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Near midair collision between an medium large transport air carrier and an small aircraft sel aircraft during the medium large transport aircraft on 6 mi back course approach and the other aircraft coming in as opposite direction traffic.
| Attributes | |
| ACN | 250671 |
| Time | |
| Date | 199309 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : yak |
| State Reference | AK |
| Altitude | msl bound lower : 1300 msl bound upper : 1300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time type : 300 |
| ASRS Report | 250671 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
On localizer DME (back course) runway 29, yakutat at 6 DME, 1300 ft MSL on centerline. Field just in sight (WX at 1700 plus, light rain showers). Spotted high wing red/black aircraft (possible tail dragger) clibing up at us on extended centerline runway 9. No lights on his aircraft. We both moved slightly left and passed right to right (he went under our right wing at 400 ft below us). We continued into an uneventful landing at yak, runway 29. We again checked with jnu radio/yak traffic on CTAF 123.6 (immediately after occurrence at 6 DME, 1300 ft MSL). Jnu radio reported 'no known traffic in area' and we then reported 'a close one.'
Original NASA ASRS Text
Title: NMAC BTWN AN MLG ACR AND AN SMA SEL ACFT DURING THE MLG ACFT ON 6 MI BACK COURSE APCH AND THE OTHER ACFT COMING IN AS OPPOSITE DIRECTION TFC.
Narrative: ON LOC DME (BACK COURSE) RWY 29, YAKUTAT AT 6 DME, 1300 FT MSL ON CTRLINE. FIELD JUST IN SIGHT (WX AT 1700 PLUS, LIGHT RAIN SHOWERS). SPOTTED HIGH WING RED/BLACK ACFT (POSSIBLE TAIL DRAGGER) CLIBING UP AT US ON EXTENDED CTRLINE RWY 9. NO LIGHTS ON HIS ACFT. WE BOTH MOVED SLIGHTLY L AND PASSED R TO R (HE WENT UNDER OUR R WING AT 400 FT BELOW US). WE CONTINUED INTO AN UNEVENTFUL LNDG AT YAK, RWY 29. WE AGAIN CHKED WITH JNU RADIO/YAK TFC ON CTAF 123.6 (IMMEDIATELY AFTER OCCURRENCE AT 6 DME, 1300 FT MSL). JNU RADIO RPTED 'NO KNOWN TFC IN AREA' AND WE THEN RPTED 'A CLOSE ONE.'
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.