Narrative:

Misapplication of 4TH line 'present heading'zid indianapolis center sectors abutting the southeast area of ZAU chicago center have controllers who routinely misapply 'ph'[present heading] in the 4th line.today at ZAU sector 36 fwa/fort wayne I observed two instances:1.) aircraft X climbing FL187 to FL220 and turned right of course (from direct fwa) but the data block read 'ph;' which is incorrect. This aircraft was in ZID sector 32/33 mie/rod muncie/Rosewood2.) aircraft Y at FL240 and turned left of course from fwa. But data block read 'ph' incorrectly. ZID sector 88 day daytonremedial training for ZID controllers. Headings are more meaningful-and legal-when they are 10R; 15L; 320; etc. Ph is only for when an aircraft is to fly a heading beyond a fix where they would otherwise turn.

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Original NASA ASRS Text

Title: Chicago Center Controller reported that Indianapolis Center controllers are not using the letters PH (Present Heading) correctly when entering the information in the fourth data block.

Narrative: MISAPPLICATION OF 4TH LINE 'PRESENT HEADING'ZID Indianapolis Center sectors abutting the southeast area of ZAU Chicago Center have controllers who routinely misapply 'PH'[Present Heading] in the 4th line.Today at ZAU sector 36 FWA/Fort Wayne I observed two instances:1.) Aircraft X climbing FL187 to FL220 and turned right of course (from direct FWA) but the data block read 'PH;' which is incorrect. This aircraft was in ZID sector 32/33 MIE/ROD Muncie/Rosewood2.) Aircraft Y at FL240 and turned left of course from FWA. But data block read 'PH' incorrectly. ZID sector 88 DAY DaytonRemedial training for ZID controllers. Headings are more meaningful-and legal-when they are 10R; 15L; 320; etc. PH is only for when an aircraft is to fly a heading beyond a fix where they would otherwise turn.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.