ZDC data controller effects coordination to xferring ZID controller to amend descending altitude of air carrier inbound on a STAR. On initial contact the data controller hears the air carrier check in with the ZDC controller with conflicting restrs. The data controller alerts the radar controller, who is giving training. The air carrier jet comes into conflict with other traffic, descending through coordination altitude.

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Attributes
ACN	425708
Time
Date	199901
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : crw
State Reference	WV
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mwh
Operator	common carrier : air carrier
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : flight data
ASRS Report	425708
Person 2
Affiliation	government : faa
Function	other personnel other
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated
Miss Distance	horizontal : 23400 vertical : 1500
Supplementary
Air Traffic Incident	Inter Facility Coordination Failure Intra Facility Coordination Failure Operational Error

Narrative:

Aircraft #1 was in handoff status from ZID. Data block showed FL370 down to FL330. Aircraft #2 northbound on J53 was at FL330 and other traffic at FL370 were a potential conflict. I was working the L37 sector (handoff position) and instructed the D37 position to have ZID stop aircraft #1 at FL350. Note: aircraft #1 in a descent and handoff. Iad was required to enter our airspace at FL330. During this time period, D37 requested the aircraft at FL350 and ZID said 'show it.' aircraft #1 came over and stated descending to FL350 with a clearance to cross 60 NM east of hvq at FL330. I stated to the radar controller that I heard FL330. I restated this and the developmental (trainee) said aircraft calling say again. I was off the frequencys and didn't hear the second readback. The radar controller and developmental assured me the aircraft was descending to FL350. The aircraft appeared to level off at FL350. Traffic was later called and acknowledged by aircraft #1. This aircraft did not question his clearance to FL330. Aircraft #1 also violated the 60 mi restr. ZID failed to give the required restr and/or altitude. (60 mi violates crossing the boundary at FL330). Failure twice to hear readback by respective parties. Readback was ambiguous.

Original NASA ASRS Text

Title: ZDC DATA CTLR EFFECTS COORD TO XFERRING ZID CTLR TO AMEND DSNDING ALT OF ACR INBOUND ON A STAR. ON INITIAL CONTACT THE DATA CTLR HEARS THE ACR CHK IN WITH THE ZDC CTLR WITH CONFLICTING RESTRS. THE DATA CTLR ALERTS THE RADAR CTLR, WHO IS GIVING TRAINING. THE ACR JET COMES INTO CONFLICT WITH OTHER TFC, DSNDING THROUGH COORD ALT.

Narrative: ACFT #1 WAS IN HDOF STATUS FROM ZID. DATA BLOCK SHOWED FL370 DOWN TO FL330. ACFT #2 NBOUND ON J53 WAS AT FL330 AND OTHER TFC AT FL370 WERE A POTENTIAL CONFLICT. I WAS WORKING THE L37 SECTOR (HDOF POS) AND INSTRUCTED THE D37 POS TO HAVE ZID STOP ACFT #1 AT FL350. NOTE: ACFT #1 IN A DSCNT AND HDOF. IAD WAS REQUIRED TO ENTER OUR AIRSPACE AT FL330. DURING THIS TIME PERIOD, D37 REQUESTED THE ACFT AT FL350 AND ZID SAID 'SHOW IT.' ACFT #1 CAME OVER AND STATED DSNDING TO FL350 WITH A CLRNC TO CROSS 60 NM E OF HVQ AT FL330. I STATED TO THE RADAR CTLR THAT I HEARD FL330. I RESTATED THIS AND THE DEVELOPMENTAL (TRAINEE) SAID ACFT CALLING SAY AGAIN. I WAS OFF THE FREQS AND DIDN'T HEAR THE SECOND READBACK. THE RADAR CTLR AND DEVELOPMENTAL ASSURED ME THE ACFT WAS DSNDING TO FL350. THE ACFT APPEARED TO LEVEL OFF AT FL350. TFC WAS LATER CALLED AND ACKNOWLEDGED BY ACFT #1. THIS ACFT DID NOT QUESTION HIS CLRNC TO FL330. ACFT #1 ALSO VIOLATED THE 60 MI RESTR. ZID FAILED TO GIVE THE REQUIRED RESTR AND/OR ALT. (60 MI VIOLATES XING THE BOUNDARY AT FL330). FAILURE TWICE TO HEAR READBACK BY RESPECTIVE PARTIES. READBACK WAS AMBIGUOUS.

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.