Bristell B23-915
Airplane Maintenance Manual
supplement
Chapter 05
Issue: 09.12.2021
Chapter 05 Page 7
05-20-04 Annual Periodical Inspection or
Inspection after 100 Flight Hours
Aircraft S/N.:
…………………
Total flight hours:
…………
Registration mark:
…………………
No. of takeoffs:
…………
Prescribed works
Made by
Checked by
AIRFRAME
Preparation
Perform aircraft daily inspection and engine start up, run up
and shut down per AFM. Check all related functions.
Check function of fuel selector valve. Do NOT shut-off the
engine by fuel starvation.
If glider towing system installed:
Visually inspect all rivet connections of the tow hook
structure to the fuselage structure, especially under the
aerodynamic fairing.
Visually inspect for occurrence of cracks on the tow
system steel frame and welds.
Inspect and check tightening and securing of bolts on the
tow hook structure (ref. to the operation manual of the tow
hook)
Check straightness of the Bowden cable holder on the tow
hook structure. Restore straightness or replace if
necessary.
Check tension of the Bowden cable manually. If excessive
slack is present retighten by use of the Bowden cable
terminals.
Check wear of the Bowden cable and (crimp) connections
to both end terminals (release handle in the cockpit and
release lever on the hook). Replace cable if necessary
Verify the function of the tow release system, including
check for full opening of the tow hook
Check clearance between elevator control tube and front
bolt attachment of the tow system installation (inside of
fuselage)
Check Bowden cable installation attachments in fuselage
Fuel System
Visually check for fuel system tightness.
Open access hatch to the fuel pump compartment on the
belly skin of the front fuselage.
Drain fuel system by opening the hose between the coarse
fuel filter and the fuel pumps assy on the fuel filter side.
Remove coarse fuel filter and clean it.
