D.
Flap/Slat Alternate-(Electric) Drive System - Test (Fig. 501)
NOTE: Make sure the TRAILING EDGE and LEADING EDGE lights on the P3
____ panel do not come on and that no TE flap or LE slat messages come on the EICAS display. If either the TE flap or LE slat EICAS message is displayed, find the part number of FSEU-2 and -3 in the forward cargo compartment. Then do the FSEU BITE procedure on FSEU-2 and -3 (FIM 27-51-00/101, Fig. 104A).
S 865-213
(1) Make sure the TE flap system is as follows:
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CAUTION: DO NOT OPERATE THE ALTERNATE DRIVE MOTOR CONTINUOUSLY FOR
_______ MORE THAN 12 MINUTES (2 FLAP CYCLES). DO NOT OPERATE THE MOTOR AGAIN UNTIL IT IS COOL FOR AT LEAST 3 MINUTES TO PREVENT DAMAGE TO THE MOTOR.
(a)
Make sure the TE flaps and LE slats are in the fully retracted position, and the flap control lever is in the zero (FLAPS UP) detent.
(b)
Make sure the position selector switch for the flap/slat alternate drive is in the NORM detent.
(c)
Push the arming switch for the slat alternate drive, on the P3 panel, to arm the slat alternate drive (switch light will come on).
S 715-214
(2)
Do the Flap/Slat Alternate Drive System test as follows:
(a)
Push the arming switch for the flap alternate drive, on the P3 panel, to arm the flap alternate drive (switch light will come on).
(b)
Turn the position selector switch, for the flap/slat alternate drive, to the 1-unit position.
(c)
Make sure the L and R needles, on the flap position indicator, move very quickly to the 1/2 position when the flaps start to extend.
(d)
Make sure the L and R needles, on the flap position indicator, move very quickly to the 1 position when the flaps extend to the 1-unit position.
(e)
Turn the position selector switch to the 5 and 15 unit positions.
NOTE: Let the flaps extend and stop at each position before
____ you move the position selector switch to the next detent.
(f)
Make sure the flaps move to the same position as the L and R needles on the flap position indicator.
(g)
Turn the position selector switch, for the flap/slat alternate drive, to the 20-unit position.
(h)
Make sure the flaps and slats move to the correct position.
(i)
Turn the alternate flaps/slats position selector switch to the 15-unit position.
(j)
Make sure the flaps and slats move to the correct position.
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WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM THE FLAPS AND SLATS. THE FLAPS AND SLATS WILL RETRACT WHEN THE ALTERNATE DRIVE IS DISARMED. INJURY TO A PERSON OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN THE FLAPS AND SLATS RETRACT.
(k)
Push the arming switches for the flap and slat alternate drives, on the P3 panel, to disarm the flap and slat alternate drives.
(l)
Make sure the flaps and slats move to the fully UP position.
(m)
Turn the position selector switch to the NORM detent.
(n)
Remove the power from the left hydraulic system (AMM 29-11-00/201).
(o)
Remove the electrical power if it is not necessary (AMM 24-22-00/201).
TASK 27-51-00-735-161
6. TE Flap Load Relief - System Test_________________________________
NOTE: This is a scheduled maintenance task.
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