SECTION 6 CESSNA
EMERGENCY PROCEDURES MODEL 162
GARMIN G300
U.S.
EMERGENCY OPERATION IN CLOUDS (Continued)
EMERGENCY DESCENT THROUGH CLOUDS (ADAHRS
FAILED)
When returning to VFR flight after a 180° turn is not practical, a descent
through the clouds to VFR conditions below may be appropriate. If
possible, obtain an ATC assistance and clearance for an emergency
descent through the clouds.
Before descending into the clouds, prepare for a stabilized descent as
follows:
1. Reference optional magnetic compass (if installed) or select
G300 map with COMPASS ARC from MAP SET-UP menu for
GPS derived approximate heading information on moving map
display.
2. If MFD is installed, select the INFO page and reference the GPS
ALTITUDE. GPS ALTITUDE is not the same as barometric
altitude but it will give an altitude approximation.
3. TERRAIN - Select G300 TERRAIN - ON. If RED terrain warning
is issued, apply full power and climb at 58 KIAS estimated. Stall
warning will provide approximate 5 knot stall warning margin.
4. Monitor Ground Speed (GS) - GPS derived GS in combination
with GPS derived wind vector information will allow
approximation of airspeed.
5. MIXTURE Control - RICH (push full in)
6. CARB HEAT Control Knob - ON (pull full out)
7. THROTTLE Control - REDUCE (1700 - 1800 RPM)
8. Approximate Airspeed - 70 - 75 Knots (estimate airspeed from
GS and wind vector data)
9. Elevator Trim - ADJUST (as required)
10. Maintain descent - procedure will provide 500 TO 800 FT/MIN
descent rate.
11. Upon breaking out of clouds, resume normal cruising flight.
(Continued Next Page)
162PHUS-01
6-32
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