Garmin G1000 Manual

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850367
HAZARD AVOIDANCE
Figure 6-80  Winds Aloft at 24,000 Feet 
To	display	the	Winds	Aloft	legend	(Figure	6-81),	select	the LEGEND	Softkey	when	Winds	Aloft	is	
selected for display.
Figure 6-81  Winds Aloft Data with Legend
Headwind	and	tailwind	 components	 aloft	are	available	 inside	the	Profile	 View	on	the	 Navigation	 Map	Page		
(Figure	 6-82).		The	displayed	 components	 are	relative	 to	current	 aircraft	altitude	 and	track,	 but	not	to	aircraft	
speed.  
						

							Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A368
HAZARD AVOIDANCE
Figure 6-82  Navigation Map Page with Winds Aloft Data on Profile View
Wind Component 
Velocity and Direction 
Arrows
Winds Aloft Data Age
Altitude Scale
Profile View 
Path Enabled
Arrows	 pointing	 to	the	 left	indicate	 headwind	 components;	 tailwind	component	 arrows	point	to	the	 right,	
as	shown	in	Table	6-8.
Headwind 
Symbol
Tailwind 
Symbol
Headwind/Tailwind 
Component
NoneNoneLess than 5 knots
5 knots
10 knots
50 knots
Table 6-8  Profile View Headwind/Tailwind Component Symbols  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850369
HAZARD AVOIDANCE
Showing/Hiding Profile View (containing winds aloft data)
1) Select the Navigation Map Page.
2) Select the PROFILE Softkey.
Or:
1) Press the MENU Key.
2) Turn the large FMS Knob to highlight ‘Show Profile View’ or ‘Hide Profile View’ (choice dependent on current 
state) and press the ENT Key.
Winds	Aloft	data	inside	 the	Profile	 View	is	enabled	 by	default	 when	the	Profile	 View	is	displayed	 on	the	
Navigation	Map	Page.		This	behavior	can	be	changed	on	the	Navigation	Map	Page.
Enabling/disabling winds aloft data display in Profile View:
1) Select the Navigation Map Page.
2) Press the MENU Key.
3) With Map Setup highlighted, press the ENT Key (Figure 6-83).
4) Turn the small FMS Knob to select the Profile Group and press the ENT Key (Figure 6-84).
5) Turn the large FMS Knob to select ‘Profile Winds’ (Figure 6-85).
6) Turn the small FMS Knob to select ‘On’ or ‘Off’.
7) Press the FMS Knob or CLR Key to return to the Navigation Map Page with the changed settings.
Figure 6-84  Navigation Map Page Setup Menu
Figure 6-83  Navigation Map Page Menu
Figure 6-85  Navigation Map Page Setup Menu, Weather Group  
						

							Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A370
HAZARD AVOIDANCE
PIREPS
Pilot	Weather	 Reports	(PIREPs)	 describe	in-flight	weather	encountered	 by	pilots.	 	 A	PIREP	 may	contain	
unforecast	 adverse	weather	 conditions,	 such	as	low	 in-flight	 visibility,	 icing	conditions,	 wind	shear,	 turbulence,	
and	type	of	aircraft	flown.		PIREPs	are	issued	as	either	Routine	(UA)	or	Urgent	(UUA).
Figure 6-86  PIREPs on the Weather Data Link (GFDS) Page
Instructions for 
Viewing PIREP  Text
PIREP
Selected
Urgent 
PIREP
Displaying PIREP text:
1) Select the Weather Data Link (GFDS) Page.
2) Press the MORE WX Softkey.
3) Press the PIREPS Softkey.
4) Press the RANGE Knob and pan to the desired weather report.  A gray circle will appear around the weather 
report when it is selected.
5) Press the ENT Key.  The PIREP tex is first displayed in a decoded fashion, then as raw text.
6) Use the FMS Knob or the ENT Key to scroll through the PIREP text.
7) Press the FMS Knob or the CLR Key to close the PIREP text window and return to the Weather Data Link (GFDS) 
Page.  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850371
HAZARD AVOIDANCE
Figure 6-87  PIREP Text on the Weather Data Link (GFDS) Page
Decoded PIREP Text
Raw PIREP Text
To	display	 the	PIREP	 legend	(Figure	 6-88), select the LEGEND	Softkey	 when	PIREPs	 or	AIREPs		 are	selected	
for display.
The	PIREP	color	is	determined	by	the	type	(routine	or	urgent).
Figure 6-88  PIREPs Legend
TFRS
 NOTE:  Temporary Flight Restriction (TFR) data from GFDS is only available in the United States (not 
including any U.S. territories.)  Refer to fly.garmin.com/fly-garmin/gfds-weather for GFDS product coverage 
information.
In	 the	 United	 States,	the	FAA	 issues	 Temporary	 Flight	Restrictions	 (TFRs)	to	designate	 areas	where	 flight	is	
restricted.		 TFRs	are	issued	 to	restrict	 flight	for	a	variety	 of	reasons	 including	 national	security,	 law	enforcement,	
firefighting,	 natural	disasters.,	 airshows,	and	large	 sporting	 events.		TFRs	may	be	issued	 at	any	 time,	 and	TFR	
data	 displayed	 on	the	 G1000	 is	only	 intended	 to	supplement	 official	TFR	information	 obtained	from	Flight	
Service	Stations	(FSS),	and	air	traffic	control.
The	age	of	TFR	 data	is	not	 shown;	 however,	 if	TFR	 data	is	not	 available	 or	has	 expired,	 the	system	 displays	
'TFR	N/A'	in	the	upper-left	corner	of	maps	on	which	TFRs	can	be	displayed.  
						

							Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A372
HAZARD AVOIDANCE
Figure 6-89  TFR Data on the Weather Data Link (GFDS) Page
TFR Summary Data
TFR 
Selected 
with Map Pointer
Displaying TFR  Data:
1) Select the Weather Data Link (GFDS) Page or Navigation Map Page.
2) Press the RANGE Knob and pan the map pointer over a TFR to highlight it.   The system displays TFR summary 
information above the map.
3) Press the ENT Key.  The system displays a pop-up menu.
4) If necessary, turn the FMS Knob to select 'Review Airspaces' and press the ENT Key.  The system displays the 
TFR Information window.
5) Press the FMS Knob or the CLR Key to remove the TFR Information window.
Figure 6-90 Full Text for Selected TFR  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850373
HAZARD AVOIDANCE
The	setup	 menus	 for	the	 Navigation	 Map	Page	 control	 the	map	 range	 settings	 above	which	 TFR	data	is	
decluttered	 from	the	display.		 If	a	map	 range	 larger	 than	the	TFR	 product	 map	range	 setting	 is	selected,	 the	TFR	
product data is removed from the map.  
Maps	other	than	the	Navigation	Map	Page	use	settings	based	on	those	selected	for	the	Navigation	Map	Page.
Setting up and customizing TFR data for maps on which TFR data can be displayed:
1) Select the Navigation Map Page.
2) Press the MENU Key.
3) With Map Setup highlighted, press the ENT Key (Figure 6-91).
4) Turn the small FMS Knob to select the Aviation Group and press the ENT Key (Figure 6-92).
5) Turn the large FMS Knob to scroll to the TFR product range setting (Figure 6-93).
6) Turn the small FMS Knob to scroll through options (Off, range settings).
7) Press the ENT Key to select an option.
8) Press the FMS Knob or CLR Key to return to the Navigation Map Page with the changed settings.
Figure 6-92  Navigation Map Page Setup Menu
Figure 6-91  Navigation Map Page Menu
Figure 6-93  Navigation Map Page Setup Menu, Weather Group  
						

							Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A374
HAZARD AVOIDANCE
ABNORMAL OPERATIONS
If	the	 G1000	 cannot	complete	 a	GFDS	 weather	 data	request,	 one	or	more	 messages	 will	appear	 in	the	 request	
status window.
Weather Request 
Status Message
Description
Auto requests inhibited
Send manual request 
to reset.
The system has disabled automatic weather data requests due to excessive \
errors.  Automatic 
weather data requests have stopped.  Send a manual weather data request to resume automatic 
updates.
Auto update retry:  ## 
Seconds
The system will attempt another automatic weather data request after an e\
rror occurred during the 
previous request.  Timer counts down until the next automatic request occurs.
GFDS Comm Error [2]A communications error has occurred with the GIA.  The G1000 should be serviced.
GFDS Comm Error [4]This occurs if multiple automatic weather data requests have recently fai\
led, or a GIA is off-line.
GFDS Comm Error [5]This can occur if the Iridium or GFDS networks are not accessible.  Check Iridium signal strength.  If 
this error persists, the G1000 should be serviced. 
GFDS Comm Error [6]A communications error has occurred.  It this error persists, the G1000 should be serviced.
GFDS Comm Error [7]A weather data transfer has timed out.  Check Iridium signal strength and re-send the data request.
GFDS Comm Error [8]A server error has occurred or invalid data received.
GFDS Login InvalidThere is a problem with the GFDS registration.  Contact Garmin Flight Data Services at 1-866-739-
5687 in the United States or 913-397-8200, ext. 1135 for assistance.
GFDS Server 
Temporarily Inop
The GFDS weather data server is temporarily out of service, but is expected to return to service in 
less than 30 minutes.
GFDS Server InopThe GFDS weather data server will be out of service for at least 30 minut\
es.
Invalid  Coverage AreaThe weather data request coverage area does not contain at least one of the following:  a waypoint, 
a flight plan, or a flight plan destination.  Verify at least one of the coverage options is enabled 
(checked) and contains required criteria, then re-send the data request.
NO GFDS SubscriptionThe system is not be currently subscribed to GFDS, or the access code is incorrect.  Verify the access 
code.  Contact Garmin Flight Data Services at 1-866-739-5687 in the United St\
ates or 913-397-
8200, ext. 1135 for assistance.
Reduce  Request AreaThe GFDS weather data request area exceeds size limits.  Reduce weather coverage area and re-
send data request.
Request CancelledThe user has cancelled a GFDS weather data request.
Requested area too 
large.  Reduce coverage 
area.
The size of the GFDS weather data request has exceeded limits.  Reduce the size of the coverage area 
and try the weather data request again.
Request Failed - Try 
Again
The weather data request timed-out.  Re-send data request.
Table 6-9  Abnormal GFDS Request Status Messages   
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850375
HAZARD AVOIDANCE
WORLDWIDE WEATHER IN REVERSIONARY MODE
When	the	G1000	 is	operating	 in	Reversionary	 Mode,	only	those	 weather	 products	 which	can	be	displayed	
on	 the	 PFD	 Inset	 map	will	be	available	 for	display	 (see	Table	 6-6	for	a	list	 of	weather	 products	 and	their	
associated	map	availability).		
If	manual	 weather	 data	requests	 were	enabled	 prior	to	entering	 Reversionary	 Mode,	no	new	 GFDS	 weather	
data	can	be	retrieved	 while	operating	 in	Reversionary	 Mode.		If	automatic	 weather	data	requests	 were	enabled	
prior	 to	Reversionary	 Mode	operation,	 the	system	 will	continue	 the	automatic	 data	requests	 in	Reversionary	
Mode	(provided	automatic	requests	have	not	been	inhibited	due	to	a	system	error).  
						

							Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A376
HAZARD AVOIDANCE
6.3 AIRBORNE COLOR WEATHER RADAR
SYSTEM DESCRIPTION
The	 optional	 Garmin	GWX	68	Airborne	 Color	Weather	 Radar	is	a	four-color	 digital	pulsed	 radar	with	6.5	
kilowatts	 of	output	 power.		 It	combines	 excellent	range	and	adjustable	 scanning	profiles	with	a	high-definition	
target	 display.		 The	pulse	 width	 is	four	 microseconds	 (µs)	on	all	ranges	 except	 the	2.5	 nm	 range.		 The	GWX	 68	
uses	a	one	 µs	pulse	 width	 at	this	 range	 to	reduce	 the	targets	 smearing	 together	on	the	 display	 for	better	 target	
definition at close range.
The	Socata	 TBM	850	uses	 a	10-inch	 phased	array	antenna	 that	is	fully	 stabilized	 to	accommodate	 30º	of	pitch	
and roll.
To	 focus	 radar	scanning	 on	specific	 areas,	Sector	 Scanning	 offers	pilot-adjustable	 horizontal	scan	angles	 of	
20º,	40º,	60º,	or	90º.	 	 A	vertical	 scanning	 function	helps	to	analyze	 storm	tops,	gradients,	 and	cell	buildup	
activity at various altitudes.
Radar	features	include:
•	 Extended	 Sensitivity	Time	Constant	 (STC)	logic	that	automatically	 correlates	distance	of	the	 return	 echo	with	
intensity, so cells do not suddenly appear to get larger as they get closer.
•	 WATCH®	(Weather	 ATtenuated	 Color	Highlight)	 helps	identify	 possible	 shadowing	 effects	of	short-range	 cell	
activity,	identifying	 areas	where	 radar	return	 signals	 are	weakened	 or	attenuated	 by	intense	 precipitation	 (or	
large	areas	of	lesser	precipitation)	and	may	not	fully	reflect	the	weather	behind	a	storm.
•	 Weather	Alert	that	looks	 ahead	 for	intense	 cell	activity	 in	the	 80-320	 nm	range,	 even	if	these	 ranges	 are	not	
being	monitored.
PRINCIPLES OF PULSED AIRBORNE WEATHER RADAR
The	 term	 RADAR	 is	an	 acronym	 for	RAdio	 Detecting	 And	Ranging.		 Pulsed	radar	locates	 targets	by	transmitting	
a	microwave	 pulse	beam	 that,	upon	 encountering	 a	target,	 is	reflected	 back	to	the	 radar	 receiver	 as	a	return	
echo.	 	 The	microwave	 pulses	are	focused	 and	radiated	 by	the	 antenna,	 with	the	most	 intense	 energy	in	the	
center	 of	the	 beam	 and	decreasing	 intensity	near	the	edge.		 The	same	 antenna	 is	used	 for	both	 transmitting	 and	
receiving.		The	returned	signal	is	then	processed	and	displayed	on	the	G1000	MFD.
Radar	detection	 is	a	two-way	 process	that	requires	 12.36	µs	for	 the	 transmitted	 microwave	pulses	to	travel	 out	
and	back	 for	each	 nautical	 mile	of	target	 range.		 It	takes	 123.6	 µs	for	 a	transmitted	 pulse	to	make	 the	round	 trip	
if a target is ten nautical miles away.
Airborne	 weather	radar	should	 be	used	 to	avoid	 severe	 weather,	 not	for	penetrating	 severe	weather.	 	 The	
decision	to	fly	 into	 an	area	 of	radar	 targets	 depends	 on	target	 intensity,	 spacing	between	 the	targets,	 aircraft	
capabilities,	 and	pilot	 experience.		 Pulse	type	weather	 radar	detects	 only	precipitation,	 not	clouds	 or	turbulence.		
The	 display	 may	indicate	 clear	areas	 between	 intense	returns,	 but	this	 does	 not	necessarily	 mean	it	is	 safe	 to	fly	
between	them.		Only	Doppler	radar	can	detect	turbulence.
Airborne	 weather	radar	has	other	 capabilities	 beyond	weather	 detection.		 It	also	 has	the	ability	 to	detect	 and	
provide	distance	to	cities,	mountains,	coastlines,	rivers,	lakes,	and	oceans.