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Near midair collision. Flight crew of an mdt during a final visual approach stopped descent and climbed in response to a TCASII RA caused by another aircraft in close proximity for a parallel runway.
| Attributes | |
| ACN | 334106 |
| Time | |
| Date | 199604 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | msl bound lower : 3000 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent other |
| Route In Use | approach : visual arrival other arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Saab-Scania Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 6000 flight time type : 320 |
| ASRS Report | 334106 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 500 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Just prior to hundy (12.21 lax), socal asked if field was in sight, changed landing runway to 25R and slow speed to 180 KTS and stated that traffic ahead was 'heavy' aircraft. Approaching 3400 ft and slightly left of runway 25R centerline (localizer course), received TCASII 'TA' at 3100 ft. Gear and flaps were extended as speed permitted prior to 'TA.' could not transmit to socal because of non stop dialogue (socal/other aircraft on approach behind us). Slowing descent to 3200 ft, received TCASII 'RA' at 3000 ft. Immediate level off/climb initiated to 3500 ft. 'RA' then 'TA' shortly disappeared. Simultaneously PNF switched to tower and reported 'RA.' tower said traffic was saab commuter, and commuter had us in sight. Visual approach, landing and taxi-in were uneventful. Upon contacting ground control we asked for socal approach telephone number. Approximately 15 mins after landing, called socal approach and supervisor did not know about incident. He, also, stated that sector supervisor was 'on break.' I stated our situation and told him it was an 'near midair collision.' I also said a report would be filed. 3 important items were not communicated. No advisory of 'heavy' aircraft preceding us. No advisory of traffic and saab commuter flying parallel approach, or, that commuter had us in sight. No switch-over to tower.
Original NASA ASRS Text
Title: NMAC. FLC OF AN MDT DURING A FINAL VISUAL APCH STOPPED DSCNT AND CLBED IN RESPONSE TO A TCASII RA CAUSED BY ANOTHER ACFT IN CLOSE PROX FOR A PARALLEL RWY.
Narrative: JUST PRIOR TO HUNDY (12.21 LAX), SOCAL ASKED IF FIELD WAS IN SIGHT, CHANGED LNDG RWY TO 25R AND SLOW SPD TO 180 KTS AND STATED THAT TFC AHEAD WAS 'HVY' ACFT. APCHING 3400 FT AND SLIGHTLY L OF RWY 25R CTRLINE (LOC COURSE), RECEIVED TCASII 'TA' AT 3100 FT. GEAR AND FLAPS WERE EXTENDED AS SPD PERMITTED PRIOR TO 'TA.' COULD NOT XMIT TO SOCAL BECAUSE OF NON STOP DIALOGUE (SOCAL/OTHER ACFT ON APCH BEHIND US). SLOWING DSCNT TO 3200 FT, RECEIVED TCASII 'RA' AT 3000 FT. IMMEDIATE LEVEL OFF/CLB INITIATED TO 3500 FT. 'RA' THEN 'TA' SHORTLY DISAPPEARED. SIMULTANEOUSLY PNF SWITCHED TO TWR AND RPTED 'RA.' TWR SAID TFC WAS SAAB COMMUTER, AND COMMUTER HAD US IN SIGHT. VISUAL APCH, LNDG AND TAXI-IN WERE UNEVENTFUL. UPON CONTACTING GND CTL WE ASKED FOR SOCAL APCH TELEPHONE NUMBER. APPROX 15 MINS AFTER LNDG, CALLED SOCAL APCH AND SUPVR DID NOT KNOW ABOUT INCIDENT. HE, ALSO, STATED THAT SECTOR SUPVR WAS 'ON BREAK.' I STATED OUR SIT AND TOLD HIM IT WAS AN 'NMAC.' I ALSO SAID A RPT WOULD BE FILED. 3 IMPORTANT ITEMS WERE NOT COMMUNICATED. NO ADVISORY OF 'HVY' ACFT PRECEDING US. NO ADVISORY OF TFC AND SAAB COMMUTER FLYING PARALLEL APCH, OR, THAT COMMUTER HAD US IN SIGHT. NO SWITCH-OVER TO TWR.
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.