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While descending on the GS of runway 25L at lax, an MD80 flight crew received a TCASII RA. The flight crew climbed 300 ft before sighting the traffic. The traffic passed 300 ft below the air carrier and was outside of class B airspace.
| Attributes | |
| ACN | 332573 |
| Time | |
| Date | 199604 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | msl bound lower : 9000 msl bound upper : 9300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 332573 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 333010 |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
28 DME east of lax descending on the ILS to runway 25L, ATC pointed out traffic at approximately 10 O'clock. About 1 min later TCASII went TA and I inquired about the traffic to ATC and he said to maintain current altitude which was approximately 9000 ft MSL. When the TCASII went RA, we followed, and it lasted 3-4 seconds. I never saw the traffic as I was PF, but the first officer did. Looking at the class B lax chart, this happened outside class B airspace. Supplemental information from acn 333010: we climbed about 300 ft prior to getting a clear of conflict and resuming the descent. I saw aircraft about 1 mi in front and slightly low passing south to north across our flight path. We passed about 1 mi behind and about 300 ft above. Small twin never changed course due to our proximity during the time or our closest approach.
Original NASA ASRS Text
Title: WHILE DSNDING ON THE GS OF RWY 25L AT LAX, AN MD80 FLC RECEIVED A TCASII RA. THE FLC CLBED 300 FT BEFORE SIGHTING THE TFC. THE TFC PASSED 300 FT BELOW THE ACR AND WAS OUTSIDE OF CLASS B AIRSPACE.
Narrative: 28 DME E OF LAX DSNDING ON THE ILS TO RWY 25L, ATC POINTED OUT TFC AT APPROX 10 O'CLOCK. ABOUT 1 MIN LATER TCASII WENT TA AND I INQUIRED ABOUT THE TFC TO ATC AND HE SAID TO MAINTAIN CURRENT ALT WHICH WAS APPROX 9000 FT MSL. WHEN THE TCASII WENT RA, WE FOLLOWED, AND IT LASTED 3-4 SECONDS. I NEVER SAW THE TFC AS I WAS PF, BUT THE FO DID. LOOKING AT THE CLASS B LAX CHART, THIS HAPPENED OUTSIDE CLASS B AIRSPACE. SUPPLEMENTAL INFO FROM ACN 333010: WE CLBED ABOUT 300 FT PRIOR TO GETTING A CLR OF CONFLICT AND RESUMING THE DSCNT. I SAW ACFT ABOUT 1 MI IN FRONT AND SLIGHTLY LOW PASSING S TO N ACROSS OUR FLT PATH. WE PASSED ABOUT 1 MI BEHIND AND ABOUT 300 FT ABOVE. SMALL TWIN NEVER CHANGED COURSE DUE TO OUR PROX DURING THE TIME OR OUR CLOSEST APCH.
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.