De Havilland DASH8 100 Series Maintenance Manual page 8

A test pushbutton is provided on the indicator, which when pressed, with power on,
causes the indicator to move to 1050 PPH (400 ±70 KG/H), indicated by a blue dot on
the face of the indicator dial and an equivalent digital display. Releasing the pushbutton
causes the pointer to fall to zero and a digital display of 0.0.
Loss of electrical power to the indicator causes the pointer to move off scale to below
zero and the digital display is blanked.
Mod 8/1738 introduces fuel flow indicators with specification changes as follows:
(1) FF (fuel flow) of 1200 PPH (550 KG/H) and higher (beyond indicator range) shall
read 1200 PPH (550 KG/H).
(2) Low range indication is extended from 80 PPH (35 KG/H) to 40 PPH (20 KG/H).
(3) The FDR outputs at pins J and K shall be 5V dc (max) for fuel flows of 1200 PPH
(550 KG/H) and higher.
(4) Normal fuel flow indications will be available without delay when fuel flow is reduced
below 1200 PPH (550 KG/H) or less.
MASTER
EFFECTIVITY: See Pageblock 73−32−00 page 1
D
S ERIES 100
AIRCRAFT MAINTENANCE MANUAL
73−32−00
Dec 20/2004
Page 2