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.  operation for at least five minutes at the
takeoff-power setting, followed by opera-
tion for at least 10 minutes at 75 percent maximum continuous power (MCP), at 50 percent MCP and at the flight-idle setting in
a glaze-icing condition (a liquid water con-
tent [lWC] of at least two grams per cubic meter, an inlet temperature of 23 degrees
Fahrenheit [F] and a mean effective water
droplet diameter of 22 microns);
.  operation for at least five minutes at the
takeoff-power setting, followed by opera-
tion for at least 10 minutes at 75 percent MCP, at 50 percent MCP and at the flight-
idle setting in a rime-icing condition (an
lWC of at least one gram per cubic meter, an inlet temperature of –4 degrees F and
a mean effective water droplet diameter of 15 microns); and,
.  engine operation at the ground-idle set-ting for at least 30 minutes, followed by
acceleration to the takeoff-power setting
in a ground-fog-icing condition (an lWC of at least 0.3 gram per cubic meter, an inlet temperature of 15 degrees F to 30
degrees F and a mean effective water
droplet diameter of 20 microns).
FAA includes recommended test conditions for
prolonged engine operation (at least 45 minutes)
in rime icing and mixed (rime and glaze) icing. The mixed-icing condition must be alternated
between an lWC of 0.3 gram per cubic meter and
a mean effective droplet diameter of 15 microns
to 20 microns, and an lWC of 1.7 grams per cubic
meter and a mean effective droplet diameter of
20 microns; with inlet temperatures of 14 degrees F for turbofan engines and 6 degrees F for turbo-prop engines.
the aC says that during the tests, ice should
not accumulate to an extent that it adversely affects engine operation, no sustained power loss should occur and, except for specific circum-stances, no engine damage should occur.

 

Aircraft Collide in Gate Area
The flight crew of one of the Airbus A320s said that ground personnel had motioned to them to indicate the wing tip clearance distance. One ground crewmember, however,
said that he had given the crew “the hold sign.”
— FSF EdIToRIAL STAFF
T
he following information provides an awareness of problems through which such occurrences may be prevented in the future. Accident/incident briefs are based on preliminary information from gov-ernment agencies, aviation organizations, press information and other sources. This information may not be entirely accurate.
Captain Cited Communications Problems
Airbus A320. Minor damage. No injuries.
— Airbus A320. Minor damage. No injuries.
N
ight visual meteorological conditions pre-
vailed as the two airplanes were being
prepared to leave the gate area at an airport in
the United States.
　
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