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Flight crew of medium large transport on approach to dtw misunderstood clearance and approached on wrong runway.
| Attributes | |
| ACN | 120323 |
| Time | |
| Date | 198908 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : dtw |
| State Reference | MI |
| Altitude | msl bound lower : 0 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : dtw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach descent other landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 17500 |
| ASRS Report | 120323 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : became reoriented |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Captain flying understood and wrote down expect 21R to dtw. First officer (PNF) heard and wrote down 21L expect. Approach controller gave 'descend to 4000' on glide slope, cleared for approach' (didn't say runway). Captain checked first officer frequency and was for 21R as was his. When aircraft broke out of clouds, captain saw aircraft turn on course in front of him. Asked first officer to verify proper runway and approach said 21L. Just then realized we were on wrong runway approach switched us to other runway. When captain said he'd heard 21R expect, controller couldn't remember which he'd said, but said 'no problem'. I think fatigue of both pilots and controller was factor. Near end of 12+ hour day and no idea how long controller on duty, but he sounded tired. Both dtw runways have same inbound courses and minimums nearly the same. 21R has DME which I found out the first officer was using for distance and had tuned although he was expecting 21L approach. Extra vigilance needed when everyone is tired.
Original NASA ASRS Text
Title: FLT CREW OF MLG ON APCH TO DTW MISUNDERSTOOD CLRNC AND APCHED ON WRONG RWY.
Narrative: CAPT FLYING UNDERSTOOD AND WROTE DOWN EXPECT 21R TO DTW. F/O (PNF) HEARD AND WROTE DOWN 21L EXPECT. APCH CTLR GAVE 'DSND TO 4000' ON GLIDE SLOPE, CLRED FOR APCH' (DIDN'T SAY RWY). CAPT CHECKED F/O FREQ AND WAS FOR 21R AS WAS HIS. WHEN ACFT BROKE OUT OF CLOUDS, CAPT SAW ACFT TURN ON COURSE IN FRONT OF HIM. ASKED F/O TO VERIFY PROPER RWY AND APCH SAID 21L. JUST THEN REALIZED WE WERE ON WRONG RWY APCH SWITCHED US TO OTHER RWY. WHEN CAPT SAID HE'D HEARD 21R EXPECT, CTLR COULDN'T REMEMBER WHICH HE'D SAID, BUT SAID 'NO PROBLEM'. I THINK FATIGUE OF BOTH PLTS AND CTLR WAS FACTOR. NEAR END OF 12+ HOUR DAY AND NO IDEA HOW LONG CTLR ON DUTY, BUT HE SOUNDED TIRED. BOTH DTW RWYS HAVE SAME INBND COURSES AND MINIMUMS NEARLY THE SAME. 21R HAS DME WHICH I FOUND OUT THE F/O WAS USING FOR DISTANCE AND HAD TUNED ALTHOUGH HE WAS EXPECTING 21L APCH. EXTRA VIGILANCE NEEDED WHEN EVERYONE IS TIRED.
Data retrieved from NASA's ASRS site as of August 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.