M601D-1.16b
Extension of the TBO from 1500 hrs up to 1800 hrs for the following WALTER M601D-1 engines: S/N 851 083, 874 018, 881 022, 892 014, 893 010, 912 020
Sep 17, 2004

M601D-1/15b R1
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
Mar 11, 2005

M601D-1/15b R2
A) Engine Air Path Washing for Salt Deposit Removal.
B) Compressor Recovery Wash
Feb 3, 2006

M601D-1/17b
Transfer of the WALTER M601 engine Type Certificates and all activities and responsibilities in the sector of the civil aviation from WALTER a.s. to WALTER ENGINES a.s.
Apr 28, 2005

M601D-1/18b
Issue of the Type Certificate EASA.E.070 for WALTER M601 turbopropeller series engines
May 13, 2005

M601D-1/19b
Unification of used Fuel Control Units and Fuel Pumps
Nov 7, 2005

M601D-1/15b R 2
A) Engine Air Path Washing for Salt Deposit Removal.
B) Compressor Recovery Wash
Feb 3, 2006

M601D-1/19b R 1
Unification of used Fuel Control Units and Fuel Pumps
Apr 5, 2006

M601D-11 ENGINE

M601D-11/1b
Possibility of extension of operation time between replacement of the M601-529.7 filtration cartridge. Extension of operation life of the N 25 F-3 spark plug according to the technical condition.
Feb 11, 2000

M601D-11/2b
Modification of the M601-418.7, M601-419.7 exhaust nozzle.
Apr 28, 2000

M601D-11/3b
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Sep 5, 2002

M601D-11/4b
The Kathon FP 1.5 biocide can be used as an ingredient to the fuel as far as the microbial contamination of the fuel has been found out. The ROYCO TURBINE OIL 560 can be used at all WALTER M601 engine models.
Oct 18, 2002

M601D-11/5b
A) Engine Air Path Washing for Salt Deposit Removal. B) Optional Compressor Recovery Wash
August 11, 2004

M601D-11NZ ENGINE

M601D-11NZ/1b
Possibility of extension of operation time between replacement of the M601-529.7 filtration cartridge. Extension of operation life of the N 25 F-3 spark plug according to the technical condition.
Feb 11, 2000

M601D-11NZ/2b
Modification of the M601-418.7, M601-419.7 exhaust nozzle.
Apr 28, 2000

M601D-11NZ/3b
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Sep 5, 2002

M601D-11NZ/4b
The Kathon FP 1.5 biocide can be used as an ingredient to the fuel as far as the microbial contamination of the fuel has been found out. The ROYCO TURBINE OIL 560 can be used at all WALTER M601 engine models.
Oct 18, 2002

M601D-11NZ/5b
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
August 11, 2004

M601D-11/5b R 1
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery
Wash Mar 11, 2005

M601D-11/6b
Transfer of the WALTER M601 engine Type Certificates and all activities and responsibilities in the sector of the civil aviation from WALTER a.s. to WALTER ENGINES a.s.
Apr 28, 2005

M601D-11/7b
Issue of the Type Certificate EASA.E.070 for WALTER M601 turbopropeller series engines
May 13, 2005

M601D-11/8b
Unification of used Fuel Control Units and Fuel Pumps
Nov 7, 2005

M601D-11/5b R 2
A) Engine Air Path Washing for Salt Deposit Removal.
B) Compressor Recovery Wash
Feb 3, 2006

M601D-11/8b R 1
Unification of used Fuel Control Units and Fuel Pumps
Apr 5, 2006

M601D-2 ENGINE

M601D-2/1b
Possibility of extension of operation time between replacement of the M601-529.7 filtration cartridge. Extension of operation life of the N 25 F-3 spark plug according to the technical condition.
Feb 11, 2000

M601D-2/2b
Modification of the M601-418.7, M601-419.7 exhaust nozzle.
Apr 28, 2000

M601D-2/3b
Extending of the time between overhauls (TBO) for WALTER M601D-2 engines S/N 882004 and 891001 from 1500 hrs to 1800 hrs.
Jun 27, 2002

M601D-2/4b
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Sep 5, 2002

M601D-2/5b
The Kathon FP 1.5 biocide can be used as an ingredient to the fuel as far as the microbial contamination of the fuel has been found out. The ROYCO TURBINE OIL 560 can be used at all WALTER M601 engine models.
Oct 18, 2002

M601D-2/6b
A) Engine Air Path Washing for Salt Deposit Removal. B) Optional Compressor Recovery Wash
August 11, 2004