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Flight crew cleared for knik 3 departure runway 32 was given runway change to runway 6 and flight crew then flew anc 9 departure without clearance.
| Attributes | |
| ACN | 160636 |
| Time | |
| Date | 199010 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : anc |
| State Reference | AK |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : anc tower : ric |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | climbout : initial climbout : takeoff |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 450 |
| ASRS Report | 160636 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Due to last minute switch in departure runways, the procedure to be used for departure changed, though it was still the knik 3. As we were originally cleared for knik 3 off runway 32 we had briefed for that runway. Snow removal equipment closed that runway, causing a change to runway 6L. The only significant differences between anc 9 and knik 3 is on 6L or 6R, none on 24, 32 or 14. Confusion resulting from the last minute change caused us to mistakenly fly the anc 9, resulting in a right turn after departure, not a left turn. This knik 3 off runway 6L is very rare for us. I do not believe I had ever flown it before. As a recommendation I think this type of error could be avoided by calling all the anc 9-KNIK 3 departures anc 9, except for the runway 6L/right turn to the north, which could be called knik 3, eliminating the commonality and possible confusion.
Original NASA ASRS Text
Title: FLT CREW CLEARED FOR KNIK 3 DEP RWY 32 WAS GIVEN RWY CHANGE TO RWY 6 AND FLT CREW THEN FLEW ANC 9 DEP WITHOUT CLRNC.
Narrative: DUE TO LAST MINUTE SWITCH IN DEP RWYS, THE PROC TO BE USED FOR DEP CHANGED, THOUGH IT WAS STILL THE KNIK 3. AS WE WERE ORIGINALLY CLRED FOR KNIK 3 OFF RWY 32 WE HAD BRIEFED FOR THAT RWY. SNOW REMOVAL EQUIP CLOSED THAT RWY, CAUSING A CHANGE TO RWY 6L. THE ONLY SIGNIFICANT DIFFERENCES BTWN ANC 9 AND KNIK 3 IS ON 6L OR 6R, NONE ON 24, 32 OR 14. CONFUSION RESULTING FROM THE LAST MINUTE CHANGE CAUSED US TO MISTAKENLY FLY THE ANC 9, RESULTING IN A RIGHT TURN AFTER DEP, NOT A LEFT TURN. THIS KNIK 3 OFF RWY 6L IS VERY RARE FOR US. I DO NOT BELIEVE I HAD EVER FLOWN IT BEFORE. AS A RECOMMENDATION I THINK THIS TYPE OF ERROR COULD BE AVOIDED BY CALLING ALL THE ANC 9-KNIK 3 DEPS ANC 9, EXCEPT FOR THE RWY 6L/R TURN TO THE N, WHICH COULD BE CALLED KNIK 3, ELIMINATING THE COMMONALITY AND POSSIBLE CONFUSION.
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.