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Operational error -- loss intrail separation behind a heavy jet. Reporter indicates this is a recurring problem.
| Attributes | |
| ACN | 280006 |
| Time | |
| Date | 199408 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ewr |
| State Reference | NJ |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 tower : ewr tower : sfo |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| ASRS Report | 280006 |
| 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 |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 6000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Once again N90 gives 4 mi behind a heavy jet. This happens each day at ewr! Many times N90 gives 5 mi behind a heavy but as soon as the heavy hits the OM he slows to approach speed and we lose IFR separation. We need 6 mi behind a heavy so there will be separation.
Original NASA ASRS Text
Title: OPERROR -- LOSS INTRAIL SEPARATION BEHIND A HVY JET. RPTR INDICATES THIS IS A RECURRING PROB.
Narrative: ONCE AGAIN N90 GIVES 4 MI BEHIND A HVY JET. THIS HAPPENS EACH DAY AT EWR! MANY TIMES N90 GIVES 5 MI BEHIND A HVY BUT AS SOON AS THE HVY HITS THE OM HE SLOWS TO APCH SPD AND WE LOSE IFR SEPARATION. WE NEED 6 MI BEHIND A HVY SO THERE WILL BE SEPARATION.
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.