Observer reported faulty clearance readback during combined ATC position of operations.

Attributes
ACN	604423
Time
Date	200401
Day	Sat
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : dca.airport
State Reference	DC
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 125
Flight Phase	ground : parked ground : preflight
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : dca.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : preflight
Flight Plan	IFR
Person 1
Function	observation : observer
ASRS Report	604423
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	non adherence other other anomaly other
Independent Detector	other other : 1
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	ATC Human Performance FAA
Primary Problem	Ambiguous

Narrative:

Dca controller was working local, ground, and clearance delivery position. ATIS had just changed. One plane requested 'pushback with ATIS information.' controller approved pushback and advised crew to get the new ATIS information. Crew acknowledged new ATIS. Controller then was handling a clearance delivery request on that frequency. Next plane on ground control requested 'pushback with first ATIS information.' controller did not advise that plane of new ATIS. There were no major ATIS changes, and no real safety problem. Workload at the time was moderate, however, the controller was working 3 position/radio frequencys simultaneously. This illustrates a 'readback/hearback' problem when controllers work multiple position or a position with multiple radio frequencys.

Original NASA ASRS Text

Title: OBSERVER RPTED FAULTY CLRNC READBACK DURING COMBINED ATC POS OF OPS.

Narrative: DCA CTLR WAS WORKING LCL, GND, AND CLRNC DELIVERY POS. ATIS HAD JUST CHANGED. ONE PLANE REQUESTED 'PUSHBACK WITH ATIS INFO.' CTLR APPROVED PUSHBACK AND ADVISED CREW TO GET THE NEW ATIS INFO. CREW ACKNOWLEDGED NEW ATIS. CTLR THEN WAS HANDLING A CLRNC DELIVERY REQUEST ON THAT FREQ. NEXT PLANE ON GND CTL REQUESTED 'PUSHBACK WITH FIRST ATIS INFO.' CTLR DID NOT ADVISE THAT PLANE OF NEW ATIS. THERE WERE NO MAJOR ATIS CHANGES, AND NO REAL SAFETY PROB. WORKLOAD AT THE TIME WAS MODERATE, HOWEVER, THE CTLR WAS WORKING 3 POS/RADIO FREQS SIMULTANEOUSLY. THIS ILLUSTRATES A 'READBACK/HEARBACK' PROB WHEN CTLRS WORK MULTIPLE POS OR A POS WITH MULTIPLE RADIO FREQS.

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.