Specifications

SECTION II
MODEL 560 AIRPLANE AND SYSTEMS
Figure 2-28. Pilot's Side Console Oxygen Control and Outlets
WARNING
• NO SMOKING WHEN OXYGEN IS BEING USED OR FOLLOWING
USE OF PASSENGER OXYGEN UNTIL LANYARDS HAVE BEEN
REINSTALLED.
• DUE TO HUMAN PHYSIOLOGICAL LIMITATIONS, THE
PASSENGER OXYGEN SYSTEM IS NOT SATISFACTORY FOR
CONTINUOUS OPERATION ABOVE 25,000 FEET CABIN ALTITUDE
AND THE CREW OXYGEN SYSTEM IS NOT SATISFACTORY FOR
CONTINUOUS OPERATION ABOVE 40,000 FEET CABIN ALTITUDE.
INDIVIDUAL PHYSIOLOGICAL LIMITATIONS MAY VARY. IF CREW
OR PASSENGERS EXPERIENCE HYPOXIC SYMPTOMS, DESCEND
TO A LOWER CABIN ALTITUDE.
Should cabin altitude exceed 14,500 feet, ±500 feet, an altitude sensing switch will electrically actuate
the passenger solenoid valve, supplying 70 PSI oxygen pressure to the passenger manifold. This pressure
is sufficient to operate the passenger mask actuators, deploy the doors and drop the continuous flow masks
at each passenger seat. Oxygen will not flow from these masks until the lanyard on the respective mask
has been pulled, removing the pintle pin. This conserves oxygen in the event all masks are not to be used.
When the cabin altitude has reached approximately 8000 feet with electrical power available, the passenger
solenoid valve will close, allowing passenger manifold oxygen pressure to bleed off. If electrical power is
not available, the passenger manifold pressure can be shut off by closing the OXYGEN CONTROL VALVE
by selecting CREW ONLY position. As the oxygen pressure dissipates, the door actuators will retract,
allowing mask stowage to be accomplished. Reinstall all removed pintle pins before stowing masks.
The high altitude airport mode is automatically selected when a field elevation above 8,000 feet is set
into the cabin pressurization controller. In this mode, the CAB ALT annunciator is inhibited below a cabin
pressure altitude of approximately 14,500 feet.
WARNING
WHEN HOLDING OR OTHERWISE OPERATING AT ALTITUDES
BELOW 25,000 FEET FOR PERIODS GREATER THAN 30 MINUTES
WITH THE CABIN ALTITUDE WARNING SHIFTED FROM 10,000
FEET TO 14,500 FEET (SLA BETWEEN 8,000 FEET AND 14,500
FEET), AT LEAST ONE PILOT MUST USE SUPPLEMENTAL OXYGEN
CONTINUOUSLY.
NOTE
If cabin altitude exceeds 14,500 feet ±500 feet, CAB ALT warning light
will illuminate and passenger oxygen masks will deploy.
I 56OMB-01 Configuration AA 2-59