ATP rated pilot becomes confused with ILS approach clearance and procedures at rdm airport.

Attributes
ACN	433094
Time
Date	199904
Day	Mon
Local Time Of Day	1201 To 1800
Place
State Reference	WA
Altitude	msl single value : 7700
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse.artcc
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Navigation In Use	ils localizer & glide slope : 22 other ndb
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 30 flight time total : 4000 flight time type : 110
ASRS Report	433094
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Controller issued direct to marker beacon. On a DME arc approach it is confusing if the controller does not mention continuing the arc to intercept the approach. Pilots do not know if the clearance is direct or should they continue the arc to intercept the approach. Controllers need to be specific on complex approachs.

Original NASA ASRS Text

Title: ATP RATED PLT BECOMES CONFUSED WITH ILS APCH CLRNC AND PROCS AT RDM ARPT.

Narrative: CTLR ISSUED DIRECT TO MARKER BEACON. ON A DME ARC APCH IT IS CONFUSING IF THE CTLR DOES NOT MENTION CONTINUING THE ARC TO INTERCEPT THE APCH. PLTS DO NOT KNOW IF THE CLRNC IS DIRECT OR SHOULD THEY CONTINUE THE ARC TO INTERCEPT THE APCH. CTLRS NEED TO BE SPECIFIC ON COMPLEX APCHS.

Data retrieved from NASA's ASRS site as of July 2007 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.