Decompression

Question 1

What are the 2 types of Decompressions?

Answer 1

Gradual & Rapid

Question 2

What indications in the cabin will you get from a Rapid Decompression?

Answer 2

• Loud bang
• Rushing of air
• Extreme Cold
• Extreme noise due to wind
• Loose items such as newspapers
• Hot fluids in the galley May boil over

Question 3

What occurs in the cabin if it was to exceed 10,000 ft?

Answer 3

• Fasten seatbelt signs & no smoking signs illuminate
• Cabin lighting illuminated to 100% brightness
• Single tone chime when exit locator lights illuminate

Question 4

What indications occur simultaneously if the cabin altitude was to exceed 14,000 ft?

Answer 4

• Automatic deployment of oxygen masks from PSU
• Automated emergency descent announcement instructs the use of oxygen masks

Question 5

What does a gradual decompression mean?

Answer 5

A slow and gradual loss of pressurisation due to a leak or failure of the pressurisation equipment.

Question 6

What does a rapid decompression mean?

Answer 6

Occurs within a few seconds and may be caused by a structural damage to the aircraft such as collapse of doors/ door seals, windows fuselage structural damage or failure of the aircraft pressurisation system

Question 7

What is the ETP (Effiective Time Performance) for 30,000ft?

Answer 7

1-2 mins

Question 8

What is the ETP (Effective Time Performance) for 35,000ft?

Answer 8

0.5-1 min

Question 9

What is the ETP (Effective Time Performance) for 40,000ft?

Answer 9

15-20 seconds

Question 10

What is the ETP (Effective Time Performance) for 43,000ft?

Answer 10

9-12 seconds

Question 11

What are the visible indications of Hypoxia?

Answer 11

• Blueness around fingertips & lips
• Laboured/ heavy breathing

Question 12

How to treat Hypoxia?

Answer 12

• Oxygen on HI Flow
• Keep giving oxygen and complete recovery follow

Question 13

What PA will be made by the Flight Deck if there was a Emergency Descent?

Answer 13

“Attention Cabin Crew Emergency Descent”