SOP B73C · AILO-0022.7 · Amendment 2 · 15 déc 2025 · 4.6 · p.157
Flow SOP 4.6 Air Inuit — puis NNC QRH 2.3. Ne pas réécrire l’arbre QRH ici. Si incontrôlable : SOP 4.7 / QRH 0.3.
Regardless of who is flying the aircraft prior to the emergency, at the first sign of any loss of pressurization, the PIC, if seated, will immediately take control. If the PIC decides that a rapid descent is required, the PIC will advise the SIC and then perform the descent.
Pilot-in-command
“I HAVE CONTROL, RAPID DEPRESSURIZATION DRILL”
Don Oxygen Mask, turn on speaker, and select BOOM/MASK switch to MASK.
Use the lower (INT) position on the control column MIC switch or INT on the audio control panel.
Call: “PILOT-IN-COMMAND ON OXYGEN” to establish communication.
FASTEN BELTS signON
If cabin altitude is controllable: Continue manual operation to maintain correct cabin altitude. When cabin altitude is at or below 10,000 feet, oxygen masks may be removed.
If cabin altitude is uncontrollable: “EMERGENCY DESCENT DRILL”
Second-in-command
Don Oxygen Mask, turn on speaker, and select BOOM/MASK switch to MASK.
Use the lower (INT) position on the control column MIC switch or INT on the audio control panel.
Respond: “SECOND-IN-COMMAND ON OXYGEN” to establish communication.
Pressurization Mode SelectorMAN
Outflow Valve switchHold in CLOSE until outflow valve shows fully closed.
If cabin altitude is uncontrollable: “NO CONTROL”
If the cabin altitude exceeds or is expected to exceed 14,000 feet, select the Passenger Oxygen switch to ON.
Assess the situation, placing emphasis on obvious evidence of a complete decompression: Outflow Valve position and Cabin Differential; Bleed Switch configuration and APU status; L/R Duct pressures and PACK status.
QRH 2.3 · CABIN ALTITUDE WARNING or Rapid Depressurization →
SOP 4.7 EMERGENCY DESCENT →
QRH 0.3 · Emergency Descent →
SOP officiel AILO-0022.7 · 4.6 · p.157