M601T

M601T/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

M601T/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

M601T/3b
Features of the B3V oil and of the "Kaptax" antiwear agent when used in all models of the M601 engine.
Nov 23, 1995

M601T/4b
Change in name of the "WALTER" aircraft engine manufacturer from former MOTORLET a.s. to traditional WALTER 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

M601T/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

M601T/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

M601T/7b
Compressor recovery wash concerning all WALTER M601 engine models in operation.
Nov 1, 1997

M601T/8b
Not issued.

M601T/9b
Possibility of replacement of the LUN 2201.03-8 ignition unit by the UNISON P/N 9049765-1 ignition unit.
Dec 2, l998

M601T/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

M601T/11b
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Sep 5, 2002

M601T/12b
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

M601T/11b R1
Cancellation of service life limits and of fixed number of overhauls at all WALTER M601 engine models.
Dec 6, 2003

M601T/13b
Possibility of application of Šampon M601 shampoo for preparation of the compressor washing agent.
Feb 9, 2004

M601T/14b
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
Aug 11, 2004

M601T/14b R 1
A) Engine Air Path Washing for Salt Deposit Removal.
B) Optional Compressor Recovery Wash
Mar 11, 2005

M601T/15b
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

M601T/16b
Issue of the Type Certificate EASA.E.070 for WALTER M601 turbopropeller series engines
May 13, 2005

M601T/14b R 2
A) Engine Air Path Washing for Salt Deposit Removal.
B) Compressor Recovery Wash
Feb 3, 2005