Bristell B23-915
Airplane Maintenance Manual
supplement
Chapter 72
Issue: 09.12.2021
Chapter 72 Page 3
Coolant Type
Ethylene-glycol based with 50% water dilution acc. current version of
Rotax Service Instruction SI-915-001.
NOTICE
The conventional (glycol/water) coolant may not be mixed with
coolant concentrate (propylene glycol) or with additives.
Modified parts
Following parts of Rotax IPC are modified by BRM:
-
Expansion tank
(ROTAX PN 922664) -> 71B520020N
-
Water cooler
(ROTAX PN 997086) -> 71B520010N
-
Intercooler
(ROTAX PN 888962) -> 71B550050N
-
Muffler
(ROTAX PN 979475) -> 71B540001N
For replacement of these parts contact the manufacturer BRM Aero
NOTICE
Modified parts can not be ordered through ROTAX but are custom
BRM parts. Replacement engines must be modified according to BRM
information, see Appendix drawing 71B500000N sheet 5/5