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An EMB120 on visual approach to runway 25R lax, maintains visual separation on the aircraft to runway 25L. The EMB120 stays one quarter mi behind the other aircraft and one DOT high on the GS. In doing so, the other aircraft gets many TCASII RA's and the flight crew becomes angry.
| Attributes | |
| ACN | 418820 |
| Time | |
| Date | 199811 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : lax airport : lax |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 6500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : lax |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| ASRS Report | 418820 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Miss Distance | horizontal : 1000 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared for a visual approach to lax runway 25R to follow an xyz B757 on an approach to runway 25L. Flight visibility was unlimited and we saw airport and xyz (initially at 12 O'clock position and 5 mi). We were given a speed of 210 KTS and a heading of 290 degrees to intercept final, which put us on a convergence course with the B757. I passed over the B757 flight path by 1500 ft (according to our TCASII) and approximately 1 mi in trail, then I descended on our runway 25R centerline to approximately 1 DOT high and 1/4 mi in trail (lateral navigation via visual and runway 25R localizer). Xyz pilot complained to TRACON of TCASII RA. They informed him of our presence and that we were on a visual approach to runway 25R and maintaining visual separation with him. He again complained to lax tower and said he 'would file a report.' throughout approach (from OM to ground) we maintained approximately 1/4 in trail and 1 DOT high on GS. I feel this is a much safer position to be in regarding wake turbulence avoidance compared with 2-3 mi in trail which is where I think the xyz pilot would have wanted us.
Original NASA ASRS Text
Title: AN EMB120 ON VISUAL APCH TO RWY 25R LAX, MAINTAINS VISUAL SEPARATION ON THE ACFT TO RWY 25L. THE EMB120 STAYS ONE QUARTER MI BEHIND THE OTHER ACFT AND ONE DOT HIGH ON THE GS. IN DOING SO, THE OTHER ACFT GETS MANY TCASII RA'S AND THE FLC BECOMES ANGRY.
Narrative: WE WERE CLRED FOR A VISUAL APCH TO LAX RWY 25R TO FOLLOW AN XYZ B757 ON AN APCH TO RWY 25L. FLT VISIBILITY WAS UNLIMITED AND WE SAW ARPT AND XYZ (INITIALLY AT 12 O'CLOCK POS AND 5 MI). WE WERE GIVEN A SPD OF 210 KTS AND A HDG OF 290 DEGS TO INTERCEPT FINAL, WHICH PUT US ON A CONVERGENCE COURSE WITH THE B757. I PASSED OVER THE B757 FLT PATH BY 1500 FT (ACCORDING TO OUR TCASII) AND APPROX 1 MI IN TRAIL, THEN I DSNDED ON OUR RWY 25R CTRLINE TO APPROX 1 DOT HIGH AND 1/4 MI IN TRAIL (LATERAL NAV VIA VISUAL AND RWY 25R LOC). XYZ PLT COMPLAINED TO TRACON OF TCASII RA. THEY INFORMED HIM OF OUR PRESENCE AND THAT WE WERE ON A VISUAL APCH TO RWY 25R AND MAINTAINING VISUAL SEPARATION WITH HIM. HE AGAIN COMPLAINED TO LAX TWR AND SAID HE 'WOULD FILE A RPT.' THROUGHOUT APCH (FROM OM TO GND) WE MAINTAINED APPROX 1/4 IN TRAIL AND 1 DOT HIGH ON GS. I FEEL THIS IS A MUCH SAFER POS TO BE IN REGARDING WAKE TURB AVOIDANCE COMPARED WITH 2-3 MI IN TRAIL WHICH IS WHERE I THINK THE XYZ PLT WOULD HAVE WANTED US.
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.