Home
Flashcards
Preview
Saab 340B Acronyms
Home
Get App
Take Quiz
Create
LP Bleed Valve Closes when:
S witch to closed
A CM temp above 225C
D uct temp above 82C
F ire Handle Pulled
O ver temp (bleed air) 288C
O ver pressure (bleed air) 43 PSI
HP Bleed Valve Closes when:
M ain DC bus power lost
O ver temp (bleed air) 288C
O ver pressure above 76 PSI
F ire Handle Pulled
S hutdown Engine
Flight Control Computer (FCC) -Autopilot- Receives data from:
A HRS
R adio Altimeter
E FIS
N av Receivers
A ir Data Computer
A ltitude Preselector/ Alerter
L/R Generator Relay Automatically Opens when:
F ire handle pulled
E xternal power is being used
M alfunction detected by GCU (except over temp)
S tarting (between 0-55% Ng)
S witch OFF
Emergency Bus (a bet we forget)
A udio System backup power
B us-Tie relay connection function
E ngine Fire detection L/R
T ail Pipe Hot detection L/R
W arning System backup power
E mergency Voltage indicator
E mergency Avionics Bus (VHF Comm 1/ Stby Horizion)
S tandby Instrument lighting
Bus-Tie Relay Closes when:
G PU used
O ne Gen operating
L eft or both BAT switches ON
Ultility Bus
A ir in Aft Cargo
S upplementary A/C
P assenger Reading Light
H eat Function on TAMDAR
A ctive Noise Control
L av Function
T ea (Galley & Jug Heaters)
L Hot Bat Bus
B attery Voltage Indicator
D ome, Enterance, & Cargo Lights
F ire Handle
A HRS 1 Backup Power
C argo Fire Extinguisher
E ngine Fire Extinguisher
R Hot Bat Bus
B attery Voltage Indicator
R efueling/ De-fueling Power
F ire Handle
A HRS 1 Backup Power
C argo Fire Extinguisher
E ngine Fire Extinguisher
115 V AC- powered from respective BAT Bus (requires 28V)
F DR
R adar Stablization
O verhead Panel Lighting
G PWS/ TAWS
26 V AC- powered from respective BAT Bus (requires 28V)
C DI
A HRS (Heading Function Comparator)
R MI (Failure- RMI flag or CDI disappears)
Fire Handle Pulled
S ilences Fire Bell
A rms Squibs
C loses Fuel Shut-off Valve
R esets Fire Warnings
O pens Gen Relay
C loses Bleed Valve
AHRS 1 powers:
A P/FD
R MI 2
R adar Wx
M FD
D PU 1
D FDR
AHRS 2 powers:
A P/FD
R MI 1
M FD
D PU2
"Config" Warning
Takeoff
: WOW on ground AND PL above 64 degrees with:
-Flaps above 15 or
-One or both CL's not in MAX or
-Pitch Trim out of green range
When left engine started with FI STOP knob pulled
Landing
: Gear not down AND:
-Below 500' Radio Altitude
-One PL above 64 degrees
-Above & Flaps 20 or more
"Gear" Warning
One gear is up and:
- RA above 500' and
- One or Both PL above 64 degrees
Or Gear up and Flaps above 20
Anti-Skid Requirements
- Switch ON
- Landing Gear Handle Down
- PL Above FI or WOW activated
Deactives less than 20 KIAS
Accessory Gear Box (AGB) driven by Ng
H MU
O il Pump (Engine)
L P Fuel Pump (Main)
E ngine Alternator
S tarter/ Generator
Engine Protections
H MU- Limits Ng Speed to 110%
O verspeed & Drain Valve- 1573 Np Overspeed Protection
P rop Overspeed Governor- Blocks oil when RPM above 1452 PRPM
Engine Alternator powers:
D ECU
I gntition
N g Indication
Prop Gear Box (driven by power "prop" turbine -Np-) drives:
- P rop Overspeed Gov- Blocks oil flow above 1452 PRPM
- A C "Wild" Frequency Generator
- L ubrication (PGB oil) Pump
- P rop Control Unit- Changes blade angle
If you lose all oil pressure in PGB props feather to 50 degrees due to counter weights
Hydro Mechanical Unit (HMU) functions:
V ariable Inlet Guide Vanes (VIGV)
A nti-Ice/ Starter Bleed Valve (AISBV)
N g Speed Limiting (110%) shuts off fuel/ engine
E ngine Fuel Flow Metering (HP fuel pump)
S tores the Torque Motor
Torque Motor (TM) Controls Fuel for:
- C TOT
- A PR
- B ottom Governing
Can be locked out w/ CL going over max gate & back. Will lose reverse thrust capability on landing b/c no more bottom gov. Reset CL=Fuel Off.
Digital Electrical Control Unit (DECU) increases fuel to HMU via TM to provide:
B ottom Governing- Maintains 1040 PRPM, Full Reverse= 1200 RPM (-13 degree blade angle)
A utomatic Power Reserve (APR)- boosts TQ by 7% when engine fails (Autocoarsen must be on)
I TT- Internal Torque Temperature
T orque and Prop RPM indications
C onstant Torque on Takeoff (CTOT)
A uto Ignition- Stays on for 7 secs (Off at less than 62%)
N p Overspeed Protection- 1573 PRPM opens ODV
Autocoarsen Low Mode (55 degrees)
full feather = 84 degrees*
Armed Low:
- S witch ON
- O ne or both PL's above 64 degrees
- N g above 55%
- N e above 60%
Actived Low:
- Switch ON
- Good Engine Ng above 55%
- Bad Engine Ng below 55%
- Bad Engine Ne below 60%
Autocoarsen High Mode (55 degrees)
Armed High:
- S witch ON
- P L's above 64 degree
- T Q above 50%
- P 3 above 120 PSI
Activated High
- S witch ON
- P L's above 64 degrees
- T Q above 50%
- T Q diff of 25%
- B ad Engine TQ less than 50%
- B ad Engine P3 below 120 PSI
FI Stop
Opens when
: Gear extended
and
WOW or wheel speed above 25 kts
Closes when
: Gear retracted or WOW
and
wheel speed below 9 kts
Override knob opens FI when pulled (must be reset by mx. CONFIG warning occurs if open when left engine started)
BETA range
PL's (below FI) controls prop angle; CL's controls fuel off or feather
BETA Prop Angle
: 8 degrees (1040 PRPM) to -13 degrees (1200 PRPM, Full Reverse)
Author
vicoliveira
ID
163054
Card Set
Saab 340B Acronyms
Description
Saab 340B Acronyms
Updated
2012-07-19T18:50:46Z
Show Answers
Home
Flashcards
Preview