Landing With A Flat Main Tire; Electrical Power Supply System Malfunctions; Low-Voltage Light Illuminates - Cessna 172 P Pilot Operating Handbook

SECTION: | 1 | 2 | 3 |
L AN DI N G WI TH A F L AT M AI N TI RE

LANDING WITH A FLAT MAIN TIRE

[1] Approach
[2] Touchdown
E L E CTRI CAL PO WE R S UPPL Y S YS TE M
M AL F UN CTI O N S
AMMETER SHOWS EXCESSIVE RATE
OF DISCHARGE
[1] Alternator
[2] Alternator Circuit
Breaker
[3] Nonessential Electrical
Equipment
[4] Flight

LOW-VOLTAGE LIGHT ILLUMINATES

DURING FLIGHT
(Ammeter Indicates Discharge)
[1] Avionics Power Switch
[2] Alternator Circuit
Breaker
[3] Master Switch
[4] Master Switch
[5] Low-Voltage Light
[6] Avionics Power Switch
If low-voltage Light illuminates again:
[7] Alternator
[8] Nonessential Radio and
Electrical Equipment
[9] Flight
4 | 5 | 6 | SUPP |
--- NORMAL
--- GOOD TIRE FIRST
--- OFF
--- PULL
--- OFF
--- TERMINATE as soon
as practical
--- OFF
--- CHECK IN
--- OFF
--- ON
--- CHECK OFF
--- ON
--- OFF
--- OFF
--- TERMINATE as soon
as practical
EMERGENCY PROCEDURES
PAGE 5
NOTE:
Try to hold airplane off flat
tire as long as possible.
NOTE:
Illumination of the low-
voltage light may occur during
low RPM conditions with an
electrical load on the system
such as during low RPM taxi.
Under these conditions, the
light will go out at higher RPM.
The master switch need not
be recycled since an over-
voltage condition has not
occured to de-activate the
alternator system.