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B747 aircraft on arrival and maintaining 10000 ft was advised by TRACON of 12 O'clock traffic at 9500 ft. Apparently the VFR traffic pilot commenced climbing into reporter aircraft requiring evasive action.
| Attributes | |
| ACN | 373647 |
| Time | |
| Date | 199707 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | msl bound lower : 10000 msl bound upper : 11500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax artcc : zjx |
| Operator | common carrier : air carrier |
| Make Model Name | B747-100 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute airway : lax |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 9500 flight time type : 4200 |
| ASRS Report | 373647 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 100 vertical : 10 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Inter Facility Coordination Failure |
Narrative:
On approach to runway 25L lax at 27 DME, ATC instructed us to level and maintain 10000 ft due to VFR traffic at 9500 ft. As we maintained 10000 ft, our TCASII showed the traffic, now yellow TA, climbing up towards us, 12 O'clock, 5 mi (approximately). As he got to within 300 ft or so, we started evasive action, and got a TCASII RA 'climb, climb now.' we climbed to 11500 ft while advising ATC. After clear of traffic (we never saw him), we continued approach and landed normally. A near miss report has been filed with socal TRACON. It appeared that the VFR aircraft was climbing up the ILS going the wrong way. Hope he got flipped over from our wake turbulence during the emergency climb maneuver.
Original NASA ASRS Text
Title: B747 ACFT ON ARR AND MAINTAINING 10000 FT WAS ADVISED BY TRACON OF 12 O'CLOCK TFC AT 9500 FT. APPARENTLY THE VFR TFC PLT COMMENCED CLBING INTO RPTR ACFT REQUIRING EVASIVE ACTION.
Narrative: ON APCH TO RWY 25L LAX AT 27 DME, ATC INSTRUCTED US TO LEVEL AND MAINTAIN 10000 FT DUE TO VFR TFC AT 9500 FT. AS WE MAINTAINED 10000 FT, OUR TCASII SHOWED THE TFC, NOW YELLOW TA, CLBING UP TOWARDS US, 12 O'CLOCK, 5 MI (APPROX). AS HE GOT TO WITHIN 300 FT OR SO, WE STARTED EVASIVE ACTION, AND GOT A TCASII RA 'CLB, CLB NOW.' WE CLBED TO 11500 FT WHILE ADVISING ATC. AFTER CLR OF TFC (WE NEVER SAW HIM), WE CONTINUED APCH AND LANDED NORMALLY. A NEAR MISS RPT HAS BEEN FILED WITH SOCAL TRACON. IT APPEARED THAT THE VFR ACFT WAS CLBING UP THE ILS GOING THE WRONG WAY. HOPE HE GOT FLIPPED OVER FROM OUR WAKE TURB DURING THE EMER CLB MANEUVER.
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.