TOMARK, s.r.o.
Airplane Maintenance Manual
Chapter 05 Inspection and Maintenance
Issue: 04.APR 2016
Page 65
above 12V, the Ampere meter should show a discharge depending on
the amount of electric load. A regular twitch trigged by the ACL is
normal. The voltage should immediately increase to 13.6V when the
engine generator engages at engine speed above 2800 RPM, the
ammeter should immediately read a charging state.
05-21-30 Flight Handling Tests
These tests come closer to the boundaries of the flight envelope and
have to be tested with care. Gain sufficient altitude before starting
these tests. Do not execute these tests in inadequate weather
conditions. Do not omit this part of the maintenance check flight but
schedule an additional flight. The flight handling tests address four
items.
Normal Flight
In this item the pilot should comment on the normal flight handling.
He can base his judgement on the experience gained on the type in
previous flights. He should base his judgment on all items tested so
far in the maintenance check flight. He should address flight
handling, the possibility to trim the aircraft and the control authority.
High Speed
In this part of the test the pilot should fly speeds up to V
NE
. This
speed should be approached carefully with sufficient altitude left for
recovery since this speed will only be reached in a relatively steep
dive. Since there is a risk of over speeding the engine this has to be
flown at idle power setting. Check the rpm at VNE. This should not be
more than 5200 rpm. During the high speed flight, check for
excessive or unusual vibrations or buffeting. When unusual vibrations
are noticed, do not increase speed further. Gently pull out of the dive
and return to the airfield as soon as practical for inspection.
Stall
Approach the stall with a speed reduction of approximately 1knot/s.
Trim the aircraft at 65 KIAS before starting this maneuver. When the
airplane stalls, recover the aircraft in a normal way. This has to be
done in a configuration with the flaps up and the power set to idle.