c. Aircraft taxiing behind jet aircraft in freezing conditions may experience aggravated engine and
airframe icing. For planning purposes, be alert to pilot advisories that increase taxi intervals.
4. HOLD TAXIING AIRCRAFT CLEAR OF RUNWAYS (RUNWAY PROXIMITY) AND
You should hold a taxiing aircraft clear of runways at established holding points marked by taxiway
hold lines or signs. If no hold lines or signs are established, instruct the pilot to hold the aircraft short of
a specific runway (Figure 1-3). You then should issue traffic information as necessary.
EXAMPLE: "Runway three-six, taxi via taxiway Echo. Hold short of runway two-seven."
Figure 1-3. Phraseology for holding instructions and expeditious taxi