Military X has less than standard separation from military Y. System error.

Attributes
ACN	204465
Time
Date	199203
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ric
State Reference	VA
Altitude	msl bound lower : 13500 msl bound upper : 13500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pit
Operator	other
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Route In Use	enroute : direct enroute airway : zdc
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 20 controller supervisory : 5
ASRS Report	204465
Person 2
Affiliation	government : military
Function	flight crew : single pilot
Qualification	pilot : military
Events
Anomaly	altitude deviation : crossing restriction not met conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation
Independent Detector	other other : unspecified atc
Resolutory Action	none taken : detected after the fact
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 300
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Inter Facility Coordination Failure Intra Facility Coordination Failure

Narrative:

Military X was northbound at 130. Military Y was descended to cross 15 south of ric at 150. Restriction was amended to cross 12 south of ric but altitude not restated. Pilot read back 'roger, one two thousand.' I missed the readback. Traffic was busy with last min point outs in another sector on aircraft that would be traffic for military Y if he didn't descend promptly. Recent procedural changes on the handling of propeller/turbo propeller traffic arriving into the washington metroplex airports has caused the compression of a lot of traffic in the altitudes below 150 ric to fak vortacs, and increased coordination for controllers, both inter and intra facility.

Original NASA ASRS Text

Title: MIL X HAS LTSS FROM MIL Y. SYS ERROR.

Narrative: MIL X WAS NBOUND AT 130. MIL Y WAS DSNDED TO CROSS 15 S OF RIC AT 150. RESTRICTION WAS AMENDED TO CROSS 12 S OF RIC BUT ALT NOT RESTATED. PLT READ BACK 'ROGER, ONE TWO THOUSAND.' I MISSED THE READBACK. TFC WAS BUSY WITH LAST MIN POINT OUTS IN ANOTHER SECTOR ON ACFT THAT WOULD BE TFC FOR MIL Y IF HE DIDN'T DSND PROMPTLY. RECENT PROCEDURAL CHANGES ON THE HANDLING OF PROP/TURBO PROP TFC ARRIVING INTO THE WASHINGTON METROPLEX ARPTS HAS CAUSED THE COMPRESSION OF A LOT OF TFC IN THE ALTS BELOW 150 RIC TO FAK VORTACS, AND INCREASED COORD FOR CTLRS, BOTH INTER AND INTRA FACILITY.

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.