SECTION 3
CESSNA
EMERGENCY PROCEDURES
MODEL 172RG
6.
Plan a landing at the nearest airport. With an extremely rapid ice
build-up, select a suitable "off airport
"
landing site.
7.
With an ice accumulation of 1/4 inch or more on the wing leading
edges, be prepared for significantly higher stall speed.
8.
Leave wing flaps retracted. With a severe ice build-up on the
horizontal tail, the change in wing wake airflow direction caused
by wing flap extension could result in a loss of elevator effective-
ness.
9.
Open the window and, if practical, scrape ice from a portion of the
windshield for visibility in the landing approach.
10.
Perform a landing approach using a forward slip, if necessary, for
i mproved visibility.
11.
Approach at 80 to 90 KIAS, depending upon the amount of ice
accumulation.
12.
Perform a landing in level attitude.
STATIC SOURCE BLOCKAGE
(Erroneous Instrument Reading Suspected)
1.
Alternate Static Source Valve (if installed) -- PULL ON.
2.
Windows -- CLOSED.
3.
Airspeed -- Consult appropriate table in Section 5.
LANDING GEAR MALFUNCTION PROCEDURES
LANDING GEAR FAILS TO RETRACT
1.
Master Switch -- ON.
2.
Landing Gear Lever -- CHECK (lever full up).
3.
Landing Gear and Gear Pump Circuit Breakers -- IN.
4.
Gear Up Light -- CHECK.
5.
Landing Gear Lever -- RECYCLE.
6.
Gear Motor -- CHECK operation (ammeter and noise).
LANDING GEAR FAILS TO EXTEND
1.
Master Switch .-- ON.
2.
Landing Gear Lever -- DOWN.
3.
Landing Gear and Gear Pump Circuit Breakers -- IN.
4.
Emergency Hand Pump -- EXTEND HANDLE, and PUMP (perpen-
dicular to handle until resistance becomes heavy -- about 35
cycles).
5.
Gear Down Light -- ON.
6.
Pump Handle -- STOW.
3-8
1 July 1979
CESSNA
SECTION 3
MODEL 172RG
EMERGENCY PROCEDURES
GEAR UP LANDING
1.
Landing Gear Lever -- UP.
2.
Landing Gear and Gear Pump Circuit Breakers -- IN.
3.
Runway -- SELECT longest hard surface or smooth sod runway
available.
4.
Wing Flaps -- 30° (on final approach).
5.
Airspeed -- 65 KIAS.
6.
Doors -- UNLATCH PRIOR TO TOUCHDOWN.
7.
Avionics Power and Master Switches -- OFF when landing is
assured.
8.
Touchdown -- SLIGHTLY TAIL LOW.
9.
Mixture -- IDLE CUT-OFF.
10.
Ignition Switch -- OFF.
11.
Fuel Selector Valve -- OFF.
12.
Airplane -- EVACUATE.
-LANDING WITHOUT POSITIVE INDICATION OF
GEAR LOCKING
1.
Before Landing Check -- COMPLETE.
2.
Approach -- NORMAL (full flap).
3.
Landing Gear and Gear Pump Circuit Breakers -- IN.
4.
Landing -- TAIL LOW as smoothly as possible.
5.
Braking -- MINIMUM necessary.
6.
Taxi -- SLOWLY.
7.
Engine -- SHUTDOWN before inspecting gear.
AN DING WITH A DEFECTIVE NOSE GEAR (Or Flat Nose Tire)
1.
Movable Load -- TRANSFER to baggage area.
2.
Passenger -- MOVE to rear seat.
3.
Before Landing Checklist -- COMPLETE.
4.
Runway -- HARD SURFACE or SMOOTH SOD.
5.
Wing Flaps -- 30°
6.
Cabin Doors -- UNLATCH PRIOR TO TOUCHDOWN.
7.
Avionics Power and Master Switches -- OFF when landing is
assured.
8.
Land -- SLIGHTLY TAIL LOW.
9.
Mixture -- IDLE CUT-OFF.
10.
Ignition Switch -- OFF.
11.
Fuel Selector Valve -- OFF.
12.
Elevator Control -- HOLD NOSE OFF GROUND as long as possi-
ble.
13.
Airplane -- EVACUATE as soon as it stops.
.July 1979
3-9
