If a decision to ditch is made, immediately alert
all personnel to prepare for ditching. Plan the
approach into the wind if the wind is high and the seas
are heavy. If the swells are heavy but the wind is light,
land parallel to the swells. Set up a minimum rate
descent (power on or off, as the situation dictates
airspeed 110 120 KIAS). Flare as in a normal
landing, as it is very difficult to judge altitude over
water, particularly in a slick sea. Leveling off too high
may cause a nose low "drop-in," while having the tail
too low at impact may result in the aircraft pitching
forward and "digging-in." Expect more than one
impact shock and several skips before the final hard
shock. There may be nothing but spray visible for
several seconds while the aircraft is decelerating. To
prevent cartwheeling, it is important that the wings be
level when the aircraft hits the water. After the aircraft
is at rest, supervise evacuation of passengers and exit
the aircraft as quickly as possible. In a planned
ditching, the life raft and first-aid kits should be
secured close to the cabin emergency exit hatch for
easy access when evacuating; however, do not
remove the raft from its carrying case inside the
aircraft. After exiting the aircraft, keep the raft from
any damaged surfaces that might tear or puncture the
fabric. The length of time that the aircraft will float
depends on the fuel level and the extent of aircraft
damage caused by the ditching. Table 9-1 lists the
appropriate duties for crew and occupants for planned
and immediate ditching. Refer to Figure 9-3 for body
positions during ditching. Figure 9-4 shows sea swell
information. Perform the following procedure:
Do not unstrap from the seat until all
motion stops. Do not attempt evacuation
until the aircraft comes to a complete stop
due to the possibility of injury and
1. Radio calls/transponder As required.
2. Personnel emergency briefing As
3. BLEED AIR VALVES PNEU & ENVIR
4. CABIN PRESS switch DUMP.
5. CABIN signs switch NO SMOKE &
6. Cabin emergency exit hatch Remove
7. Seat belts and harnesses Secure.
8. GEAR UP.
9. FLAPS DOWN.
10. Nonessential electrical equipment Off.
11. Approach Normal, power on.
12. Emergency lights As required.
9-35. FLIGHT CONTROLS MALFUNCTION.
Use the following procedures, as applicable, for
flight control malfunctions.
a. Unscheduled Rudder Boost Activation.
Rudder boost operation without a large variation of
power between engines indicates a failure of the
system. Perform the following:
1. RUDDER BOOST OFF.
The rudder boost system may not operate
when the brake deice system is in use.
Availability of the rudder boost system will
be restored to normal when the BRAKE
DEICE switch is turned OFF.
IF CONDITION PERSISTS:
2. RUDDER BOOST circuit breaker Pull.
3. BLEED AIR VALVE OFF (below 10,000
4. Rudder trim Adjust.
b. Unscheduled Electric Elevator Trim. In the
event of unscheduled electric elevator trim, perform
1. Control wheel disconnect switch Press
2. Elevator trim switch OFF.
3. AP TRIM POWER circuit breaker Out.