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6/17/21 

AIM 

(ADS-C) logon, pilots should discontinue voice 
position reports. 

NOTE

 

ATC will inform pilots that they are in “radar contact”: 

(a)

 when their aircraft is initially identified in the ATC 

system; and 

(b)

 when radar identification is reestablished after 

radar service has been terminated or radar contact lost. 
Subsequent to being advised that the controller has 
established radar contact, this fact will not be repeated to 
the pilot when handed off to another controller. At times, 
the aircraft identity will be confirmed by the receiving 
controller; however, this should not be construed to mean 
that radar contact has been lost. The identity of 
transponder equipped aircraft will be confirmed by asking 
the pilot to “ident,” “squawk standby,” or to change codes. 
Aircraft without transponders will be advised of their 
position to confirm identity. In this case, the pilot is 
expected to advise the controller if in disagreement with the 
position given. Any pilot who cannot confirm the accuracy 
of the position given because of not being tuned to the 
NAVAID referenced by the controller, should ask for 
another radar position relative to the tuned in NAVAID. 

d.  Position Report Items: 

1.  Position reports should include the follow-

ing items: 

(a) 

Identification; 

(b) 

Position; 

(c) 

Time; 

(d) 

Altitude or flight level (include actual 

altitude or flight level when operating on a clearance 
specifying VFR

on

top); 

(e) 

Type of flight plan (not required in IFR 

position reports made directly to ARTCCs or 
approach control); 

(f) 

ETA and name of next reporting point; 

(g) 

The name only of the next succeeding 

reporting point along the route of flight; and 

(h) 

Pertinent remarks. 

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3.  Additional Reports 

a.  The following reports should be made to 

ATC or FSS facilities without a specific ATC 
request: 

1. 

At all times. 

(a) 

When vacating any previously assigned 

altitude or flight level for a newly assigned altitude or 
flight level. 

(b) 

When an altitude change will be made if 

operating on a clearance specifying VFR

on

top. 

(c) 

When 

unable 

to climb/descend at a rate of 

a least 500 feet per minute. 

(d) 

When approach has been missed. (Re-

quest clearance for specific action; i.e., to alternative 
airport, another approach, etc.) 

(e) 

Change in the average true airspeed (at 

cruising altitude) when it varies by 5 percent or 
10 knots (whichever is greater) from that filed in the 
flight plan. 

(f) 

The time and altitude or flight level upon 

reaching a holding fix or point to which cleared. 

(g) 

When leaving any assigned holding fix or 

point. 

NOTE

 

The reports in subparagraphs (f) and (g) may be omitted by 
pilots of aircraft involved in instrument training at military 
terminal area facilities when radar service is being 
provided. 

(h) 

Any loss, in controlled airspace, of VOR, 

TACAN, ADF, low frequency navigation receiver 
capability, GPS anomalies while using installed 
IFR

certified GPS/GNSS receivers, complete or 

partial loss of ILS receiver capability or impairment 
of air/ground communications capability. Reports 
should include aircraft identification, equipment 
affected, degree to which the capability to operate 
under IFR in the ATC system is impaired, and the 
nature and extent of assistance desired from ATC. 

NOTE

 

1. 

Other equipment installed in an aircraft may effectively 

impair safety and/or the ability to operate under IFR. If 
such equipment (e.g., airborne weather radar) malfunc-
tions and in the pilot’s judgment either safety or IFR 
capabilities are affected, reports should be made as above. 

2. 

When reporting GPS anomalies, include the location 

and altitude of the anomaly. Be specific when describing 
the location and include duration of the anomaly if 
necessary. 

(i) 

Any information relating to the safety of 

flight. 

2.  When not in radar contact. 

(a) 

When leaving final approach fix inbound 

on final approach (nonprecision approach) or when 

En Route Procedures 

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