ECS consists of which two systems?
pneumatic and air conditioning
Pneumatic air is supplied from where?
3rd stage bleed port (or APU)
What does the ECS provide?
- pre-cooled air for canopy and windshield seals inflation
- windshield demisting
- OBOGS
- windshield ice and rain removal
- anti-G suit inflation
- air conditioning
- pressurization for the cockpits
- cooling air for the avionic bays
How many BALDS sensor wires detect hot air leakages in either bleed duct or common bleed duct?
3
Cockpit temp range?
15C - 30C
What bus powers the ECS?
essential
T/F: It’s normal for L or R bleed light to blink after landing during braking.
True
What are the three stages of the pressurization cycle?
- unpressurized <8k’
- steady cabin alt (8k’) from 8k’ - 17.7k’
- steady differential (24kPa) from 17.7k’ - 45k’
CAB PRESS LO caution
cabin pressure <36.3kPa (off >37.1kPa)
BLEED L/R + L+R BLEED warning
integrity of L/R engine bleed pipe is lost
ECS BLEED caution
- bleed knob OFF or
- hot air leakage in ECS common ducts (+ BLEED LR + LR BLEED warnings)
- overpressure condition downstream of pressure regulating valve
- temperature downstream of the precooler exceeded 240C (no pilot assessment available)
AV AIR T caution
- temp in av bay > 20C for > 20 sec, or has exceeded 65C
- CABIN PRESS switch OFF
AIR COND caution
- temp downstream of the Cold Air Unit (CAU) compressor > 240C (+ECS BLEED)
- cockpit inlet air temp >85C
- cabin press switch is at OFF
- utility control box (UCB) failure during UCB PBIT
UCB caution
UCB not available (NOGO status)
CAB P SCHED caution
cabin press </= -1850ft or >/= 1500ft WRT nominal cabin pressure schedule, CABIN LP will be off
RAM AIR caution
avionics ram air scoop is open
L/R BLEED OFF light
L/R engine bleed shut-off valve is closed w engine ON
