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ATR42 flight crew believed that they had been given takeoff clearance, after tower controller gave them departure instructions, and taxied into position and were starting takeoff roll when controller advised that they had not been given takeoff clearance, nor had they been cleared onto the runway.
| Attributes | |
| ACN | 540638 |
| Time | |
| Date | 200203 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : vps.airport |
| State Reference | FL |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : vps.tower |
| Operator | common carrier : air carrier |
| Make Model Name | ATR 72 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 100 flight time total : 11000 flight time type : 700 |
| ASRS Report | 540658 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | incursion : runway non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued alert none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew Other |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
While holding for clearance to take off, tower called and said 'after takeoff turn left to 090 degrees.' he gave us an initial altitude and a new departure frequency. We both also thought he had cleared us for takeoff. As we taxied onto the runway, tower said 'XXX you're not cleared for takeoff.' after we were in position, tower told us we were 'cleared for takeoff, and by the way you were never cleared onto the runway.' I don't remember word for word what he said, but something in his phraseology made us both think we had clearance. He did the same thing with the air carrier in front of us. Everyone seemed confused by the wording in his clrncs.
Original NASA ASRS Text
Title: ATR42 FLC BELIEVED THAT THEY HAD BEEN GIVEN TKOF CLRNC, AFTER TWR CTLR GAVE THEM DEP INSTRUCTIONS, AND TAXIED INTO POS AND WERE STARTING TKOF ROLL WHEN CTLR ADVISED THAT THEY HAD NOT BEEN GIVEN TKOF CLRNC, NOR HAD THEY BEEN CLRED ONTO THE RWY.
Narrative: WHILE HOLDING FOR CLRNC TO TAKE OFF, TWR CALLED AND SAID 'AFTER TKOF TURN L TO 090 DEGS.' HE GAVE US AN INITIAL ALT AND A NEW DEP FREQ. WE BOTH ALSO THOUGHT HE HAD CLRED US FOR TKOF. AS WE TAXIED ONTO THE RWY, TWR SAID 'XXX YOU'RE NOT CLRED FOR TKOF.' AFTER WE WERE IN POS, TWR TOLD US WE WERE 'CLRED FOR TKOF, AND BY THE WAY YOU WERE NEVER CLRED ONTO THE RWY.' I DON'T REMEMBER WORD FOR WORD WHAT HE SAID, BUT SOMETHING IN HIS PHRASEOLOGY MADE US BOTH THINK WE HAD CLRNC. HE DID THE SAME THING WITH THE ACR IN FRONT OF US. EVERYONE SEEMED CONFUSED BY THE WORDING IN HIS CLRNCS.
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.