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Converted with kit
NS402S with ROTAX 912 S3 and
HOFFMANN HO-V352F/170FQ+10
Changes in the equipment of the aircraft or the aircraft weight and center of gravity due to
subsequently installed equipment or cabin occupancy may lead to a change in the behavior of
the aircraft, especially during prolonged spins. This is normal, but results a change in the spin
characteristics and delays the termination of the spin. in maneuvers with more than three
turns. However, the above-mentioned method of terminating the spin should always be used
as it is the fastest way to terminate a spin.
ELECTRICAL POWER SUPPLY MALFUNCTIONS
Malfunctions in the electrical power system can be detected by periodically monitoring the
amperemeter, but the cause is usually difficult to determine. Breakage in the generator winding
or a or loose wire is the most likely cause of charging problem, although not always.. A
damaged or improperly adjusted voltage regulator can also cause interference. All these kinds
of malfunctions create an "electrical emergency" that requires immediate action. Power supply
malfunctions usually fall into two categories: too high charging current or insufficient charging
current. The following paragraphs describe the recommended countermeasures for the given
situation.
EXCESSIVE RATE OF CHARGE
After engine starting and heavy electrical usage at low engine speeds (such as extended
taxiing) the battery condition will be low enough to accept above normal charging during the
initial part of a flight. However, after thirty minutes of cruising flight, the ammeter should be
indicating less than two needle widths of charging current. If the charging rate were to remain
above this value on a long flight, the battery would overheat and evaporate the electrolyte at
an excessive rate. Electronic components in the electrical system could be adversely affected
by higher than normal voltage if a faulty voltage regulator setting is causing the overcharging
To preclude these possibilities, an over-voltage sensor will automatically shut down the
alternator and the over-voltage warning light will illuminate if the charge voltage reaches
approximately 16 volts. and the malfunction was only momentary; an attempt should be made
to reactivate the alternator system. To do this,
Circuit breaker „Gen. Feld 1" ................................. pull
1)
30A-Circuit breaker „Generator 1" ......................... pull
2)
Main switch „BAT" und „GEN" ............................... OFF-then OFF
3)
4)
Over voltage ......................................................... Check
5)
If there is no overvoltage/operations resumed normal
Emergency procedures ..................................... Complete
Airplane Flight
Manual Cessna F150L
Nr. 160
3-10
Page:
Edition 1
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