initial heading


Also found in: Acronyms.

initial heading

[i′nish·əl ′hed·iŋ]
(navigation)
The aircraft heading at the beginning of a rating period while using gyro steering.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

initial heading

i. The aircraft heading at the start of a gyro rating period when using astro-gyro control. See final heading.
ii. In air interception, it is the heading given to the air defense aircraft at the moment of scramble or immediately after takeoff (e.g., “Mission 51, scramble, scramble, scramble, initial heading 072 degrees, climb to flight level 200 and contact Braveheart control on channel 12”).
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Takeda, Watanabe, Takahashi, and Tauchi (2006) investigated the ability of participants who were blind to walk in a straight line for approximately 30 feet when they used a standardized Japanese guiding surface of bar tiles to establish their initial heading. The participants deviated from the intended heading the least when the bars were oriented perpendicular to the intended direction of travel.
(2007) found that bar tiles that are arranged in this way promote a more ac curate initial heading than do bar tiles that are arranged parallel to the intended direction of travel.
The two recorded locations for a given test surface and trial allowed us to calculate the participant's initial heading.
My likely initial heading would mean that HANCE intersection, both an initial approach fix (IAF) and the final approach fix (FAF) would not be far away.
Some pilots advocate setting the heading bug, and therefore the flight director command bars, to the initial heading or route.
If you're not sure what heading to turn to without the GPS, ask your controller for an initial heading.
"Although legal restrictions prevent the ATSB from providing specific details about each of the 10 simulations (referred to as Cases 1-10), the ATSB did reveal that the initial speeds varied between M0.75 (894km/hr) and M0.83, the starting altitudes were either FL350 (35,000 feet) or FL400, the initial headings were either 178 degrees, 184 degrees or 190 degrees, and turbulence was either light or moderate.
Full browser ?