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Captain of a cargo B727 stayed 300 ft above assigned altitude during final to avoid possible wake turbulence from a DC10 which he was following on final. ATC did not comment and subsequently cleared him for a visual approach.
| Attributes | |
| ACN | 423074 |
| Time | |
| Date | 199812 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ewr |
| State Reference | NJ |
| Altitude | msl bound lower : 3000 msl bound upper : 3300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Route In Use | arrival star : star enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 45 flight time total : 6500 flight time type : 1000 |
| ASRS Report | 423074 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 60 flight time total : 3400 flight time type : 700 |
| ASRS Report | 423071 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
We were given last min vector across localizer for traffic separation behind a heavy DC10. With all the zig-zagging we were doing, the captain was trying to stay a little above the path of the dc-10. I had said watch your altitude and tapped on the controls twice and after the third time the captain replied he was staying above the DC10's path that appeared very close to ours. No comments were made from approach but we were very close to 300 ft off our altitude. We were then cleared for the visual behind the DC10 and landed without any occurrences.
Original NASA ASRS Text
Title: CAPT OF A CARGO B727 STAYED 300 FT ABOVE ASSIGNED ALT DURING FINAL TO AVOID POSSIBLE WAKE TURB FROM A DC10 WHICH HE WAS FOLLOWING ON FINAL. ATC DID NOT COMMENT AND SUBSEQUENTLY CLRED HIM FOR A VISUAL APCH.
Narrative: WE WERE GIVEN LAST MIN VECTOR ACROSS LOC FOR TFC SEPARATION BEHIND A HVY DC10. WITH ALL THE ZIG-ZAGGING WE WERE DOING, THE CAPT WAS TRYING TO STAY A LITTLE ABOVE THE PATH OF THE DC-10. I HAD SAID WATCH YOUR ALT AND TAPPED ON THE CTLS TWICE AND AFTER THE THIRD TIME THE CAPT REPLIED HE WAS STAYING ABOVE THE DC10'S PATH THAT APPEARED VERY CLOSE TO OURS. NO COMMENTS WERE MADE FROM APCH BUT WE WERE VERY CLOSE TO 300 FT OFF OUR ALT. WE WERE THEN CLRED FOR THE VISUAL BEHIND THE DC10 AND LANDED WITHOUT ANY OCCURRENCES.
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.