# TBFM Forecast scheduled\_runway\_arrival\_time

**URL:** <https://community.drivendata.org/t/tbfm-forecast-scheduled-runway-arrival-time/8678>\
**Category:** Pushback to the Future Challenge\
**Created:** [March 2, 2023, 4:50pm UTC](https://community.drivendata.org/t/tbfm-forecast-scheduled-runway-arrival-time/8678 "2023-03-02T16:50:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![clement.j.robinson](https://avatars.discourse-cdn.com/v4/letter/c/838e76/32.png) [@clement.j.robinson](https://community.drivendata.org/u/clement.j.robinson)\
**Post date:** [March 2, 2023, 4:50pm UTC](https://community.drivendata.org/t/tbfm-forecast-scheduled-runway-arrival-time/8678/1 "2023-03-02T16:50:41Z")

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In the description of the \_tbfm.csv files there is supposed to be a field called scheduled\_runway\_arrival\_time. However, I am seeing a field called scheduled\_runway\_estimated\_time  
instead. I am unsure how to interpret the meaning of this column, especially with their being multiple rows per gufi. Could you give a little more context on what scheduled\_runway\_estimated\_time means?

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**Author:** ![rbgb](https://avatars.discourse-cdn.com/v4/letter/r/898d66/32.png) [@rbgb](https://community.drivendata.org/u/rbgb)\
**Post date:** [March 3, 2023, 6:30pm UTC](https://community.drivendata.org/t/tbfm-forecast-scheduled-runway-arrival-time/8678/2 "2023-03-03T18:30:58Z")

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Hi @clement.j.robinson , thanks for your question. It looks like you found a typo in our documentation! The documentation should read:

- `scheduled_runway_estimated_time`: Scheduled time that the flight will arrive at the runway

It is present multiple times per GUFI in cases where the scheduled time changes during the lifespan of a flight. The `timestamp` field on the row will tell you _when_ that scheduled time was estimated.