KCAA Cabin Crew Licence Theoretical Knowledge Examination

During a pre-flight inspection of a Halon 1211 (BCF) fire extinguisher, which of the following must be verified?

• AThe safety pin is installed, the tamper seal is intact, and the pressure gauge pointer is…
• BThe extinguisher is completely filled with water and the CO2 cartridge is punctured.
• CThe nozzle is disconnected and the unit is stored in a horizontal position only.
• DThe pressure indicator reads zero and the safety pin has been removed.

Which type of fire is a water fire extinguisher suitable for, and what is a critical safety hazard of using it on an electrical fire?

• AClass A fires (paper, wood, fabric); it presents an electrocution hazard because water co…
• BClass B fires (flammable liquids); it presents a toxic gas hazard because of chemical rea…
• CClass C fires (electrical); it presents no hazard because water cools the electrical comp…
• DClass D fires (flammable metals); it presents a pressure explosion hazard.

When discharging a Halon fire extinguisher in the cabin, why is it mandatory for the cabin crew member to wear a Protective Breathing Equipment (PBE)?

• AHalon gas is toxic when inhaled and decomposes into highly irritating halocarbon byproduc…
• BHalon completely depletes the cabin of all oxygen within 5 seconds of discharge.
• CThe PBE protects the crew member from the freezing temperature of the liquid water agent.
• DPBE is only worn to block the loud noise of the extinguisher discharging.

What is the typical operational duration of a chemical cabin oxygen generator once it has been activated by pulling a mask?

• AApproximately 12 to 15 minutes, and it cannot be turned off once started.
• BExactly 45 minutes, and it can be toggled on and off as needed.
• CUp to 2 hours, but it must be manually replenished with liquid oxygen.
• DOnly 5 minutes, after which the flight deck must deploy secondary generators.

At what typical cabin altitude threshold are passenger oxygen masks designed to automatically drop from the passenger service units (PSU)?

• A14,000 feet
• B10,000 feet
• C8,000 feet
• D18,000 feet

During a pre-flight inspection of a portable oxygen cylinder, what is the minimum pressure required for the cylinder to be considered serviceable for flight?

• ATypically 1,500 psi (pounds per square inch), or as specified by the airline's operations…
• BExactly 500 psi, regardless of the bottle size.
• CA minimum of 3,000 psi to ensure maximum flow rate.
• DAny pressure above zero, provided the mask is pre-attached.

If a passenger oxygen mask compartment fails to open automatically during a decompression, how should the cabin crew member manually deploy the masks?

• AInsert a slender object (such as a pin, pen, or card) into the manual release slot/hole o…
• BUse a heavy object to pry open the compartment door by force, destroying the latch mechan…
• CInstruct the passengers to hit the ceiling panel repeatedly until the latch pops open.
• DWait for the pilot to cycle the cabin pressurization system to trigger the latch again.

What is the primary purpose of the 'girt bar' on an aircraft cabin door slide system?

• ATo connect the door slide container to floor brackets, enabling automatic slide inflation…
• BTo lock the door latch mechanism physically from the outside so it cannot be opened by un…
• CTo serve as a handrail for passengers to hold onto as they exit the aircraft.
• DTo prevent the door from opening when the cabin is pressurized on the ground.

During an emergency evacuation on land, if a slide fails to inflate automatically when the armed door is opened, what action must the cabin crew member take immediately?

• APull the red manual inflation handle located on the slide girt.
• BClose the door immediately and redirect passengers to another exit.
• CPush the slide out and instruct passengers to climb down it like a ladder.
• DCall the flight deck to request slide inflation from the cockpit control panel.

In a water ditching evacuation, how is a slide-raft separated from the aircraft fuselage once it is loaded with passengers?

• ALift the girt flap, pull the quick-release handle (or detach the girt bar), and cut the m…
• BUse the escape axe from the cockpit to chop through the heavy steel support cables.
• CWait for the emergency inflation gas to naturally dissolve the attachment hinges.
• DThe slide-raft is designed to automatically detach and float away without crew interventi…

What is the correct cabin crew command for passengers during a land evacuation when using a single-lane escape slide?

• A"Jump and slide! Jump and slide!"
• B"Sit and slide! Sit and slide!"
• C"Climb down carefully one by one!"
• D"Stop, look, and leap!"

What does the 'sterile flight deck' rule require, and during which phases of flight does it apply?

• AIt prohibits cabin crew from contacting the pilots except for safety-related matters duri…
• BIt requires the flight deck to be chemically sanitized before every departure.
• CIt bans the pilots from eating or drinking during the cruise phase of flight.
• DIt prevents cabin crew from entering the flight deck at any time during the entire flight.

During a pre-flight check, what must cabin crew verify regarding the emergency flashlight stowed at their station?

• AIt is securely stowed, and the red LED indicator light is flashing at regular intervals.
• BThe flashlight is turned on and left illuminated to check battery strength.
• CThe casing is opened to inspect the manufacturing date of the alkaline batteries.
• DThe flashlight is plugged into the main cabin AC outlet to ensure it is charging.

What is the cabin crew's first response action upon discovering a fire in an overhead locker?

• ANotify the flight deck, obtain a Halon extinguisher and PBE, check the locker door for he…
• BOpen the locker door completely to inspect the contents and locate the exact source of th…
• CImmediately pour water or carbonated drinks from the galley cart into the locker vents.
• DDeploy the passenger oxygen masks to smother the fire with oxygen.

What is a key difference between a land evacuation brace position and a water ditching brace position for cabin crew stowed in a rear-facing jumpseat?

• AIn a rear-facing jumpseat, the crew member presses their head firmly back against the hea…
• BIn a rear-facing jumpseat, the crew member must lean forward and place their head between…
• CThere is no difference; all crew members must stand up and hold onto the door handles.
• DCrew members must sit on their hands with palms facing down in land evacuations only.

What is the purpose of the pressure relief valve on an aircraft cabin door slide system?

• ATo vent excess carbon dioxide/nitrogen gas if the slide over-inflates due to high ambient…
• BTo allow cabin crew to manually deflate the slide quickly after an evacuation.
• CTo regulate the pressure inside the passenger cabin during normal high-altitude cruise.
• DTo spray fire-retardant foam onto the slide surface during inflation.

During a pre-flight safety check of the cabin door, how should the cabin crew member verify that the door is fully disarmed?

• AVerify that the girt bar is physically removed from the floor brackets and secured in the…
• BVerify that the door is locked from the outside with the ground safety pin installed thro…
• CVerify that the door slides have been completely removed from the aircraft and stored in…
• DOpen the door slightly to see if the slide container falls out of its bracket.

What is the function of the 'red strap' (visual indicator) placed across the window of an aircraft cabin door on the ground?

• ATo warn ground staff that the door slide is armed and opening the door from the outside w…
• BTo signal to passengers that the exit is blocked and cannot be used in an emergency.
• CTo seal the door frame and prevent rain or drafts from entering the cabin.
• DTo indicate that the cabin pressure is completely equalized with the outside air.

Which of the following is a critical instruction to give passengers during an evacuation over an overwing exit equipped with an escape slide?

• A"Step out onto the wing, follow the marked path, and slide down!"
• B"Jump directly from the door sill onto the runway!"
• C"Sit down on the wing and wait for the crew to inflate the slide manually!"
• D"Climb onto the engine cowling to jump clear of the wing structure!"

What is the purpose of the 'heave-in line' on a slide-raft or life raft?

• ATo rescue survivors in the water by throwing the line to them and pulling them toward the…
• BTo tie multiple rafts together to prevent them from drifting apart in the ocean.
• CTo serve as a towing line for helicopters during search and rescue operations.
• DTo anchor the raft to the seabed to prevent it from drifting.

What is the correct pre-flight check for the Protective Breathing Equipment (PBE) stowed in the cabin?

• AVerify the unit is stowed in its container, the tamper indicator/seal is intact, and the…
• BOpen the sealed foil bag to verify the oxygen generator is not cracked.
• CConnect the PBE mask to a portable oxygen bottle to test the flow valve.
• DConfirm the unit's batteries are charged by pressing the push-to-test button.

How does a cabin crew member activate the oxygen flow in a standard Protective Breathing Equipment (PBE) after pulling it over their head?

• APull the activation ring/lanyard sharply, or it activates automatically upon donning depe…
• BBlow into the mask three times to initiate chemical generator heating.
• CConnect the supply hose to the overhead cabin oxygen outlet panel.
• DTurn the valve dial on the neck seal clockwise to the 'ON' position.

Which of the following is a primary duty of cabin crew during a 'planned' emergency landing or ditching?

• ABrief passengers on brace positions, locate emergency exits, fit life jackets (for ditchi…
• BEvacuate the aircraft immediately while the plane is still in flight.
• CRequest the flight deck to dump fuel from the wings manually.
• DTell passengers to remain in their seats and sleep to conserve oxygen.

During a pre-flight check, what must cabin crew verify regarding the Megaphone stowed in the passenger cabin?

• AIt is securely stowed, and pressing the trigger produces a clicking sound or green LED in…
• BIt is plugged into the cabin intercom system to test the volume.
• CThe volume dial is turned to the maximum setting and left on to test feedback.
• DIt is completely dry and the shoulder strap has been removed.

What is the primary indicator that a cabin door is in the 'armed' mode on a Boeing 737 aircraft?

• AThe girt bar is engaged in the floor brackets.
• BThe flight deck door indicator light turns red.
• CThe door handle is locked with a padlock.
• DThe door pressure warning light is flashing.

What is the correct chest compression-to-breath ratio when performing Cardiopulmonary Resuscitation (CPR) on an adult passenger by a single rescuer?

• A30 compressions to 2 rescue breaths.
• B15 compressions to 2 rescue breaths.
• C5 compressions to 1 rescue breath.
• D50 compressions to 5 rescue breaths.

When performing chest compressions during adult CPR, what is the recommended depth of compressions?

• AAt least 2 inches (5 cm) but not exceeding 2.4 inches (6 cm).
• BNo more than 1 inch (2.5 cm) to avoid cracking the ribs.
• CApproximately 3 to 4 inches (7.5 to 10 cm) to ensure deep circulation.
• DVarying depths starting shallow and gradually getting deeper.

What is the primary physiological cause of 'hypoxic hypoxia' in aviation, which cabin crew must recognize at high cabin altitudes?

• AA decrease in the partial pressure of oxygen in the inspired air as barometric pressure d…
• BA complete lack of red blood cells (anemia) causing poor oxygen transport.
• CCarbon monoxide poisoning blocking the binding sites on hemoglobin.
• DPoor blood circulation due to sitting in a cramped position for too long.

Which of the following is an early symptom of hypoxia that can compromise a cabin crew member's safety duties without their conscious awareness?

• AA false sense of well-being (euphoria) and impaired judgment.
• BSevere shivering and sudden loss of hearing.
• CAn immediate burning sensation in the throat and lungs.
• DSudden localized swelling in the lower limbs.

How do the symptoms of hyperventilation differ from those of hypoxia, and what is a diagnostic indicator of hyperventilation?

• AHyperventilation often causes tingling sensations in the fingers, toes, and around the mo…
• BHyperventilation causes the lips and fingernails to turn blue immediately.
• CHyperventilation causes a total loss of vision, whereas hypoxia only causes color blindne…
• DHyperventilation causes a slow, shallow breathing pattern, whereas hypoxia causes rapid g…

What is the correct first-aid treatment for a passenger showing signs of hyperventilation?

• AReassure the passenger, encourage them to breathe slowly, or have them talk to slow down…
• BAdminister high-flow supplemental oxygen immediately using a portable cylinder.
• CPerform chest compressions to force carbon dioxide back into the lungs.
• DInstruct the passenger to run up and down the cabin aisle to burn off excess adrenaline.

Under what condition is a cabin crew member permitted to open and use the Emergency Medical Kit (EMK / Physician's Kit) during a flight?

• AOnly under the authorization of the Captain and when administered by a qualified, license…
• BWhenever a passenger requests an over-the-counter painkiller like paracetamol.
• COnly during a cabin decompression to retrieve emergency oxygen regulators.
• DWhenever the cabin crew member determines a passenger is feeling air-sick.

What is the physiological mechanism of 'ear barotrauma' (ear block) during the descent phase of a flight?

• AThe increasing cabin pressure pushes the eardrum inward because the Eustachian tube fails…
• BThe decreasing cabin pressure causes the eardrum to bulge outward and burst.
• CThe cold air in the cabin causes the auditory nerve to swell, blocking sound transmission.
• DThe motion of the aircraft causes fluid in the inner ear semicircular canals to freeze.

How should a cabin crew member assist a conscious adult passenger who is choking and unable to speak, cough, or breathe?

• AStand behind the passenger and perform abdominal thrusts (Heimlich maneuver) until the ob…
• BGive the passenger large gulps of water to wash down the obstruction.
• CHave the passenger lie down on their back and perform chest compressions immediately.
• DSlap the passenger on the back repeatedly while keeping them in an upright, standing posi…

What is the first-aid treatment for a minor thermal burn (first or second degree) sustained in the cabin?

• ACool the burn immediately under cool, running water for at least 10 to 20 minutes, then c…
• BApply butter, grease, or hand cream to the burn to soothe the skin.
• CPop any blisters that form to relieve the pressure and apply an alcohol wipe.
• DWrap the burn tightly with a dry woolen blanket to keep it warm.

What is the correct first-aid action for a passenger showing signs of a severe allergic reaction (anaphylaxis), such as facial swelling, difficulty breathing, and hives?

• AAssist the passenger in administering their prescribed epinephrine auto-injector (EpiPen)…
• BGive the passenger hot tea to soothe their throat and tell them to rest.
• CHave the passenger stand up and walk around to improve their circulation.
• DAdminister high-dose aspirin from the First Aid Kit immediately.

How should cabin crew manage a passenger who is having a grand mal seizure in the cabin?

• AClear the area of hard objects, place a soft item under their head, do not restrict their…
• BRestrain the passenger's arms and legs firmly to stop the shaking.
• CInsert a wooden spoon or padded object between their teeth to prevent them from biting th…
• DAdminister water immediately to prevent dehydration during the seizure.

What is the first-aid treatment for a passenger experiencing hyperventilation-induced muscle spasms in their hands?

• ASlow down their breathing rate through reassurance and calm breathing exercises, which wi…
• BApply ice packs to the hands to constrict the blood vessels.
• CMassage the fingers vigorously until the muscles relax.
• DAdminister insulin from the medical kit, as spasms indicate low blood sugar.

During a flight, a passenger complains of severe, crushing chest pain radiating to the left arm and jaw. What is the correct protocol for the cabin crew?

• ANotify the Captain immediately, administer high-flow oxygen, assist the passenger in taki…
• BHave the passenger lie down with their feet elevated and perform chest compressions immed…
• CGive the passenger a hot cup of coffee to stimulate their heart rate.
• DIgnore the symptoms unless the passenger loses consciousness.

What is the recovery position, and why is it used for an unconscious passenger who is breathing normally?

• ALying the passenger on their side; it keeps the airway open and prevents fluids or vomit…
• BLying the passenger flat on their back with their head turned to the side; it improves sp…
• CSitting the passenger upright in their seat with a neck brace; it prevents neck injuries.
• DLying the passenger face down; it protects the face from cabin debris.

How should a cabin crew member treat a nosebleed (epistaxis) in flight?

• AHave the passenger sit down, lean slightly forward, and pinch the soft part of the nose f…
• BHave the passenger lean their head far back to stop the blood from flowing.
• CInsert dry cotton buds deep into the nasal cavity and apply heat packs.
• DHave the passenger lie flat on their back with a cold compress on their chest.

What is the maximum duration of 'Useful Consciousness' (TUC) for a person at a typical cruising altitude of 35,000 feet following a rapid decompression?

• A30 to 60 seconds
• B5 to 10 minutes
• C12 to 15 minutes
• DOnly 5 seconds

If a passenger suffers from deep vein thrombosis (DVT) symptoms, described as swelling, warmth, and redness in one calf, what first-aid care should cabin crew provide?

• AKeep the passenger seated, elevate the leg slightly, instruct them not to massage the leg…
• BVigorously massage the calf muscle to break up any blockages.
• CHave the passenger perform deep knee bends and walk quickly up and down the aisle.
• DApply hot compresses to the calf and wrap it tightly with elastic bandages.

Which document must a cabin crew member fill out whenever a medical emergency occurs and the first aid equipment is used during a flight?

• ACabin Medical Incident Report Form (or airline equivalent) and log book entry.
• BThe aircraft journey log book only.
• CThe Captain's flight operations manual.
• DThe passenger's customs declaration card.

What is the primary danger associated with 'decompression sickness' (the bends) in aviation, and how is it managed immediately?

• ANitrogen gas bubbles forming in the blood and joint tissues due to rapid pressure drop; t…
• BCarbon dioxide poisoning causing the blood to become highly acidic; treated by having the…
• COxygen toxicity causing convulsions; treated by shutting off the passenger's oxygen suppl…
• DDehydration causing the joints to dry out; treated by forcing the passenger to drink 2 li…

Under the ICAO and KCAA Dangerous Goods Regulations, which of the following is defined as a Class 3 dangerous good?

• AFlammable liquids, such as paints, alcohols, and fuel.
• BExplosives, such as fireworks and ammunition.
• CCorrosive acids, such as battery fluid.
• DInfectious substances, such as virus samples.

Which class of Dangerous Goods covers toxic and infectious substances, such as laboratory specimens and clinical waste?

• AClass 6
• BClass 9
• CClass 2
• DClass 8