Static Source Blockage (Erroneous Instrument Reading Suspected); Electrical Power Supply System Malfunctions; Over-Voltage Light Illuminates; Ammeter Shows Discharge - Cessna SKYHAWK 1976 Pilot Operating Handbook

3-8
SECTION 3 CESSNA
EMERGENCY PROCEDURES MODEL 172M
STATIC SOURCE BLOCKAGE
(Erroneous Instrument Reading Suspected)
(1) Alternate Static Source Valve -- PULL ON.
(2) Airspeed -- Consult appropriate calibration tables in Section 5.
LANDING WITH A FLAT MAIN TIRE
(1) Approach -- NORMAL.
(2) Touchdown -- GOOD TmE FmST, hold airplane off flat tire as
long as possible.
ELECTRICAL POWER SUPPLY SYSTEM MALFUNCTIONS
OVER-VOLTAGE LIGHT ILLUMINATES
(1) Master Switch -- OFF (both sides).
(2) Master Switch -- ON.
(3) Over-Voltage Light -- OFF.
If over-voltage light illuminates again:
(4) Flight -- TERMINATE as soon as possible.
AMMETER SHOWS DISCHARGE
(1) Alternator -- OFF.
(2) Nonessentail Electrical Equipment -- OFF.
(3) Flight -- TERMINATE as soon as practical.