Section 2. Overdue Aircraft Action
a. As soon as a VFR/DVFR aircraft (military or
civil) becomes overdue, the destination tiein
facility/sector (including intermediate destination
tiein facilities for military aircraft) must initiate a
communications search to locate the aircraft by
checking the following:
1. Destination airport
2. Flight plan phone number, if available
3. BASOPS, if applicable
4. Customs, if applicable
5. ATC facilities as applicable
6. DUAT vendor, if applicable
b. If the aircraft has not been located, check the
1. Departure airport
2. All airports adjacent to the destination that
could accommodate the aircraft
3. Appropriate ARTCC sectors
a. If the communications search does not locate
the aircraft, and the flight plan is not held by the
destination station, transmit a QALQ to the
facility/sector that holds the flight plan.
Possible Flight Plan Originators:
KxxxYFYX Flight Service
KxxxYXYX Military BASOPS
KIADXCLX or KMIVXDTC DUAT Vendors
QALQ is used to solicit information that is not accessible.
If the flight plan information is already available to the
destination tiein facility/sector, QALQ is not required."
b. The QALQ message text must begin with the
contraction “QALQ” followed by the aircraft
c. If the specialist determines that the
communications search cannot be completed prior to
the INREQ transmission time, the QALQ must be
transmitted in time to receive the information for the
INREQ message. The communications search must
continue without reference to time until such a time
that the aircraft is located, the communications search
is complete, or the search is suspended.
d. In the case of a U.S.registered aircraft, or any
aircraft known to be piloted by or transporting U.S.
citizens and en route within a foreign country or
between two foreign countries, if an overdue report
is received either from someone directly concerned or
from aviation authorities of a foreign country, notify
the Washington Communications Control Center
immediately via Service B message addressed to
e. Automated systems will accept properly
formatted QALQs, INREQs, ALNOTs, INCERFAs,
ALERFAs, and DETRESFAs and place them on the
SAR list. A SAR alert may be generated at designated
workstations. SAR messages must be deleted from
the SAR list when the SAR is cancelled.
8-2-3. ACTION BY DEPARTURE STATION
ON RECEIPT OF QALQ
Upon receipt of the QALQ message, the departure
tiein facility must check for any information about
the aircraft, and take the following actions:
a. If the aircraft is located, notify the destination
facility. This may be delivered via Service B message
or recorded communications.
b. If unable to obtain additional information,
transmit a message to the destination tiein facility
containing all information not previously sent.
Include any verbal or written remarks which could be
pertinent to the search.
For operational systems using a common data base, the
departure and destination station may be considered the
[flight plan information]
[additional pertinent information]
8-2-4. CANCELLATION OF THE QALQ
If the aircraft is located by the destination facility
after the QALQ is sent, transmit a cancellation
message addressed to all recipients of the QALQ.
QALQ N4367V CNLD