ASW
27 Maintenance Manual
Rev.No / Date
Sig
Author
Date
Page
No.
TN 11
26.06.07
mg
Juw/GW
20.01.97
4.2 Special Servicing Procedures and Equipment subject to Service
Life Limitations
Special Servicing Procedures
At regular intervals of 5 years, the sealing rings and groove sealing rings of the
water ballast valves must be checked, and replaced if required (see Fig. 2.4-1).
At regular intervals of 6 years the brake line hose of the hydraulic wheel brake
must be replaced. Should this hose be found to be in good condition, it need not
be replaced, on condition that its condition is checked at least every 100 flying
hours.
Equipment subject to Service Life Limitations
Tow Releases
The tow release fitted at the C.G. is model TOST "Europa G 88" or "G 72" or
"G 73" respectively ,
The aerotow release is either the model TOST “E 22” (if installed at the tip of the
fuselage nose) or one of the models TOST "E 85" or "E 72" or "E 75" (if installed
between pedals and stick).
The above TOST tow releases must comply with the service life limitations
between inspections as laid down in their respective authorized release certifi-
cates.
The relevant "Operations and maintenance instructions" issued by the manufac-
turer TOST must be complied with.
4.4
