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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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| Attributes | |
| ACN | 295022 |
| Time | |
| Date | 199501 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : anc |
| State Reference | AK |
| Altitude | agl bound lower : 300 agl bound upper : 300 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : anc tower : lga |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 180 flight time total : 12000 flight time type : 9000 |
| ASRS Report | 296022 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 800 |
| ASRS Report | 294675 |
| Events | |
| Anomaly | inflight encounter : weather inflight encounter other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
Approaching to land at anc, runway 6L. Runway 6R closed, runway 32 in use for takeoff. OAT about plus 2 degrees fahrenheit. Operating aircraft (especially on takeoff roll) were generating ice fog. Prevailing visibility was better than 5 mi, with clear skies. A light breeze was blowing out of the north. Approaching OM cleared for a visual approach to runway 6L, following a 737 on a visual approximately 4 mi ahead. Somewhere inside the OM, a heavy dc-10 freight cleared for takeoff. Runway gradually became obscured, although runway 6R and a parallel taxiway were clearly visible. I continued the approach assuming that the patch of ice fog was caused by the dc-10 starting a takeoff roll on runway 32. I directed the copilot to have anc tower step runway and approach lights to maximum, and stopped descent. As we cleared the ice fog patch to our surprise noticed dc-10 still in position. (I now believe the dc-10 crew was waiting for ice fog along takeoff path to dissipate.) I began descending again, and tower told dc-10, 'I need you to start takeoff roll, now!' we landed slightly long, and in the flare encountered jet blast from dc-10. 1 sharp movement to the right, 1 to the left (no appreciable roll), and then a normal landing. In response: 1) obtaining either a local approach clearance or continuing to circle till fog dissipated would have been a lot less stressful! 2) ignore time pressure. Company was holding a connecting long haul flight.
Original NASA ASRS Text
Title: WAKE TURB ENCOUNTER DURING LNDG.
Narrative: APCHING TO LAND AT ANC, RWY 6L. RWY 6R CLOSED, RWY 32 IN USE FOR TKOF. OAT ABOUT PLUS 2 DEGS FAHRENHEIT. OPERATING ACFT (ESPECIALLY ON TKOF ROLL) WERE GENERATING ICE FOG. PREVAILING VISIBILITY WAS BETTER THAN 5 MI, WITH CLR SKIES. A LIGHT BREEZE WAS BLOWING OUT OF THE N. APCHING OM CLRED FOR A VISUAL APCH TO RWY 6L, FOLLOWING A 737 ON A VISUAL APPROX 4 MI AHEAD. SOMEWHERE INSIDE THE OM, A HVY DC-10 FREIGHT CLRED FOR TKOF. RWY GRADUALLY BECAME OBSCURED, ALTHOUGH RWY 6R AND A PARALLEL TXWY WERE CLRLY VISIBLE. I CONTINUED THE APCH ASSUMING THAT THE PATCH OF ICE FOG WAS CAUSED BY THE DC-10 STARTING A TKOF ROLL ON RWY 32. I DIRECTED THE COPLT TO HAVE ANC TWR STEP RWY AND APCH LIGHTS TO MAX, AND STOPPED DSCNT. AS WE CLRED THE ICE FOG PATCH TO OUR SURPRISE NOTICED DC-10 STILL IN POS. (I NOW BELIEVE THE DC-10 CREW WAS WAITING FOR ICE FOG ALONG TKOF PATH TO DISSIPATE.) I BEGAN DSNDING AGAIN, AND TWR TOLD DC-10, 'I NEED YOU TO START TKOF ROLL, NOW!' WE LANDED SLIGHTLY LONG, AND IN THE FLARE ENCOUNTERED JET BLAST FROM DC-10. 1 SHARP MOVEMENT TO THE R, 1 TO THE L (NO APPRECIABLE ROLL), AND THEN A NORMAL LNDG. IN RESPONSE: 1) OBTAINING EITHER A LCL APCH CLRNC OR CONTINUING TO CIRCLE TILL FOG DISSIPATED WOULD HAVE BEEN A LOT LESS STRESSFUL! 2) IGNORE TIME PRESSURE. COMPANY WAS HOLDING A CONNECTING LONG HAUL FLT.
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.