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Cabin attendant controller at pne was using d-brite radar to see traffic operating in the local area. The controller approved a pointout from phl approach control on a military aircraft inbound to a military base about 6 mi from pne. Shortly thereafter the data block on the military aircraft dropped. An H25CR departing pne was not issued traffic and the military pilot called and said the traffic had passed at a very close distance.
| Attributes | |
| ACN | 409943 |
| Time | |
| Date | 199807 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pne |
| State Reference | PA |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : pne |
| Operator | general aviation : corporate |
| Make Model Name | HS 125 Series 1-600 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Military |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller non radar : 7 |
| ASRS Report | 409943 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
Aircraft X, a H25C/right, departed pne runway 33 on runway heading on an IFR flight plan. A military, aircraft Y, was descending into willow grove airport. The data block dropped prematurely on the military aircraft, the targets merged, says the military aircraft. I never observed it on the d-brite. The d-brite malfunctions have been reported numerous times to both FAA maintenance and willow grove maintenance. The d-brite needs to be fixed. Callback conversation with reporter revealed the following information: reporter said that the d-brite information is coming from the radar at the military base 6 mi from pne and malfunctions often. Controller admitted forgetting to issue traffic and had not noticed that the data block on the military aircraft had dropped until after the H25 aircraft had departed.
Original NASA ASRS Text
Title: CAB CTLR AT PNE WAS USING D-BRITE RADAR TO SEE TFC OPERATING IN THE LCL AREA. THE CTLR APPROVED A POINTOUT FROM PHL APCH CTL ON A MIL ACFT INBOUND TO A MIL BASE ABOUT 6 MI FROM PNE. SHORTLY THEREAFTER THE DATA BLOCK ON THE MIL ACFT DROPPED. AN H25CR DEPARTING PNE WAS NOT ISSUED TFC AND THE MIL PLT CALLED AND SAID THE TFC HAD PASSED AT A VERY CLOSE DISTANCE.
Narrative: ACFT X, A H25C/R, DEPARTED PNE RWY 33 ON RWY HEADING ON AN IFR FLT PLAN. A MIL, ACFT Y, WAS DSNDING INTO WILLOW GROVE ARPT. THE DATA BLOCK DROPPED PREMATURELY ON THE MIL ACFT, THE TARGETS MERGED, SAYS THE MIL ACFT. I NEVER OBSERVED IT ON THE D-BRITE. THE D-BRITE MALFUNCTIONS HAVE BEEN RPTED NUMEROUS TIMES TO BOTH FAA MAINT AND WILLOW GROVE MAINT. THE D-BRITE NEEDS TO BE FIXED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR SAID THAT THE D-BRITE INFO IS COMING FROM THE RADAR AT THE MIL BASE 6 MI FROM PNE AND MALFUNCTIONS OFTEN. CTLR ADMITTED FORGETTING TO ISSUE TFC AND HAD NOT NOTICED THAT THE DATA BLOCK ON THE MIL ACFT HAD DROPPED UNTIL AFTER THE H25 ACFT HAD DEPARTED.
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.