 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Reporter claims adjacent sector applied visual separation after controller lost 5 mi wake turbulence spacing between a B737 following a B767.
| Attributes | |
| ACN | 489665 |
| Time | |
| Date | 200010 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : lax.vortac |
| State Reference | CA |
| Altitude | msl single value : 2500 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 24r |
| Flight Phase | descent : vacating altitude |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 24r |
| Flight Phase | descent : vacating altitude |
| Route In Use | approach : visual arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 13 |
| ASRS Report | 489665 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach instruction : instructor |
| Qualification | controller : radar |
| Events | |
| Anomaly | inflight encounter : wake turbulence non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | controller : separated traffic |
| Miss Distance | horizontal : 27000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
Air carrier Y was turned on for an ILS runway 24R 4 1/2 mi behind a heavy B767. Minimum separation is 5 mi. I called the handoff position for ar-2. Ar-2 (stadium) was working both aircraft. After air carrier Y was directly behind the B767, visual separation was applied. Visual separation was applied after the loss of in-trail separation had occurred.
Original NASA ASRS Text
Title: RPTR CLAIMS ADJACENT SECTOR APPLIED VISUAL SEPARATION AFTER CTLR LOST 5 MI WAKE TURB SPACING BTWN A B737 FOLLOWING A B767.
Narrative: ACR Y WAS TURNED ON FOR AN ILS RWY 24R 4 1/2 MI BEHIND A HVY B767. MINIMUM SEPARATION IS 5 MI. I CALLED THE HDOF POS FOR AR-2. AR-2 (STADIUM) WAS WORKING BOTH ACFT. AFTER ACR Y WAS DIRECTLY BEHIND THE B767, VISUAL SEPARATION WAS APPLIED. VISUAL SEPARATION WAS APPLIED AFTER THE LOSS OF IN-TRAIL SEPARATION HAD OCCURRED.
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.