(a) Remove the probe adapter from the probe.
NOTE: Dry off the pitot-static probe probes with a soft rag
____ when you use ethylene glycol.
CAUTION: MAKE SURE THAT YOU REMOVE ALL OF THE PIECES OF TAPE FROM
_______ THE PITOT-STATIC PROBE. THE SYSTEM WILL NOT OPERATE CORRECTLY WHEN THE TAPE IS ON THE PITOT-STATIC PROBE.
(b) Remove the vinyl adhesive tape from the probe pitot chamber drain hole.
S 205-095
(2) Examine the drain hole for unwanted materials and rough locations on the inner and outer surfaces (Ref 34-11-11/601).
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S 215-096
(3)
Make sure that the pitot-static probe does not show damage to the pitot tip or the static ports (Ref 34-11-11/601).
S 865-097
(4)
Close the STALL WARNING NO. 1 and NO. 2 circuit breakers on load control panels P6 and P18.
S 865-099
(5)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
TASK 34-11-00-865-100
5. The Auxiliary No. 1 Pitot System Leak Test__________________________________________
A. Standard Tools and Equipment
(1)
Air data test set, Castleberry AT700-2, Castleberry Instr & Avionics, Austin, TX; or equivalent
(2)
Pitot-static probe adapter kit, P/N AD-953-7, Nav-Aids Ltd., Montreal, Canada; or equivalent
(3)
Flow restrictors, control valves, cutoff valves, vinyl adhesive tape, and port seals as required
B. References
(1)
24-22-00/201, Manual Control
(2)
34-11-11/601, Pitot-Static Probe
C. Prepare for the Test
S 865-101
(1) Supply electrical power (Ref 24-22-00/201).
S 865-102
WARNING:_______YOU MUST OPEN THE FLAP LOAD RELIEF CIRCUIT BREAKER. YOU CAN CAUSE INJURY TO PERSONS.
(2) Open the FLAP LOAD RELIEF circuit breaker on the load control panel P6.
S 485-104
WARNING:_______MAKE SURE THAT THE PROBE HEAT IS NOT ON. YOU CAN CAUSE INJURY TO PERSONS.
(3) Install the pitot-static probe adapter on the lower right pitot-static probe.
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CAUTION:_______DO NOT EXTEND THE SEALS INTO THE PITOT DRAINS. YOU CAN CAUSE DAMAGE TO THE SURFACE IN THE AREA WHEN YOU REMOVE THE SEALS.
(a) Seal the pitot chamber drain hole on the bottom of the probe with vinyl adhesive tape.
NOTE: You will find the drain hole about 2.25 inches aft of
____
the probe tip.
CAUTION: MAKE SURE THAT YOU FLUSH THE PROBE ADAPTER WITH WATER
_______ BEFORE YOU ATTACH THE ADAPTER TO THE PROBE. YOU CAN CAUSE DAMAGE TO THE PROBE OR THE ADAPTER.
(b) Flush the probe adapter with water.
NOTE: A solution that has equal parts of ethylene glycol and
____ water must be used in temperatures between 32 degrees F and -40 degrees F.
(c) Install the probe adapter on the probe.
S 485-105
CAUTION: MAKE SURE THAT THE PITOT-STATIC PROBE HAS NO ADDED WEIGHT FROM
_______ THE TEST HOSES. YOU CAN BEND OR TWIST THE PITOT-STATIC PROBE OUT OF TOLERANCE.
(4) Connect the pneumatic test set to the pitot-static probe adapter:
(a)
Connect the pitot (pressure) source in the pneumatic test unit through the pitot control valve to the pitot cutoff valve.
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