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 (2)  Remove flush static port adapter and the vinyl adhesive tape from alternate static ports. Check that no deposits or roughness exists in or about either alternate static port.
 WARNING:_______ FAILURE TO REMOVE VINYL ADHESIVE TAPE FROM STATIC PORTS BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
 CAUTION:_______ MAKE SURE THAT YOU REMOVE ALL OF THE PIECES OF TAPE FROM THE EACH STATIC PORT. THE SYSTEM WILL NOT OPERATE CORRECTLY WHEN THE TAPE IS IN ITS POSITION.
 (3) (4) (5) (6) (7)  Replace all drain fitting caps.Reinstall magazine in flight recorder or turn off flight recorder, whichever is applicable (Ref 31-31-01).Connect static hose to rear of flight engineer's differential pressure gage on panel P4 (Ref 21-33-05).If installed, connect static hose to galley and toilet exhaust differential pressure switch in right crawlway, station 400 (Ref 21-26-05).Close all circuit breakers that were opened.

 EFFECTIVITY

 
 ALL  14 Page 525  Apr 25/9834-11-00
 PITOT-STATIC PROBE - REMOVAL/INSTALLATION
_________________________________________
 1.  General
_______
 A.  Special care should be taken in handling pitot-static probes. They must not be dropped, scratched or bent.
 CAUTION: PITOT-STATIC PROBES ARE DELICATE INSTRUMENTS AND CRITICALLY
_______ ALIGNED ON THE AIRPLANE. EXTREME CARE MUST BE EXERCISED WHEN INSTALLING, REMOVING OR HANDLING. DO NOTHING THAT PLACES ADDED WEIGHT ON PROBE.
 2.  Referenced Procedures
_____________________
 A.  20-30-01, Maintenance Practices
 B.  20-30-03, Maintenance Practices
 C.  20-30-04, Maintenance Practices
 D.  20-30-05, Maintenance Practices
 E.  34-11-01, Adjustment/Test
 3.  Equipment and Materials
_______________________
 A.  Nylon Cord - V-T-295, Type 1, Class 2, Size 9 (Ref 20-30-04).
 Miscellaneous Materials.

 B.  Sealant - BMS 5-95, Class B 1/2 (Ref 20-30-05)
 C.  Cleaner - BMS 11-7 (Ref 20-30-01)
 D.  Corrosion-Preventive Compound - MIL-C-16173, Grade 2 or MIL-C-11796, class 3 (Ref 20-30-03).
 4.  Remove Pitot-Static Probe (Fig. 401)
_________________________
 A.  Dig just under surface of sealant surrounding probe base to expose nylon cord. Grasp cord and pull out to break up sealant.
 B.  Remove six screws from probe mounting flange.
 C.  Grasping probe strut, loosen gasket and pull probe directly and gently out from airplane skin until three fittings on base of probe are exposed.
 D.  Unscrew the three hose fittings.
 CAUTION: APPLY COUNTERPRESSURE USING WRENCHES ON EACH SIDE OF FITTING
_______ DURING DISASSEMBLY TO PREVENT TUBING OR FITTING DAMAGE.
 E.  Disconnect electrical connector at base of probe and remove probe.
 F.  Cap three hose end that remain in airplane to prevent entry of foreign material unless a probe will be immediately installed.
 G.  Remove gasket and discard.
 5.  Install Pitot-Static Probe (Fig. 401)
__________________________
 CAUTION: TO PREVENT CONTAMINATION OF SYSTEM, ENSURE ABSENCE OF FOREIGN
_______
 MATERIALS IN PITOT-STATIC PROBE PRIOR TO INSTALLATION.

 A.  Remove old sealant from mounting hole. Clean and prepare surface and sides of mounting hole (Ref 20-30-01).
 B.  Remove protective covers from three pitot-static hoses in airplane.
 C.  Clean surface of alignment pins on base of probe and set new gasket in place.
 D.  Cover surface of alignment pins with thin coat of corrosion-preventive compound (Ref 20-30-03).
 EFFECTIVITY

 
 ALL  02 Page 401  Dec 25/8534-11-01

Pitot-Static Probe - Removal/Installation
Figure 401 (Sheet 1)

EFFECTIVITYALL

701 Page 402
34-11-01
Apr 15/74
UPPER LEFT PITOT PROBE  5` 
S2  S1  P 25` 
INBD  FWD
LOWER LEFT PITOT PROBE 
____ NOTE:  A ON AIRPLANES BEFORE TUBING AND HOSE RUNS MODIFIED 

UPPER LEFT PITOT PROBE LOWER LEFT PITOT PROBE
INBD FWD
A
NOTE:  ON AIRPLANE WITH TUBING AND HOSE RUNS MODIFIED (AD 75-04-06)
Pitot - Static Probe - Removal/Installation Figure 401 (Sheet 2)
EFFECTIVITY

ALL
707 Page 403
34-11-01
Apr 15/74
 E.  Remove material used to protect pitot tube during shipment and storage (if installed).
 CAUTION: FAILURE TO REMOVE PROTECTIVE COVER WILL CAUSE THE PITOT-STATIC
　
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