 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737 captain reported ATC told them they took off after their clearance void time.
| Attributes | |
| ACN | 1618760 |
| Time | |
| Date | 201902 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | EUG.Airport |
| State Reference | OR |
| Environment | |
| Flight Conditions | IMC |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Experience | Flight Crew Last 90 Days 150 Flight Crew Total 8899 Flight Crew Type 3167 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
In eug using no tower communications due to early morning the tower was not open. Got ATC clearance from center; void if not off by xa:57. We were rolling down the runway with xa:57 on the UTC clock. ATC starts to call us saying they haven't heard from us and we are passed our void time. I look down at the clock and it still says xa:57. We lifted off and the aircraft clock still showed xa:57. My question is if we are told a clearance is void if not off by xa:57; does that mean we have to be airborne by xa:56 or is it like I think xa:57? To me it would be the clock showing xa:58; that would be the void time. Also our clocks don't show the time in seconds so starting a takeoff with the clock showing us right at the minute before our clearance voids seems appropriateour clocks are synced to GPS so I think they are accurate. I obviously wasn't going to high speed abort a takeoff due to ATC calling me saying my clearance was void; but it was distracting. We were transmitting on unicom but monitoring seattle center on takeoff. Also I am certain my clock still showed xa:57 at liftoff so why does ACARS show xa:58. Does ACARS round up?
Original NASA ASRS Text
Title: B737 Captain reported ATC told them they took off after their clearance void time.
Narrative: In EUG using no Tower communications due to early morning the Tower was not open. Got ATC clearance from Center; void if not off by XA:57. We were rolling down the runway with XA:57 on the UTC clock. ATC starts to call us saying they haven't heard from us and we are passed our void time. I look down at the clock and it still says XA:57. We lifted off and the aircraft clock still showed XA:57. My question is if we are told a clearance is void if not off by XA:57; does that mean we have to be airborne by XA:56 or is it like I think XA:57? To me it would be the clock showing XA:58; that would be the void time. Also our clocks don't show the time in seconds so starting a takeoff with the clock showing us right at the minute before our clearance voids seems appropriateOur clocks are synced to GPS so I think they are accurate. I obviously wasn't going to high speed abort a takeoff due to ATC calling me saying my clearance was void; but it was distracting. We were transmitting on UNICOM but monitoring Seattle center on takeoff. Also I am certain my clock still showed XA:57 at liftoff so why does ACARS show XA:58. Does ACARS round up?
Data retrieved from NASA's ASRS site 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.