11. Instrumentation & Avionics Flashcards
Altimeter setting is the value to which the barometric pressure scale of the altimeter is set so the altimeter reads?
MSL
True altitude at field elevation
What is a consideration when using a hand held device for VFR navigation?
Position accuracy may degrade without notification
RAIM - Receiver Autonomous Integrity Monitoring
In the northern hemisphere a magnetic compass will normally indicate a turn toward the south when
The plane decelerates
ANDS - Accelerate on east/west heading compass goes north
Decelerate on east/west heading compass goes south
Turning error
LAN compass lags when turning either direction with a north heading
LES compass leads when turning either direction with a south heading
What situation requires a ADS-B
Overflying a Class C airspace below 10,000 MSL
ADS-B out req’d
A, B, C airspace
Class B Mode C Veil 30 NM radius SFC to 10,000’
Class C In airspace up to 10,000 MSL at 10 NM radius
Class D Not req’d
Class E Above 10,000 MSL over land
3000 to 10000 to 12 NM off shore
Not Req’d
D & G
E < 10,000’
under shelves of C
“Direct To” button is used to
Find shortest direction to any point
A total energy variometer senses
Airspeed changes and nulls out altitude change due to ascending or descending.
Altimeter readings
Watch for difference between 9500 & 19500
Big = hundreds
Med fat = thousands
small skinny = 10,000
If it is necessary to change the Kollsman window from 29.15 to 29.85 what change occurs?
The indicated altitude will increase 700’
Raising the Kollsman window knob to a higher Pbar will increase the indicated altitude.
1” = 10000
If you are operating a GLIDER equipped with a 4096 code radar beacon transponder and not in contact with an ATC facility, what is the transponder code you should be operating on (squawking)/
1202 to differentiate glider
1200 = General VFR code used by airplanes and other powered aircraft.
7700 = Emergency code used by aircraft in distress
In northern hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate
correctly on a northern or southern heading
A GPS with expired database may be used
under VFR for situational awareness
During flight when are compass indications accurate?
Straight & level unaccelerated flight
In the northern hemisphere, a mag compass will normally indicate an initial turn toward the west and then go back to the east if
A right turn is made from a north heading.
Glider is turning toward the east BUT the compass initially indicates west due to turning error lag.
LAN = compass lags on a northern heading
When activated an ELT emergency locator beacon will transmit on ? frequency on old models and ? frequency on new models.
406 Mhz for new models. Aircraft’s ID and location to satellite.
121.5 & 243.0 for older models. No aircraft ID
How many GPS satellites are req’d to yield a 3 dimensional position long, lat, alt and time solution?
4
3 for position + 1 for altitude