 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
MD11 flight crew vectored to ILS final approach course was unable to descend to the FAF altitude due to 40 KT tailwind, high localizer intercept altitude and close in vector. Flight crew initiated a go around 1- 2 mi outside FAF, but controller issued immediate descent and vector heading for traffic. Controller actions insufficient to maintain standard separation.
| Attributes | |
| ACN | 393060 |
| Time | |
| Date | 199802 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : oak |
| State Reference | CA |
| Altitude | msl bound lower : 2200 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Route In Use | arrival other arrival star : star enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 100 flight time total : 9500 flight time type : 2200 |
| ASRS Report | 393060 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 4000 flight time type : 525 |
| ASRS Report | 393062 |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance other other |
| Consequence | Other |
| Miss Distance | horizontal : 5000 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Clearance: bsr hadly 2 arrival ILS runway 11 oak. We were expecting vectors from sau. We received early vectors to intercept ILS runway 11 oak with a 40 KT tailwind. We could not descend fast enough to intercept the GS. We were held at 4000 ft until a few mi from the localizer and FAF. The turn on was between alcat and plaza intxns. We started a go around at approximately 1-2 mi from plaza. We were told to make an immediate left to 090 degrees and descend to 1800 ft. ATC called traffic at 11 O'clock. We spotted traffic at approximately 300 ft above and less than 1 mi. Visibility through the windshield was poor due to moderate to heavy rain. The vectors to intercept from the east to re-establish the approach were almost as bad as the first attempt. Traffic was not that heavy in the area. Supplemental information from acn 393062: we started a go around at approximately 1-2 mi from plaza. At this point in time we were between 2200-2500 ft MSL.
Original NASA ASRS Text
Title: MD11 FLC VECTORED TO ILS FINAL APCH COURSE WAS UNABLE TO DSND TO THE FAF ALT DUE TO 40 KT TAILWIND, HIGH LOC INTERCEPT ALT AND CLOSE IN VECTOR. FLC INITIATED A GAR 1- 2 MI OUTSIDE FAF, BUT CTLR ISSUED IMMEDIATE DSCNT AND VECTOR HDG FOR TFC. CTLR ACTIONS INSUFFICIENT TO MAINTAIN STANDARD SEPARATION.
Narrative: CLRNC: BSR HADLY 2 ARR ILS RWY 11 OAK. WE WERE EXPECTING VECTORS FROM SAU. WE RECEIVED EARLY VECTORS TO INTERCEPT ILS RWY 11 OAK WITH A 40 KT TAILWIND. WE COULD NOT DSND FAST ENOUGH TO INTERCEPT THE GS. WE WERE HELD AT 4000 FT UNTIL A FEW MI FROM THE LOC AND FAF. THE TURN ON WAS BTWN ALCAT AND PLAZA INTXNS. WE STARTED A GAR AT APPROX 1-2 MI FROM PLAZA. WE WERE TOLD TO MAKE AN IMMEDIATE L TO 090 DEGS AND DSND TO 1800 FT. ATC CALLED TFC AT 11 O'CLOCK. WE SPOTTED TFC AT APPROX 300 FT ABOVE AND LESS THAN 1 MI. VISIBILITY THROUGH THE WINDSHIELD WAS POOR DUE TO MODERATE TO HVY RAIN. THE VECTORS TO INTERCEPT FROM THE E TO RE-ESTABLISH THE APCH WERE ALMOST AS BAD AS THE FIRST ATTEMPT. TFC WAS NOT THAT HVY IN THE AREA. SUPPLEMENTAL INFO FROM ACN 393062: WE STARTED A GAR AT APPROX 1-2 MI FROM PLAZA. AT THIS POINT IN TIME WE WERE BTWN 2200-2500 FT MSL.
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.