27-11-00
 ALL  ú ú 03 Page 534 ú Feb 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 2)  Pressurize the Captain's and the First Officer's pitot static systems to 232 knots maximum.
 NOTE: Use the airspeed indicator on the primary flight
____
 display to read the pressure.

 3)  Make sure the lockout actuator stays in the extended position (not locked out).
 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 4) Increase the pitot static pressure slowly to 245 knots minimum. 5) Make sure the lockout actuator moves to the retracted
 position (locked out) in 45 seconds. 6) Turn the control wheels 80 degrees in each direction. 7) Make sure the movement of the outboard aileron trailing
 edge is not more than | 0.50 degree (| 0.40 inch) from the neutral position.
 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 8) Decrease the pitot static pressure slowly to 225 knots. 9) Make sure the lockout actuator moves to the extended position (not locked out) in 45 seconds.
 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 10) Decrease the pitot static pressure to ambient.
 (c)  Procedure 3 1) Move the flap control lever to the FLAP UP detent to retract the leading edge group "A" flaps.
 2)  Open this circuit breaker and attach a DO-NOT-CLOSE tag: a) P7 Overhead Circuit Breaker Panel
 -7A14 ADC R PWR
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-11-00
 ALL  ú ú 03 Page 535 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 3)  Pressurize the Captain's pitot static system to 232 knots maximum.
 NOTE: Use the Captain's airspeed indicator on the primary
____
 flight display to read the pressure.

 4)  Make sure the lockout actuator stays in the extended position (not locked out).
 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 5) Increase the pitot static pressure slowly to 245 knots minimum. 6) Make sure the lockout actuator moves to the retracted
 position (locked out) in 45 seconds. 7) Turn the control wheels 80 degrees in each direction. 8) Make sure the movement of the outboard aileron trailing
 edge is not more than | 0.50 degree (| 0.40 inch) from the neutral position.
 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 9) Decrease the pitot static pressure slowly to 225 knots. 10) Make sure the lockout actuator moves to the extended position (not locked out) in 45 seconds.
 CAUTION: DO NOT INCREASE OR DECREASE PITOT STATIC PRESSURE
_______ MORE THAN 4 KNOTS EACH SECOND. THIS IS TO PREVENT POSSIBLE DAMAGE TO THE LOCKOUT MECHANISM.
 11) Decrease the pitot static pressure to ambient. 12) Remove the DO-NOT-CLOSE tag and close this circuit breaker: a) P7 Overhead Circuit Breaker Panel
 -7A14 ADC R PWR
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-11-00
 ALL  ú ú 04 Page 536 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (d)  Procedure 4
 1)  Make sure the air data switch on the Captain's SOURCE SELECT module is in the L position and the air data switch on the first officer's SOURCE SELECT module is in the R position.
　
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