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Flashcards in Oxygen Deck (26):
1

The source of oxygen in the KC-135 primary and auxiliary systems is _______ oxygen

Gaseous

2

The primary system shutoff valve will be safety wired in the full _______ position during normal operation.

Counterclockwise (Open)

3

There are normally ___________ MA-1 portable oxygen assemblies on the aircraft, plus 2 brackets.

8

4

The MA-1 portable oxygen bottle assembly consists of __________, _______, and _______

A-21 pressure demand regulator; A-6 oxygen cylinder; Carrying harness

5

The EPOS can be used as a source of oxygen by the crew when movement about the aircraft is necessary for crew duties, except___________.

Passenger monitoring duties.

6

The purpose of the AERP is to protect aircrew members from ____________________.

Toxic chemical exposure

7

When in flight, if the primary system shows a pressure below 100 psi, you must:

Open the auxiliary system shutoff valve

8

The primary and auxiliary system will be serviced:

As determined by the aircraft commander

9

The service panel consists of a(n) ____________ and __________________.

An oxygen filler valve; A pressure gage

10

The oxygen FLOW indicator indicates ______.

normal flow of oxygen

11

With the regulator diluter lever set to NORMAL, the regulator delivers a varying mixture of air and oxygen depending on altitude. 100% oxygen at approx _____________ and 100% air at _____

30,000 ft cabin pressure altitude; sea level

12

On regulators other than the CRU-73A, if the oxygen supply lever is OFF, and the diluter lever is in NORMAL, the crewmember will be breathing cabin air only. T/F

True

13

The A-21 pressure-demand regulator regulates portable oxygen bottle pressure delivered to the mask. T/F

True

14

The regulator supplies 100% oxygen, but only when the altitude selector knob is set to EMER. T/F

False, it provides 100% oxygen at all times

15

A positive lock is provided on the MA-1 portable oxygen bottle selector knob. T/F

False

16

Which altitude selector knob position supplies the highest positive pressure?

EMER

17

What are you checking for when you set the emergency toggle lever to TEST MASK and hold your breath?

Proper mask fit and serviceable hoses and connectors

18

Ensure pilot and copilot oxygen bottles are serviced to at least _______PSI and the altitude selector knob is set to ___________.

300; normal

19

Oxygen pressure in the MA-1 portable oxygen bottle should not be permitted to drop below ________ psi.

50

20

Prior to servicing the portable oxygen bottles, you should ensure that the oxygen cylinder filler port and oxygen recharger outlet are ____________________.

Free of oil and grease

21

The copilot will initiate oxygen checks every 15 min between ________ and __________ ft and every 5 min above __________ ft.

10,000-25,000; above 25,000 ft CABIN ALTITUDE

22

A functioning system and mask located within arm’s reach, with a regulator set to 100% and ON describe oxygen being ___________________.

Readily available

23

Wear a helmet with an oxygen mask attached to one side, or have available an approved quick-donning/sweep-on-mask properly adjusted and positioned. (Regulators shall be set to 100% and ON) describes oxygen being _______________.

Immediately available

24

After setting the oxygen regulator for emergency use, you should

Inform the pilot immediately, as this reduces the oxygen supply duration

25

When the emergency oxygen toggle lever is set to EMERGENCY, the regulator supplies:

100% oxygen under positive pressure

26

The oxygen regulator is suitable for routine use up to __________ feet and for emergency use up to __________ feet.

42,000; 50,000