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TitleRadio Telephony Guide Book
TagsTechnology Aerospace Engineering Aviation
File Size2.5 MB
Total Pages275
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Page 137

GA 221, RVR RWY 35, 650
METRES, 700 METRES

AND 600 METRES
ROGER, GA 221

VTABC, RVR RWY 27, 700
METRES, NOT

AVAILABLE, 600 METRES
ROGER, VTABC

10.3 Runway Surface Conditions
Runway surface conditions are measured and reported as per procedures given in ICAO

Annex 14.

10.3.1 When it is evident that the reports from pilots are useful to other aircraft, such information
may be retransmitted by a controller (Also see Part II Chapter 11, paragraph 11.6):

“BRAKING ACTION REPORTED BY A320 (aircraft type) AT 0927 (time) UNRELIABLE
(assessment of braking action)

10.3.2 If a controller considers it necessary, information about water presence on a runway shall be
passed to aircraft using the terms ‘DAMP’ (the surface shows a change of colour due to moisture),
‘WET’ (surface is soaked but there is no standing water), ‘WATER PATCHES’ (significant patches
of standing water are visible), or ‘FLOODED’ (extensive standing water is visible) according to the
amount of water present.

10.3.3 Other runway conditions and activities which may be of concern to a pilot should be
transmitted at an appropriate time.

VTABC COCHIN TWR,
GRASS MOWING IN

PROGRESS NEAR
CENTRE OF

AERODROME

COCHIN TWR VTABC,
MOWERS IN SIGHT

- - - - - - - - - - - -

AI505, THRESHOLD RWY
27 DISPLACED 500 FT DUE

BROKEN SURFACE
ROGER, AI505

- - - - - - - - - - - - -

IC345, TAXIWAY GOLF
CLOSED DUE

MAINTENANCE, USE
ALPHA TO VACATE

VACATING VIA ALPHA, IC345

- - - - - - - - - - - - - -

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Page 138

CHAPTER 11

MISCELLANEOUS FLIGHT HANDLING PHRASEOLOGY

11.1 Fuel Dumping
A pilot may, during emergency or urgency conditions, may dump fuel to reduce the

maximum landing mass in order to execute a safe landing. During such a situation, the pilot should
inform the ATS unit about his intentions. The ATS unit should coordinate with the pilot about the
route to be flown, the flight level to be used and the duration of the fuel dumping. Controlled traffic
in the vicinity will be separated and for the non-controlled traffic, a warning will be broadcast.

ALL STATIONS MUMBAI CONTROL,
B777 DUMPING FUEL, FL100,

BEGINNING 10 MILES WEST OF BISET
ON A451 FOR 50 MILES, AVOID FLIGHT
BTN FL70 AND FL110 WITHIN 50 MILES

BEHIND, 10 MILES AHEAD OF THE
AIRCRAFT AND WITHIN 10 NM TO THE

SIDES OF FUEL DUMPING TRACK

ALL STATIONS MUMBAI CONTROL,
FUEL DUMPING COMPLETED


11.2 Wake Turbulence

If the controller suspects or is aware of any wake turbulence, he/she should warn aircraft as
appropriate. (See Part II Chapter 2 paragraph 2.7.2.4 for categories of aircraft).

VBC, EXTEND
DOWNWIND DUE WAKE

TURBULENCE, B747
LANDING AHEAD

EXTENDING DOWNWIND,
VBC

- - - - - - - - - - - -

VME, HOLD POSITION
DUE WAKE

TURBULENCE, AIRBUS
DEPARTING AHEAD

HOLDING, VME

11.3 Wind Shear and Micro Burst

11.3.1 Wind shear is a sustained change in wind velocity along the aircraft flight path. Wind shears
occurring from the ground surface to a height of 1500 ft (approx) are called ‘low level wind shears’.
Low level wind shears are quite dangerous which can affect the control of aircraft in departure or
final approach phases of flight. Aircraft will report the wind shear information in the following
order:

(a) Aircraft call sign

(b) Wind shear report

(c) Time of wind shear occurrence

124

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