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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Controller forgot cpr X, descended aircraft to wrong altitude unauthorized uncoord penetration of adjacent sector airspace. Cpr X had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 238250 |
| Time | |
| Date | 199304 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : aml |
| State Reference | VA |
| Altitude | msl bound lower : 9000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 8 |
| ASRS Report | 238250 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure Operational Error |
Narrative:
ZDC blue ridge sector coordinated cpr X overflt to dca to be handed off at 13000 ft. I approved. Center switched aircraft to nh frequency who then switched cpr X to me. I then performed a late pointout. The nh controller was busy at the time and I was having beacon/mode C problems which diverted my attention. I cleared cpr X to go on initial contact and forgot about him. The aircraft ended up in nh's airspace 10 mi west of aml about 1 mi from air carrier Y, descending from 11000 ft to 8000 ft. Cpr X should have been at 7000 ft. Visual separation was applied by nh controller between air carrier Y and cpr X but I doubt we had appropriate IFR separation before visual separation was applied. The reason for beacon/mode C problems was that af had ARTS III in level 1 and we were losing critical data.
Original NASA ASRS Text
Title: CTLR FORGOT CPR X, DSNDED ACFT TO WRONG ALT UNAUTH UNCOORD PENETRATION OF ADJACENT SECTOR AIRSPACE. CPR X HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: ZDC BLUE RIDGE SECTOR COORDINATED CPR X OVERFLT TO DCA TO BE HANDED OFF AT 13000 FT. I APPROVED. CTR SWITCHED ACFT TO NH FREQ WHO THEN SWITCHED CPR X TO ME. I THEN PERFORMED A LATE POINTOUT. THE NH CTLR WAS BUSY AT THE TIME AND I WAS HAVING BEACON/MODE C PROBS WHICH DIVERTED MY ATTN. I CLRED CPR X TO GO ON INITIAL CONTACT AND FORGOT ABOUT HIM. THE ACFT ENDED UP IN NH'S AIRSPACE 10 MI W OF AML ABOUT 1 MI FROM ACR Y, DSNDING FROM 11000 FT TO 8000 FT. CPR X SHOULD HAVE BEEN AT 7000 FT. VISUAL SEPARATION WAS APPLIED BY NH CTLR BTWN ACR Y AND CPR X BUT I DOUBT WE HAD APPROPRIATE IFR SEPARATION BEFORE VISUAL SEPARATION WAS APPLIED. THE REASON FOR BEACON/MODE C PROBS WAS THAT AF HAD ARTS III IN LEVEL 1 AND WE WERE LOSING CRITICAL DATA.
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.