Notes Flashcards
VHF system provides:
a/c to stations
a/c to a/c
VHF in small a/c
2
VHF large a/c
3
VHF of a/c
118 - 136 MHz
transmit and receive RF signal for voice and data communication.
Transceiver
minimize static noise
Squelch
2 types of antenna
dipole - small
shark fin - large
Attendant’ Handset:
ATT:
FLT:
PA:
EMG:
ATT: call other attendants
FLT: call pilots
PA: address passengers
EMG: call flight crews (amber)
ELT
Emergency Locator Transmitter
2 of ELT purpose or types
- Impact
- Survival / Immersed
location of ELT
Empennage
ELT for the nearest tower for (?) hrs
42 hrs
MHz of ELT
121.5 MHz
ELT no. in land
at least 1
ELT no. at sea
at least 2
FDR
Flight Data Recorder
record parameters of a/c
Flight Data Recorder (FDR)
FDR records parameters minimum of (?)
88 parameter
CVR
Cockpit Voice Recorder
4 Channels of CVR
- Third crew member
- Co pilot
- Pilot
- Control panel area
makes 30mins recording off our audio channels on a CONTINUOUS MAGNETIC TAPE. Operation is automatic from engine st as rt until 5 mins after engine shutdown.
Cockpit Voice Recorder (CVR)
ULB
Underwater Locator Beacon
has in FDR & CVR, sends distress signal
Underwater Locator Beacon (ULB)
CVR reset (?) seconds if it is on ground and parking brakes is set.
2 seconds
VRU
Voice Recorder Unit
makes 30mins recording off our audio channels on a CONTINUOUS POLYAMIDE TAPE, and has a TEST switch for internal testing to be recorded.
Voice Recorded Unit (VRU)
CVR & VRU location
aft passenger compartment
ULD
Underwater Locator Device
activated when submerges to water
Underwater Locator Device (ULD)
provides usable signal for 30days
Underwater Locator Device (ULD)
when it receives a large amount of impact it sends a continuous signal to the nearest tower.
Emergency Locator Device (ELT)
Allows ground station to call an a/c or group of a/c using HF and VHF comm. w/out the flight crew having to continuously monitor the ground station’s frequency.
Selective Callinh System
PA Priorities:
Pilots
Attendants
Passengers
