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Abi controller reports possible loss of separation when facility was utilizing cenrap equipment and procedures during terminal radar outage.
| Attributes | |
| ACN | 678475 |
| Time | |
| Date | 200511 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dys.airport |
| State Reference | TX |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : abi.tracon |
| Operator | other |
| Make Model Name | Talon |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Aircraft 2 | |
| Controlling Facilities | tracon : abi.tracon |
| Operator | other |
| Make Model Name | B1 Lancer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 15 controller time certified in position1 : 8 |
| ASRS Report | 678475 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : cenrap other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Navigational Facility FAA ATC Human Performance |
| Primary Problem | Navigational Facility |
Narrative:
Busy traffic; multiple approachs at dys AFB; including BE40; B1; T38 aircraft. Abilene approach was utilizing 'cenrap' and 'cenrap' procedures; requiring 5 mi lateral separation. Due to irregularities with cenrap; there was a possible loss of lateral separation due to the compression factor on final approach to runway 34 at dys. Abi true radar has been OTS for over 1 week. Technicians appear to be at a loss on how to get abi radar repaired.
Original NASA ASRS Text
Title: ABI CTLR RPTS POSSIBLE LOSS OF SEPARATION WHEN FACILITY WAS UTILIZING CENRAP EQUIP AND PROCS DURING TERMINAL RADAR OUTAGE.
Narrative: BUSY TFC; MULTIPLE APCHS AT DYS AFB; INCLUDING BE40; B1; T38 ACFT. ABILENE APCH WAS UTILIZING 'CENRAP' AND 'CENRAP' PROCS; REQUIRING 5 MI LATERAL SEPARATION. DUE TO IRREGULARITIES WITH CENRAP; THERE WAS A POSSIBLE LOSS OF LATERAL SEPARATION DUE TO THE COMPRESSION FACTOR ON FINAL APCH TO RWY 34 AT DYS. ABI TRUE RADAR HAS BEEN OTS FOR OVER 1 WK. TECHNICIANS APPEAR TO BE AT A LOSS ON HOW TO GET ABI RADAR REPAIRED.
Data retrieved from NASA's ASRS site as of January 2009 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.