DASH 8 200/300 AVIONICS 1
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1. How many pitot heads and static vents are there and where located: 2 of
each located either side of nose
2. Pilot head on the left side provides what: Captains ASI and #1 ADC
3. How many static ports are there on static plates and are they connected with
the opposite side: 3 ports and each are linked with there respective opposite side
4. Alternate side of static source selector continually supplies what regardless
of position: The cabin pressure controller
5. ADC test switch to test 1 activates. is there any Difference between test 2
position: 1000ft on capt altimeter
OFF flag on altimeter showing
Altitude alert light illuminating on co-pilot and pilot sides
Overspeed warning horn.
No difference in test 2 position just displayed on co-pilot side
6. Standard instruments include: ASI
ALT
VSI
COMPASS
CLOCK
STBY AH
STBY ALT
7. Stanby AH powered from: 28V DC Essential bus
8. ASI powered from: Pitot/Static system
9. ALT powered from: ADC which gets info from
Baro setting on alt
Static vents
10. VSI powered from: ADC which draws info from STATIC vent
11. STBY ALT is powered by: Directly from STATIC source and is independant of
ADC
12. CLOCK internal power and display power: Internal power supplied from inter-
nal battery
Display powered by 28V DC main BUS
13. FO/CAPT ELAPSED time is zero'd when: FO at end of flight
CAPT at end of day
14. How is DME frequency tuned: automatically paired with VOR unless not collo-
cated
15. RMI's are power by what: opposite side AHRS There fore
CAptain powered by #2 AHRS
Co-pilot powered by #1 AHRS
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16. To directy change the active NAV frequency what button do you push: -
HOLD ACT for 2 seconds
17. IF DME tuned where will it be displayed: EHSI
Remote DME display
18. How do you hold a DME: press hold button on cockpit panel above EADI and
it will hold that DME freq
19. Marker beacon light are displayed where: On PANEL above EADI and on
bottom right corner of EADI
20. MKR beacon audio can be controlled from: Audio control panel
21. ADF needles can be displayed on RMI by: selecting pointer switches to ADF
on RMI
22. Where are all NAV equipment receivers stored: Avionics rack
23. IF ADF selected to ANT which way will the kneedles park: at 270 degree
position
24. How many transponders installed and how many can be used at one time: 2
installed
1 to be used at a time
25. What source do both transponder use for Mode C operations: normally #1
ADC however in the event of a failure of #1 it will automatically use #2 ADC
26. Ident buttons located where and when pressed how long do is transmit
ident: one on transponder
one on each pilot control column
idents for 20seconds
27. AHRS stand for: Attidute heading reference system
28. AHRS system is made up off: Attitude and heading reference Unit
Attitude and heading control panel
Flux valve
29. AHRU must be connected to how many ADC to work: 1 ADC
30. AHRU sense: angular acceleration and deceleration
31. AHRU power supply 300series: Left AHRU is powered by
LEFT ESS BUS Primary
Right ESS bus Secondary
Right AHRU is powered by
Right MAIN BUS primary
Left ESS bus secondary
32. Why 2 power sources of AHRU: to prevent AHRS from having to reinitialise in
flight
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DASH 8 200/300 AVIONICS 1
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33. #1 AHRS is connected to what displays: CAPT EADI and EHSI
Copilot RMI
34. #2 AHRS is connected to what displays: Copilot EADI and EHSI
CAPT RMI
35. AHRS faults
DATA INVALID: both AHRU are invalid or data mismatch
36. AHRS faults
Roll mismatch: roll data different exceeds 6 degrees
37. AHRS faults
Pitch mismatch: Pitch data differential exceeds 6 degrees
38. AHRS faults
HSI HDG mismatch: HDG out by more than
6 degrees level flight
12 degrees in turn
39. AHRS alignment mode requires the aircraft to be: 60seconds on the ground
stationary
90 seconds in the air level and unaccelerated flight
40. When on ground can aircraft loading and engine starting be undertaken
when AHRS initialisation underway: yes
41. can AHRS alignment be undertaken manually: yes push and hold ALIGN for
2 seconds
42. AHRS normal mode is when: ADC senses airspeed and applies compensation
to AH due acceleration
43. Slaved mode is when
how is it indicated: AHRS uses Flux valve to show correct magnetic heading on
EHSI
indicated by + I O symbol on EHSI
44. Basic mode with regard to AHRS is when: Attitude is not compensated for
acceleration errors by ADC
45. FLASHING basic on ground means: TAS data from opposite side ADC is not
available
46. How is basic mode indicated: BASIC light illuminates on respective AHRS
control panel
47. SLAVE mode regarding AHRS is when and how is it indicated: The Flux
valve no longer feeds info to AHRS EHSI must be set manually.
Annunciates by SLAVE appearing on AHRS control panel.
Push DG button to select DG mode and adjust DG manually by DGSLEW +/-
48. When DG mode entered what must pilots avoid: Shallow constant banked
turns
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49. Prohibited to take off if what is wrong with AHRS system: only 1 AHRS
available
Basic light illuminated
DG mode active
Basic light flashing
50. Honeywell (old style) AHRS take how long to initialise: 3 mins
51. VG erect switch does what on Honeywell system: Sends fast vertical erect
commands to AHRU
52. Test function on Honey well does what: All altitude and heading flags appear-
ing for 2.5seconds then
ALL AHRS control lights illuminate
EADI shows 10degrees nose pitch up
EADI shows 20degree bank to left
EHSI show turn left at 3 degrees second
53. 200 series AHRS power sources: Left AHRU is powered by
LEFT ESS BUS Primary
Right ESS bus Secondary
LEFT 26V AC BUS
LEFT 400hz AC bus
Right AHRU is powered by
Right MAIN BUS primary
Left ESS bus secondary
RIGHT 26V AC BUS
RIGHT 400HZ AC BUS
54. IF DC power source is lost to Honeywell AHRS system what is indicated: -
AUXPR on Control panel
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