Fire Week 4 Emergency Lighting

emergency lighting function

guide passengers and crew to nearest exit in emergency

must automatically activate when required

emergency lighting system must be _______ of main lighting system

independent

emergency lighting must include

• Illuminated emergency exit marking and locating signs

• Sources of general cabin illumination

• Interior lighting in emergency exit areas

• Floor proximity escape path marking

• Exterior emergency lighting

emergency exit sign

• 10 passenger seats or more must have sign at each emergency exit

• Must have red letters at least 1.5” high on an illuminated white background

• Must have an area of at least 21 square inches excluding the letters

• Must be internally electrically illuminated or self-illuminated by other than electrical means

• Must have initial brightness of at least 400 microlamberts

illumination at each ___ interval cannot be less than ___ foot candle

40”, 0.01

lighting in emergency exit area

must be provided

must not be less than 0.02 foot candle

floor proximity emergency escape pat

must identify each exit from the emergency escape path

used when illumination more than 4ft above the floor are obscured

exterior emergency lighting

emergency lighting on exterior of aircraft

overwing emergency exit lighting

Illumination shall not be less than 0.03 foot candle on a 2 square foot area where an evacuee is likely to make their first step outside the cabin

emergency lighting battery

battery pack is independent power source for emergency lighting

activated during loss of power

emergency locator transmitter

Independent battery powered transmitter activated by excessive G forces (crash) or by water

signal transmitted is received anywhere in the world

121.5 ELT

before 2009

121.5 MHz for civil aviation

243 MHz for military

analog signal

406 ELT

after 2009

provides better coverage, location accuracy, identification of false alerts

triangulation tells you position of the signal within 2-5km

GPS tells you position within 100m

406 ELT transmits

Transmits digital signal every 50 seconds at 406.025 MHz at 5 Watts for at least 24 hours

ELT location

aft with the G-force sensor aligned with longitudinal axis

can be anywhere on helicopter

can be easily removed

ELT inspection

every 12 months for battery condition, operation of controls, crash sensor and strength of signal

at AMO with avionics shop

installing ELT

connect to antenna via coaxial cable and to remove panel in flight deck

test 5 minutes after each other for max 3 times

ELT switch

located on remote panel in flight deck to turn on

ON/OFF/ARM

underwater locating device

device fitted to CVR and FDR

used as location device and automatically activated when submerged

how is ULD powered

lithium battery that needs to be replaced every 6 years or as per manufacturer

when should an aircraft have FDR

always

when should an aircraft have CDR

when there are more than 30 passengers

ELT ON

testing or emergency

ELT OFF

end of flight or when transporting ELT

turns off G switch

ARM

arms G switch that turns on ELT during an accident