Federal Aviation Administration regulations (excerpt)
Federal Aviation Administration website


Consider that an aircraft emergency exists and inform the RCC or ARTCC and alert the appropriate DF facility when:

1. USAF facilities are only required to notify the ARTCC.

2. The requirement to alert DF facilities may be deleted if radar contact will be maintained throughout the duration of the emergency.

a. An emergency is declared by either:

1. The pilot.

2. Facility personnel.

3. Officials responsible for the operation of the aircraft.

b. There is unexpected loss of radar contact and radio communications with any IFR or VFR aircraft.

c. Reports indicate it has made a forced landing, is about to do so, or its operating efficiency is so impaired that a forced landing will be necessary.

d. Reports indicate the crew has abandoned the aircraft or is about to do so.

e. An emergency radar beacon response is received.

EN ROUTE. During Stage A operation, Code 7700 causes EMRG to blink in field E of the data block.

f. Intercept or escort aircraft services are required.

g. The need for ground rescue appears likely.

h. An Emergency Locator Transmitter (ELT) signal is heard or reported.

FAAO 7110.65, Providing Assistance, Para 10-1-3.
FAAO 7110.65, Emergency Locator Transmitter (ELT) Signals, Para 10-2-10.


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