(2)
Install the related lining panel to close access to the oxygen storage (Ref. TASK 25-55-12-400-003).
(3)
Set the CARGO COMPT LIGHT switch 8LU to the OFF position.
(4)
Remove the access platform(s).
(5)
Close the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-002).
Subtask 35-21-00-862-056
D. De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
OXYGEN STORAGE - DEACTIVATION/REACTIVATION
__________________________________________
TASK 35-21-00-040-001
Check of the Oxygen Cylinder
1. Reason for the Job
__________________
Refer to the MMEL TASK: 35-21-01-E)
Passenger Oxygen
Passenger Oxygen Storage
Oxygen Cylinder
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 1.6 m (5 ft. 3 in.) No specific 1 THERMOMETER 50 DEG C (122 DEG F)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 25-55-12-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65 25-55-12-400-003 Installation of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the
Yellow Electric Pump 35-21-00-991-008 Fig. 401 35-21-00-991-009 Fig. 402
3. Job Set-up
__________ Subtask 35-21-00-861-055
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 35-21-00-010-059
B. Get Access
(1)
Open the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-001).
(2)
Put the access platform below the AFT cargo-compartment door 826.
(3)
Set the CARGO COMPT LIGHT switch 8LU to the ON position.
(4)
Remove the related lining panel to get access to the oxygen storage (Ref. TASK 25-55-12-000-003).
4. Procedure
_________ Subtask 35-21-00-210-053
A. Visual Inspection of the Oxygen Cylinder Pressure
(Ref. Fig. 401/TASK 35-21-00-991-008)
(1)
Calculate the average pressure in the oxygen cylinders.
(a)
Read and write down the pressure on the gage of each oxygen cylinder.
(b)
Add the pressures together and divide the total by the number of installed oxygen cylinders.
(2)
Compare the calculated average pressure in the oxygen cylinders (PA) with the pressure on the fill panel pressure indicator 980WR (PI).
(3)
If the pressures PA and PI are the same, measure the ambient air temperature (TM) in the area of the oxygen cylinders with a THERMOMETER 50 DEG C (122 DEG F).
(4)
Refer to the table (Ref. Fig. 402/TASK 35-21-00-991-009) and the Flight Crew Operating Manual (FCOM) to calculate the oxygen supply available.
Fill Panel and Oxygen Cylinder Assembly - Component Location
Figure 401/TASK 35-21-00-991-008
CES
Chart of Temperature Corrected Pressure
Figure 402/TASK 35-21-00-991-009
EFF : 401-499, 35-21-00 Page 404
Aug 01/05
CES
5. Close-up
________ Subtask 35-21-00-410-059
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the related lining panel to close access to the oxygen storage (Ref. TASK 25-55-12-400-003).
(3)
Set the CARGO COMPT LIGHT switch 8LU to the OFF position.
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