Tower controller described a confused luaw clearance; the pilot misunderstood and required another i...

Narrative:

I was working local control 1 and 2 and instructed a C172 to luaw. The pilot read back 'fly runway heading'. I corrected the pilot immediately and instructed him to hold short of the runway which was read back correctly. Recommendation; revert luaw phraseology to tiph. I've had many pilots (both when I'm working and monitoring local control) read back luaw phraseology as a takeoff clearance. When luaw was first implemented; my facility was briefed that the reason for the change was because three foreign air carrier pilots misinterpreted the tiph phraseology. I've had more than three domestic pilots misinterpret luaw this quarter alone. And that's just me personally! If any of these weren't caught; the results would have been catastrophic and the world would have heard about them. When using tiph phraseology; the only incorrect read back I've ever received was 'hold short' which does not pose a safety concern. This needs to be changed.

Original NASA ASRS Text

Title: Tower Controller described a confused LUAW clearance; the pilot misunderstood and required another instruction from ATC; the reporter suggesting a return to the old phraseology of 'taxi into position and hold' as less confusing.

Narrative: I was working Local Control 1 and 2 and instructed a C172 to LUAW. The pilot read back 'fly runway heading'. I corrected the pilot immediately and instructed him to hold short of the runway which was read back correctly. Recommendation; revert LUAW phraseology to TIPH. I've had many pilots (both when I'm working and monitoring Local Control) read back LUAW phraseology as a takeoff clearance. When LUAW was first implemented; my facility was briefed that the reason for the change was because three foreign air carrier pilots misinterpreted the TIPH phraseology. I've had more than three domestic pilots misinterpret LUAW this quarter alone. And that's just me personally! If any of these weren't caught; the results would have been catastrophic and the world would have heard about them. When using TIPH phraseology; the only incorrect read back I've ever received was 'hold short' which does not pose a safety concern. This needs to be changed.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	960323
Time
Date	201107
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Tower
State Reference	US
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Flight Phase	Taxi
Flight Plan	VFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance

Tower controller described a confused luaw clearance; the pilot misunderstood and required another instruction from ATC; the reporter suggesting a return to the old phraseology of 'taxi into position and hold' as less confusing.