EMERGENCY EQUIPMENT
Oxygen
Aircraft Operations Manual
6/2.1
PAGE
10
Apr 01/15
5.1
FAR 121 DESCENT PROFILE
14
25
1O
20
30
40
80
90
100
110
120
FLIGHT TIME
−
MINUTES
10
ALTITUDE
1000 FEET
AOM0006
1 bottle / 4 outlets
30 MIN. OXYGEN SUPPLY
TO 4 PASSENGERS.
Fig. 9
5.2
FAR 135 DESCENT PROFILE
15
25
1O
20
30
40
80
90
100
110
120
FLIGHT TIME
−
MINUTES
ALTITUDE
1000 FEET
AOM0005
30 MIN. OXYGEN SUPPLY TO 30 PASSENGERS.
3 bottles / 30 outlets
Fig. 10
5.3
OXYGEN SUPPLY DURATION charts
These charts are presented for 2 system configura-
tions:
−
The basic 1 bottle installation with 2 or 3 crew
masks in use and 4 passenger oxygen masks.
The oxygen supply duration (Fig. 11) are based
on the descent profile for FAR 121 and the whole
system configuration meets the FAR 121 require-
ment.
−
The optional 3 bottles installation with 2 or 3 crew
masks in use and 30 passenger oxygen masks.
The oxygen supply duration (Fig. 12) are based
on the descent profile for FAR 135 and the whole
system configuration meets the FAR 135 require-
ment.
The OXYGEN SUPPLY DURATION charts assume
a fully loaded cabin and present dispatch pressure
versus crew oxygen supply duration. The charts
present minimum dispatch pressure versus time
from 30 to 120 min. The first 30 min not shown cov-
er the required 30 min passenger oxygen supply (4
resp 30 passenger masks in use) as well as the first
30 min of cockpit crew oxygen supply.
Both FAR Part 121 and 135 require a 2 hour oxy-
gen supply to each cockpit crew member.
CAUTION