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DC9-40 aircraft with taxi instructions to hold short of taxiway for another aircraft. Flight crew didn't clarify where the aircraft was coming from nor did ground controller give clear directions.
| Attributes | |
| ACN | 370427 |
| Time | |
| Date | 199706 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 40 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : holding ground other : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Airbus Industrie Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 250 flight time total : 6000 flight time type : 850 |
| ASRS Report | 370427 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | incursion : runway non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
Captain was taxiing aircraft northbound on taxiway Y. We had just switched ground controllers from 119.45 to 121.8, having held short of taxiway K while facing wbound on taxiway V. New ground controller's (121.8) instructions were to taxi north on taxiway Y, hold short of taxiway Y12, and wait for the airbus left to right, taxiway Y is a ns taxiway. We assumed the airbus would be on the parallel taxiway K, proceeding south, and that we were to continue through (northbound) taxiway Y12 after the airbus had passed off of our right. The controller did not tell us the airbus was coming from the hangar, on the other side of runway 3L/21R, a position 90 degrees to our left. As we approached taxiway Y12 we did not see the airbus in our normal area of vision (slightly left, directly ahead, or slightly right), and we assumed the airbus had already passed off of our right, north to south on taxiway K. We proceeded into taxiway Y12 northbound. About 1/2 way into taxiway Y12, the controller stated that we were supposed to hold short of taxiway Y12, but now to expedite through taxiway Y12 and continue. We looked at each other in surprise, taxied through, and I asked controller, 'where's the airbus?' controller stated 'he's behind you now, he had to stop on the runway while you went through taxiway Y12, with an aircraft on short final to the runway.' controller stated nothing about a go around or any other type of conflict, merely adding that the airbus had come from the hangar to cross the runway. The original taxi instructions, while read back by me verbatim, were somewhat unclr, as we weren't sure if we were supposed to proceed after the airbus passed, or wait further clearance. Also unclr as to where to look for the airbus (90 degrees, hard to the left of our position). While aircraft do cross the runway in this fashion, it is not the normal area for crossing, and should be emphasized when it does occur.
Original NASA ASRS Text
Title: DC9-40 ACFT WITH TAXI INSTRUCTIONS TO HOLD SHORT OF TXWY FOR ANOTHER ACFT. FLC DIDN'T CLARIFY WHERE THE ACFT WAS COMING FROM NOR DID GND CTLR GIVE CLR DIRECTIONS.
Narrative: CAPT WAS TAXIING ACFT NBOUND ON TXWY Y. WE HAD JUST SWITCHED GND CTLRS FROM 119.45 TO 121.8, HAVING HELD SHORT OF TXWY K WHILE FACING WBOUND ON TXWY V. NEW GND CTLR'S (121.8) INSTRUCTIONS WERE TO TAXI N ON TXWY Y, HOLD SHORT OF TXWY Y12, AND WAIT FOR THE AIRBUS L TO R, TXWY Y IS A NS TXWY. WE ASSUMED THE AIRBUS WOULD BE ON THE PARALLEL TXWY K, PROCEEDING S, AND THAT WE WERE TO CONTINUE THROUGH (NBOUND) TXWY Y12 AFTER THE AIRBUS HAD PASSED OFF OF OUR R. THE CTLR DID NOT TELL US THE AIRBUS WAS COMING FROM THE HANGAR, ON THE OTHER SIDE OF RWY 3L/21R, A POS 90 DEGS TO OUR L. AS WE APCHED TXWY Y12 WE DID NOT SEE THE AIRBUS IN OUR NORMAL AREA OF VISION (SLIGHTLY L, DIRECTLY AHEAD, OR SLIGHTLY R), AND WE ASSUMED THE AIRBUS HAD ALREADY PASSED OFF OF OUR R, N TO S ON TXWY K. WE PROCEEDED INTO TXWY Y12 NBOUND. ABOUT 1/2 WAY INTO TXWY Y12, THE CTLR STATED THAT WE WERE SUPPOSED TO HOLD SHORT OF TXWY Y12, BUT NOW TO EXPEDITE THROUGH TXWY Y12 AND CONTINUE. WE LOOKED AT EACH OTHER IN SURPRISE, TAXIED THROUGH, AND I ASKED CTLR, 'WHERE'S THE AIRBUS?' CTLR STATED 'HE'S BEHIND YOU NOW, HE HAD TO STOP ON THE RWY WHILE YOU WENT THROUGH TXWY Y12, WITH AN ACFT ON SHORT FINAL TO THE RWY.' CTLR STATED NOTHING ABOUT A GAR OR ANY OTHER TYPE OF CONFLICT, MERELY ADDING THAT THE AIRBUS HAD COME FROM THE HANGAR TO CROSS THE RWY. THE ORIGINAL TAXI INSTRUCTIONS, WHILE READ BACK BY ME VERBATIM, WERE SOMEWHAT UNCLR, AS WE WEREN'T SURE IF WE WERE SUPPOSED TO PROCEED AFTER THE AIRBUS PASSED, OR WAIT FURTHER CLRNC. ALSO UNCLR AS TO WHERE TO LOOK FOR THE AIRBUS (90 DEGS, HARD TO THE L OF OUR POS). WHILE ACFT DO CROSS THE RWY IN THIS FASHION, IT IS NOT THE NORMAL AREA FOR XING, AND SHOULD BE EMPHASIZED WHEN IT DOES OCCUR.
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.