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Air carrier medium large transport track deviation during visual approach to multiple parallel runways results in less than standard separation with second air carrier.
| Attributes | |
| ACN | 179487 |
| Time | |
| Date | 199105 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : smf |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mcc |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other descent other other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent other landing other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 15000 flight time type : 7000 |
| ASRS Report | 179487 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : required legal separation other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 1500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During descent on a left downwind leg for a visibility landing at smf runway 34L, we were high and overshooting centerline for runway 34L. An air carrier Y medium large transport Y was on approach to runway 34R. The controller noted what was happening and asked us to roll out and level off to go over the medium large transport Y, and then do a 270 degree turn for a normal landing to 34L. Thanks to a sharp controller, he prevented what could have been a bad situation.
Original NASA ASRS Text
Title: ACR MLG TRACK DEVIATION DURING VISUAL APCH TO MULTIPLE PARALLEL RWYS RESULTS IN LESS THAN STANDARD SEPARATION WITH SECOND ACR.
Narrative: DURING DSNT ON A LEFT DOWNWIND LEG FOR A VIS LNDG AT SMF RWY 34L, WE WERE HIGH AND OVERSHOOTING CENTERLINE FOR RWY 34L. AN ACR Y MLG Y WAS ON APCH TO RWY 34R. THE CTLR NOTED WHAT WAS HAPPENING AND ASKED US TO ROLL OUT AND LEVEL OFF TO GO OVER THE MLG Y, AND THEN DO A 270 DEG TURN FOR A NORMAL LNDG TO 34L. THANKS TO A SHARP CTLR, HE PREVENTED WHAT COULD HAVE BEEN A BAD SITUATION.
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.