PIM 417-O
PITOT-STATIC LEAK TESTER TYPE D51600
Issue 5
November 2009
Page 16
(3) Checking Period
3 minutes
(4) Power Down Period: 2 minutes.
The Set Point value can be changed within this menu but the remaining parameters must be
changed via Main Menu 3 (refer to paragraph 7).
E. When the default Set Point is displayed, for example 130 knots (
Figure 9
), a new Set Point
can be entered by means of the +/ - keys.
Figure 9 Default Set Point
F. When the units selected are knots, values are incremented/decremented by an initial step of
75, between 0 knot and ± 75 knot, and thereafter in 5 knot steps to ±430 knots.
G. When the units selected are inHg, values are incremented/decremented by an initial step of
0.25, between 0 inHg and ±0.25 inHg, with a second step of 0.15 inHg between ±0.25 inHg
and ±0.40 inHg. Thereafter, values are incremented / decremented in 0.20 inHg steps to ±10
inHg.
H. When the units selected are mbar, values are incremented/decremented by an initial step of 9
mbar, between 0 mbar and ±9 mbar, with a second step of 6 mbar between ±9 mbar and ±15
mbar. Thereafter, values are incremented / decremented in 5 mbar steps up to ±340 mbar.
J. When units are feet, values are incremented / decremented by an initial step of 500, between
0 feet and 500 feet, and thereafter in 100 feet steps up to 10000 feet (Static only).
K. If the Static mode is selected and the preferred units are feet then the Pressure Of The Day
(POTD) must be entered following the setting of the Set Point value. (This provides the PSLT
differential pressure transducer with an accurate reference against which it can measure
pressure; thus enabling altitude switches to be tested.) POTD is entered in mbar. The default
value is 1013 mbar and it can be nudged up or down between 572 mbar (15000 ft) and 1069
mbar (-1500 ft) using the +/- keys in increments/decrements of 1 mbar, or more rapidly if the
key is held down.
NOTE:
Set the Altimeter Baro Set on the aircraft to 1013.25 mBar (i.e. standard
atmosphere), and not POTD as entered into the PSLT. Failure to do so will
result in an error between the altitude displayed on the PSLT and that
displayed by the Altimeter.
L. When the Set Point has been entered in the preferred measurement units, press the START
key. The screen displays a caption to check the appropriate hose (
Figure 10
). This is a
reminder to the Operator that inappropriate pressures applied to the aircraft may cause
damage.