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Air cargo flight crew misinterprets taxi clearance, enters and taxis on runway instead of parallel taxiway.
| Attributes | |
| ACN | 146961 |
| Time | |
| Date | 199005 |
| Day | Wed |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : ind |
| State Reference | IN |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 7000 flight time type : 775 |
| ASRS Report | 146961 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 75 flight time total : 4500 flight time type : 300 |
| ASRS Report | 146962 |
| Events | |
| Anomaly | incursion : runway other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
On call to ground clearance issued to 'taxi to runway 23R.' previous nights we taxied via runway 32 and taxiway a to 23R so I went that way again this night. Aircraft behind me queried the controller and were told to taxi via taxiway B and a to runway 23. I asked controller if we had misunderstood the clearance and were told the clearance was to us B and a, but that using 32 was 'no problem.' that next night after this occurrence, all aircraft were cleared to 'taxi to runway 23R' and all aircraft were using runway 32 again. Inconsistency of specific clearance instructions led to confusion and I failed to question the different clearance. Supplemental information from acn 146962: the following night we received the same instructions of 'taxi to 23R' with no specifics as to which txwys to use. However, this time we questioned our route before beginning our taxi, and we were then instructed to 'taxi via beau and alpha.' an important factor is that runway 32 has been closed for a few months and the standard taxi route from ramp is via runway 32 and alpha. Having not flown into ind in 3 weeks, we also assumed that taxi route to be the same.
Original NASA ASRS Text
Title: AIR CARGO FLT CREW MISINTERPRETS TAXI CLRNC, ENTERS AND TAXIS ON RWY INSTEAD OF PARALLEL TXWY.
Narrative: ON CALL TO GND CLRNC ISSUED TO 'TAXI TO RWY 23R.' PREVIOUS NIGHTS WE TAXIED VIA RWY 32 AND TXWY A TO 23R SO I WENT THAT WAY AGAIN THIS NIGHT. ACFT BEHIND ME QUERIED THE CTLR AND WERE TOLD TO TAXI VIA TXWY B AND A TO RWY 23. I ASKED CTLR IF WE HAD MISUNDERSTOOD THE CLRNC AND WERE TOLD THE CLRNC WAS TO US B AND A, BUT THAT USING 32 WAS 'NO PROB.' THAT NEXT NIGHT AFTER THIS OCCURRENCE, ALL ACFT WERE CLRED TO 'TAXI TO RWY 23R' AND ALL ACFT WERE USING RWY 32 AGAIN. INCONSISTENCY OF SPECIFIC CLRNC INSTRUCTIONS LED TO CONFUSION AND I FAILED TO QUESTION THE DIFFERENT CLRNC. SUPPLEMENTAL INFO FROM ACN 146962: THE FOLLOWING NIGHT WE RECEIVED THE SAME INSTRUCTIONS OF 'TAXI TO 23R' WITH NO SPECIFICS AS TO WHICH TXWYS TO USE. HOWEVER, THIS TIME WE QUESTIONED OUR RTE BEFORE BEGINNING OUR TAXI, AND WE WERE THEN INSTRUCTED TO 'TAXI VIA BEAU AND ALPHA.' AN IMPORTANT FACTOR IS THAT RWY 32 HAS BEEN CLOSED FOR A FEW MONTHS AND THE STANDARD TAXI RTE FROM RAMP IS VIA RWY 32 AND ALPHA. HAVING NOT FLOWN INTO IND IN 3 WKS, WE ALSO ASSUMED THAT TAXI RTE TO BE THE SAME.
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.