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13 Cards in this Set
- Front
- Back
Air System select switch
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Swaps between Air automatic controllers
Select illuminated means auto controller failed Manual illuminated locked in manual |
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ECON Switch
CAB ALT ------------- OFF |
Packs operate on low volume
CAB ALT - cabin >9500 ft OFF - manually selected OFF |
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NO MASKS guarded switch
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Red light illuminates when cabin approaching 15,000 ft and masks in crew module have NOT deployed
HOLD 3 Seconds to deply |
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CABIN AIR SWITCH (red guard)
SMOKE ----------- OFF |
SMOKE - detected in main cargo (upper)
OFF - Closes Conditioned Air SOV Reduces to single pack ops Manual - crew must turn 2 packs OFF |
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TRIM AIR switch
AVNCS OVHT ----------- OFF |
Avncs Ovht - overheat sensed in avionics compartment (assumes duct rupture, closes both Trim Air PRVs (auto or manual)
OFF - commands both Trim Air PRVs to close (manual) |
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AVNCS switch
FLOW --------- OVRD |
FLOW -
Low avionics air flow Cabin airflow insufficient for pressurization Cabin alt >10,000 ft OVRD - (auto or by pressing in manual) Closes venturi Exhaust fan - ON |
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BLEED switch(es)
PRESS ---------- OFF |
Operates in parallel with, and identical to MANF/TEMP Hi switch(es)
PRESS - Low air pressure (<11 psi) OFF - (manual) Bleed air valve commanded OFF |
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AIR switch(es) (red)
MANF ------------- TEMP HI |
Same function as BLEED switch
MANF - excessive temp detected outside manifold (failed or leaking) - Closes respective engine Bleed Valve TEMP HI - excessive temp IN manifold downstream of precooler. (Closes engine bleed auto) |
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1-2 ISOL / 1-3 ISOL switch(es)
ON ---------- DISAG |
switch inhibited in AUTO
ON - commands Isol valve OPEN DISAG - Isol valve not in commanded position / transit (light inhibited for 10 seconds in AUTO mode) |
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PACK Switch(es)
FLOW --------- OFF |
FLOW - packs ON but no flow OR packs OFF but flow present
OFF - pack commanded OFF manually (Ram Air Door commanded closed) |
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COCKPIT/COURIER/CARGO temp selectors
1 - Temp range 2 - Full Cold 3 - OFF |
1 - 65 deg to 85 deg (center = 75 deg)
2 - All 3 packs driven to Full cold 3 - respective Trim Air valve closed, "Zone Temp OFF" alert appears |
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One engine air source can supply air for _______
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2 packs or
1 pack + crossbleed start or 1 pack + wing anti/ice or 1 pack + 1 wing a/i + tail a/i |
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"Air System Test" alert when / what?
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When Annunciator Test is performed
Manf fail system Avncs fans Trim Air SOVs CAC Fans A/I ducts |