B777 Air SystemsHome / Quiz Page / B777 Air Systems Boeing 777 Air Systems Boeing 777 Air Systems Revised 10/7/24 1 / 15 What action is required during preflight if the LANDING ALTITUDE EICAS message is displayed with the FWD and AFT OUTFLOW VALVE switches in AUTO? Select the FWD & AFT OUTFLOW valve swiotches to MAN Push the LDG ALT selector IN. Push the LDG ALT selector OUT. Both A and C are correct. 2 / 15 In the standby cooling mode, what will the pack automatically do if the airplane is not in an area of sufficient cooling? Increase airflow through the pack Fail the pack standby cooling controller. Shutoff the pack. Decrease airflow to half rate. 3 / 15 What action is required if a visible orange lip on a pressure relief valve is displayed? Advise maintenance of the open valve. No action is required. The valve is in its normally closed position. Set cabin altitude to less than 8000 ft. Position the landing altitude switch to AUTO. 4 / 15 When does a visible orange lip indicate on a pressure relief valve? Position the landing altitude switch to AUTO. Set cabin altitude to less than 8000 ft. No action is required. The valve is in its normally closed position. Advise maintenance of the open valve. 5 / 15 What happens if the FLT DECK TEMP control is moved to the 'C' position? It cancels input to the flight deck temperature controller. It closes the trim air valve and lowers the flight deck temperature. It opens the flight deck trim air valve. The pack temperature decreases. 6 / 15 How are cargo compartments controlled in terms of temperature ranges? Low is 0°C to 5°C - High is 15°C to 24°C Low is 5°C to 10°C - High is 20°C to 25°C Low is 10°C to 15°C - High is 25°C to 30°C Low is 4°C to 10°C - High is 18°C to 24°C 7 / 15 Forward Equipment Cooling system does not reconfigure automatically to override mode automatically for which of the following? When the FWD CARGO FIRE ARM switch is ARMED. When high air airflow is detected in flight. When both supply fans fail in flight. When the EQUIP COOLING switch is in OVRD. 8 / 15 If landing altitude is unavailable from the FMC (and not set in MAN), the EICAS advisory message LANDING ALT is displayed. The cabin altitude controller: Assumes a landing altitude of 200 ft. Assumes a landing altitude of 2000 ft. Assumes a landing altitude of 1000 ft. Assumes a landing altitude of 1500 ft. 9 / 15 If an overheat or other significant pack fault is detected, the pack shuts down automatically. An attempt to restore pack operation may not be made by pressing the AIR COND RESET switch. False. True. 10 / 15 The cabin altitude limiter closes both outflow valves if cabin altitude exceeds: 10 000 ft. 13 500 ft 14 000 ft. 15 000 ft. 11 / 15 What happens when you select the FWR CARGO A/C control to AUTO? The EICAS advisory message CARGO A/C FWD is displayed. Pack flow rate is modulated to achieve a pack outlet temperature between 5 and 43°C. The forward cargo heating system is shutoff and a selected temperature is displayed on the AIR synoptic. Packs operate at reduced flow rate. 12 / 15 What action is required during preflight if the LANDING ALTITUDE EICAS message is displayed with the FWD and AFT OUTFLOW VALVE switches in AUTO? Pull the LDG ALT Select the FWD and AFT OUTFLOW valve switches to MAN. Push the LDG ALT selector OUT. Push the LDG ALT selector IN. 13 / 15 Which of the followings are bleed air sources? Demand pump. Packs. APU and Ground Cart. Trim air. 14 / 15 In the cabin altitude controller cruise mode, maximum cabin altitude is 8,000 feet. The cabin altitude controllers enter cabin altitude controller descent mode at T/D or at initial descent of approximately _____ from cruise altitude, regardless of T/D. 1500 ft. 1000 ft. 500 ft. 750 ft. 15 / 15 What must be done to manually set a landing altitude? Adjust the trim air valves to the desired altitude. Press the AUTO button on the cabin altitude controller Check the FMC for automatic landing elevation adjustment. Pull the manual landing elevation selector out then set the required altitude. Your score is