S 144-003
WARNING:_______DO NOT TOUCH THE PROBE WHEN THE PROBE HEAT IS ON. YOU CAN GET BURNED WHEN THE PROBE HEAT IS ON.
(2) Remove the sealant from around the bottom of the pitot-static probe (AMM 51-31-01/201):
(a) Remove the top part of the sealant, around the bottom of the probe, to get to the nylon cord.
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A
747-400 MAINTENANCE MANUAL
SEE A
STATIC (S2) PRESSURE LINE ALIGN PIN CUTOUT
(2 LOCATIONS)
STATIC (S1)
PRESSURE LINE
PITOT PRESSURE
LINE
SEE B
GASKET
STRUT
BASE
A 1
ALIGN PIN CUTOUT
(2 LOCATIONS)
PRESSURE LINE STATIC (S2) SEE B
STATIC (S1)
PRESSURE LINE
PILOT
PRESSURE
LINE
NOTE: ONE OF FOUR EQUIVALENT INSTALLATIONS.
STRUT GASKET
1
AIRPLANES WITHOUT EXTENDED
STRUT PITOT-STATIC PROBE BASE
2
AIRPLANES WITH EXTENDED A 2
STRUT PITOT-STATIC PROBE
Pitot-Static Probe - Removal/Installation Figure 401 (Sheet 1)
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A
747-400
MAINTENANCE MANUAL
UPPER LEFT PITOT PROBE
LOWER LEFT PITOT PROBE
FWD
INBD
B
Pitot-Static Probe - Removal/Installation
Figure 401 (Sheet 2)
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A
747-400 MAINTENANCE MANUAL
SEE A
ALIGN PIN CUTOUT
(2 LOCATIONS)
STATIC (S2) SEE B
PRESSURE LINE
STATIC (S1)
PILOT PRESSURE LINE
PRESSURE
LINE
GASKET
STRUT BASE
A 1
ALIGN PIN CUTOUT
(2 LOCATIONS)
STATIC (S2) SEE B
PRESSURE LINE
STATIC (S1)
PILOT PRESSURE LINE
PRESSURE
LINE
____ONE OF FOUR EQUIVALENT
NOTE: INSTALLATIONS.
STRUT GASKET 1
AIRPLANES WITHOUT EXTENDED
STRUT PITOT-STATIC PROBE
BASE
2 AIRPLANES WITH EXTENDED
A2
STRUT PITOT-STATIC PROBE
Pitot-Static Probe - Removal/Installation Figure 401 (Sheet 3)
G23991
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A
747-400
MAINTENANCE MANUAL
UPPER LEFT PITOT PROBE
LOWER LEFT PITOT PROBE
____ LEFT SIDE SHOWN.
NOTE: RIGHT SIDE SIMILAR.
FWD
INBD
B
Pitot-Static Probe - Removal/Installation
Figure 401 (Sheet 4)
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