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78-31-00
ALL ú ú N01 Page 504 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
WARNING:_______ MAKE SURE THERE ARE NO PERSONS OR EQUIPMENT IN THE AREA
AROUND THE THRUST REVERSERS. THE STEPS THAT FOLLOW WILL
CAUSE THE THRUST REVERSERS TO RETRACT, WHICH CAN CAUSE
INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(l) Put the applicable reverse thrust lever back to stow, to put the thrust reverser back to the stowed position. 1) Make sure the EICAS REV green indication changes to REV
amber while the thrust reverser sleeves move.
2) Make sure the EICAS REV amber indication goes off when the thrust reverser is in the stowed position and the interlock actuator is locked.
(m) Look at the EPCS Maintenance Page on the EICAS (use the steps above) to make sure the RP shows between -4 and 4 percent.
S 715-012-N00
(11) Do a test of the air/ground relay with the steps that follow:
(a) Open these circuit breakers and attach the DO-NOT-CLOSE tags:
1) On the P7 panel: a) 7F22 LANDING GEAR DSP & CONT PRI b) 7H8 GND SAFETY RELAY c) 7F23 LANDING GEAR DISP & CONT ALTN
WARNING: MAKE SURE THERE ARE NO PERSONS OR EQUIPMENT IN THE AREA
_______ AROUND THE THRUST REVERSERS. THE STEPS THAT FOLLOW MAY CAUSE THE THRUST REVERSERS TO EXTEND, WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(b)
Put the reverse thrust lever(s) for the applicable engine(s) in the reverse thrust position.
(c)
Visually examine the thrust reverser(s) on the applicable engine(s) to make sure they did not extend.
WARNING: MAKE SURE THERE ARE NO PERSONS OR EQUIPMENT IN THE AREA
_______ AROUND THE THRUST REVERSERS. THE STEPS THAT FOLLOW WILL CAUSE THE THRUST REVERSERS TO EXTEND, WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(d)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
1) On the P7 panel: a) 7F22 LANDING GEAR DSP & CONT PRI b) 7H08 GND SAFETY RELAY c) 7F23 LANDING GEAR DISP & CONT ALTN
(e)
Visually examine the thrust reverser(s) on the applicable engine(s) to make sure they extended.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
78-31-00
ALL ú ú N01 Page 505 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(f) Put the applicable reverse thrust lever(s) back to the stow position.
NOTE: The thrust reverser will retract.
____
S 715-013-N00
(12) Do a check of the extension and retraction time of the thrust reverser.
WARNING: MAKE SURE THERE ARE NO PERSONS OR EQUIPMENT IN THE AREA
_______ AROUND THE THRUST REVERSERS. THE STEPS THAT FOLLOW WILL CAUSE THE THRUST REVERSERS TO EXTEND, WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(a) Move the applicable reverse thrust lever to the full reverse position.
NOTE: Be prepared to time the extension of the thrust reverser
____
sleeves.
(b) Make a record of the time for the thrust reverser to fully extend.
NOTE: The deployment time must not be more than 3.0 seconds
____ from the stowed to the fully deployed position.
(c)
Move the applicable reverse thrust lever to the stow position. NOTE: Be prepared to time the retraction of the thrust
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