M601Z

M601Z ENGINE

M601Z/1b
Not issued.

M601Z/2b
Not issued.

M601Z/3b
„Maintenance Manual" - data revision.
Jul 1, 1987

M601Z/4b
Life and TBO extension for M601Z engine.
Jun 1, 1989

M601Z/5b
Not issued.

M601Z/6b
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

M601Z/7b
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

M601Z/8b
Features of the B3V oil and of the "Kaptax" antiwear agent when used in all models of the M601 engine.
Nov 23, 1995

M601Z/9b
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

M601Z/10b
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

M601Z/11b
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

M601Z/12b
Compressor recovery wash concerning all WALTER M601 engine models
in operation.
Nov 1, 1997

M601Z/14b
Possibility of replacement of the LUN 2201.03-8 ignition unit by the UNISON P/N 9049765-1 ignition unit.
Dec 2, l998

M601Z/15b
Possibility of the 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

M601Z/16b
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Sep 5, 2002

M601Z/17b
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

M601Z/16b R1
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Dec 6, 2003

M601Z/18b
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
Aug 11, 2004

M601Z/18b R 1
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
Mar 11, 2005

M601Z/19b
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

M601Z/20b
Issue of the Type Certificate EASA.E.070 for WALTER M601 turbopropeller series engines
May 13, 2005

M601Z/21b
Unification of used Fuel Control Units and Fuel Pumps
Nov 7, 2005

M601Z/18b R 2
A) Engine Air Path Washing for Salt Deposit Removal.
B) Compressor Recovery Wash
Feb 3, 2006

M601Z/21b R 1
Unification of used Fuel Control Units and Fuel Pumps
Apr 5, 2006