TCH.1C-27J-2-27JG
2-49.1 NORMAL OPERATING (refer to figure
) , (refer to figure
) , (refer to
figure
16.Set the trim button to NOSE DOWN and maintain.
Check that the elevators move to 7.5
°
± 1 °
downwards. The normal pitch trim indicator must
show about 7.5 ° down. Release the normal trim
switch.
17.By the control wheel trim button, perform a complete
travel, from full nose up to full nose down (or vice
versa) and check that the manoeuvre time required is
20 ± 2 sec.
2-49.2 STAND-BY TRIM OPERATING CHECK (refer to
figure
) , (refer to figure
)
1.Ensure that the aircraft speed is set at 280 kts.
2.Raise the cover guard of the PITCH STBY switch and
verify that the ACAWS advisory message STBY
PITCH TRIM SEL appears on CMDU.
3.Set the PITCH STBY switch (2) to NOSE UP and
maintain. Check that the elevators move to 11.25 ° ±
1° upwards. The normal pitch trim indicator shows
about 11.25° up. Release the standby trim switch.
4.Set the PITCH STBY switch (2) to NOSE DN and
maintain. Check that the elevators move to 7.5 ° ± 1°
downwards. The normal pitch trim indicator shows
about 7.5° down. Release the standby trim switch.
5.By the PITCH STB switch (2), perform a complete
travel, from full nose up to full nose down (or vice
versa) and check that the manoeuvre time required is
20 ± 2 sec.
6.Simulate an aircraft low speed of 100 kts by setting a
dynamic pressure of 16.3 mbar in both channels.
(Cont'd)
27-30-10
2-392