11/3/22
AIM
PHRASEOLOGY
−
YOUR ADS
−
B TRANSMITTER APPEARS TO BE
INOPERATIVE/MALFUNCTIONING. STOP ADS
−
B
TRANSMISSIONS.
(b)
ATC will inform the flight crew if it
becomes necessary to turn off the aircraft’s ADS
−
B
transmitter.
PHRASEOLOGY
−
STOP ADS
−
B TRANSMISSIONS.
(c)
Other malfunctions and considerations:
Loss of automatic altitude reporting capabilities
(encoder failure) will result in loss of ATC altitude
advisory services.
4.
Procedures for Accommodation of Non
−
ADS
−
B Equipped Aircraft:
(a)
Pilots of aircraft not equipped with
ADS
−
B may only operate outside airspace designat-
ed as ADS
−
B airspace in 14 CFR §91.225. Pilots of
unequipped aircraft wishing to fly any portion of a
flight in ADS
−
B airspace may seek a deviation from
the regulation to conduct operations without the
required equipment. Direction for obtaining this
deviation are available in Advisory Circular 90
−
114.
(b)
While air traffic controllers can identify
which aircraft are ADS
−
B equipped and which are
not, there is no indication if a non
−
equipped pilot has
obtained a preflight authorization to enter ADS
−
B
airspace. Situations may occur when the pilot of a
non
−
equipped aircraft, without an authorization to
operate in ADS
−
B airspace receives an ATC
−
initiat-
ed in
−
flight clearance to fly a heading, route, or
altitude that would penetrate ADS
−
B airspace. Such
clearances may be for traffic, weather, or simply to
shorten the aircraft’s route of flight. When this
occurs, the pilot should acknowledge and execute the
clearance, but must advise the controller that they are
not ADS
−
B equipped and have not received prior
authorization to operate in ADS
−
B airspace. The
controller, at their discretion, will either acknowledge
and proceed with the new clearance, or modify the
clearance to avoid ADS
−
B airspace. In either case,
the FAA will normally not take enforcement action
for non
−
equipage in these circumstances.
NOTE
−
Pilots operating without ADS
−
B equipment must not
request route or altitude changes that will result in an
incursion into ADS
−
B airspace except for safety of flight;
for example, weather avoidance. Unequipped aircraft that
have not received a pre
−
flight deviation authorization will
only be considered in compliance with regulation if the
amendment to flight is initiated by ATC.
EXAMPLE
−
1.
ATC:
“November Two Three Quebec, turn fifteen
degrees left, proceed direct Bradford when able, rest of
route unchanged.”
Aircraft:
“November Two Three Quebec, turning fifteen
degrees left, direct Bradford when able, rest of route
unchanged. Be advised, we are negative ADS
−
B equipment
and have not received authorization to operate in ADS
−
B
airspace.”
ATC
: “November Two Three Quebec, roger”
or
“November Two Three Quebec, roger, turn twenty degrees
right, rejoin Victor Ten, rest of route unchanged.”
2.
ATC:
“November Four Alpha Tango, climb and
maintain one zero thousand for traffic.”
Aircraft:
“November Four Alpha Tango, leaving eight
thousand for one zero thousand. Be advised, we are
negative ADS
−
B equipment and have not received
authorization to operate in ADS
−
B airspace.”
ATC:
“November Four Alpha Tango, roger”
or
“November Four Alpha Tango, roger, cancel climb
clearance, maintain eight thousand.”
REFERENCE
−
Federal Register Notice, Volume 84, Number 62, dated April 1, 2019
e. ADS
−
B Limitations.
The ADS
−
B cockpit display of traffic is NOT
intended to be used as a collision avoidance system
and does not relieve the pilot’s responsibility to “see
and avoid” other aircraft. (See Paragraph 5
−
5
−
8, See
and Avoid). ADS
−
B must not be used for avoidance
maneuvers during IMC or other times when there is
no visual contact with the intruder aircraft. ADS
−
B is
intended only to assist in visual acquisition of other
aircraft. No avoidance maneuvers are provided or
authorized, as a direct result of an ADS
−
B target
being displayed in the cockpit.
f. Reports of ADS
−
B Malfunctions.
Users of ADS
−
B can provide valuable assistance in
the correction of malfunctions by reporting instances
of undesirable system performance. Since ADS
−
B
performance is monitored by maintenance personnel
rather than ATC, report malfunctions to the nearest
Flight Service Station (FSS) facility by radio or
telephone, or by sending an email to the ADS
−
B help
desk at adsb@faa.gov. Reports should include:
1.
Condition observed;
Surveillance Systems
4
−
5
−
19