AIM

4/3/14

4−3−24

Airport Operations

g.

When entering the departure runway for takeoff

or to “line up and wait,” all lights, except for landing

lights, should be illuminated to make the aircraft

conspicuous to ATC and other aircraft on approach.

Landing lights should be turned on when takeoff

clearance is received or when commencing takeoff

roll at an airport without an operating control tower.

4

−

3

−

24. Flight Inspection/‘Flight Check’

Aircraft in Terminal Areas

a. Flight check

 is a call sign used to alert pilots and

air traffic controllers when a FAA aircraft is engaged

in flight inspection/certification of NAVAIDs and

flight procedures. Flight check aircraft fly preplanned

high/low altitude flight patterns such as grids, orbits,

DME arcs, and tracks, including low passes along the

full length of the runway to verify NAVAID

performance.

b.

Pilots should be especially watchful and avoid

the flight paths of any aircraft using the call sign

“Flight Check.” These flights will normally receive

special handling from ATC. Pilot patience and

cooperation in allowing uninterrupted recordings can

significantly help expedite flight inspections, mini-

mize costly, repetitive runs, and reduce the burden on

the U.S. taxpayer.

4

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3

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25. Hand Signals

FIG 4

−3−9

Signalman Directs Towing

SIGNALMAN

SIGNALMAN