-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
1.
On the standby altimeter and on the metric altimeter, set a barometric pressure of 1013 hPa.
2.
On the ground pressure generator:
-
set a static pressure of 465.5 hpa (20,000 ft or 6100 m).
-
set an impact pressure of 176 hpa (320 Kts).
3.
Close the electrovalves to isolate the static and pitot circuits of the aircraft from the ground pressure generator.
4.
On the ground pressure generator:
-slowly balance the pressure in the standby static and pitot circuits and open the electrovalves to get atmospheric pressure.
5.
Stop the ground pressure generator.
**ON A/C 151-199, 201-212, 214-220,
Subtask 34-21-00-790-050-A
A. Leak TestAfter 5 minutes :
-
make sure that the change of altitudeis not more than 500 ft or 152.4 m.After 10 minutes :
-
make sure that the change of speed is not more than 20 Kts.
The rate of descent must not be morethan 6000 ft.mn or 1830 m.mn.
NOTE : You can do the test below for a static pressure of 697 hpa (10,000
____ ft) and an impact pressure of 53.5 hpa (180 Kts) but it is less accurate. After 5 minutes:
-
the change of altitude must not be more than 370 ft.
-
the change of speed must not be more than 10 Kts.
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 34-21-00Page 505 1201-212, 214-220, 1Aug 01/05 1 1 1CES 1
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1.
On the standby altimeter, set a
barometric pressure of 1013 hPa.
2.
On the ground pressure generator:
-
set a static pressure of 465.5
hpa (20,000 ft).
-
set an impact pressure of 176
hpa (320 Kts).
3.
Close the electrovalves to After 5 minutes : isolate the static and pitot - make sure that the change of altitude circuits of the aircraft from the is not more than 500 ft. ground pressure generator. After 10 minutes :
-make sure that the change of speed is not more than 20 Kts.
4. On the ground pressure generator: The rate of descent must not be more
-slowly balance the pressure in than 6000 ft.mn.
the standby static and pitot
circuits and open the
electrovalves to get
atmospheric pressure.
5. Stop the ground pressure
generator.
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-212, 214-220,
5. Close-up
________
R **ON A/C 001-049, 051-099, 101-105, 151-199,
Subtask 34-21-00-020-050
A. Remove the ground pressure generator
(1)
Disconnect the ground pressure generator.
(2)
Remove the adaptors from the standby static probe and the standby pitot probe.
1EFF : 001-049, 051-099, 101-105, 151-199, 1 34-21-00Page 506 1201-212, 214-220, 1Aug 01/05 1 1 1CES 1 1EFF : 001-049, 051-099, 101-105, 151-199, 1 34-21-00Page 507 1201-212, 214-220, 1Aug 01/05 1 1 1CES 1 1EFF : 001-049, 051-099, 101-105, 151-199, 1 34-21-00Page 508 1201-212, 214-220, 1Aug 01/05 1 1 1CES 1 1EFF : 001-049, 051-099, 101-105, 151-199, 1 34-21-00Page 509 1201-212, 214-220, 1Aug 01/05 1 1 1CES 1
(3) Remove the cover from the opposite standby static probe.
(4) Remove the piece of plastic and colored adhesive tape from the drain holes of the standby pitot probe.
(5) Install the slip on covers on the standby static probe and the standby pitot probe.
R **ON A/C 201-212, 214-220,
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