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A boeing 777-200 captain reported receiving a raas (runway awareness and advisory system) alert for short runway takeoff.
| Attributes | |
| ACN | 1490309 |
| Time | |
| Date | 201710 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff Taxi |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
Taxi instructions were to back taxi xxr; 180 for takeoff. The taxi chart did not appear to have a turnaround at the end. I did a 180 on the runway and took off. I got the raas (runway awareness and advisory system) alert for short runway somewhere near 80 knots. It was a max power takeoff. The aircraft was accelerating rapidly; I elected to continue and made a normal takeoff. After climb out I had an uncomfortable feeling about the whole chain of events - short runway; 180 on the runway; and the raas alert. As a crew we discussed and took a close look at everything. We noticed on the ipad taxi chart selected to moving map; on the widest scale a turnaround area was depicted. This would have solved the issue. Then we noticed the minimum width for the runway 180 is 157.4 feet. [This runway was only] 148 feet. I also came to the conclusion that while making the 180 I used up runway length.did not recognize the red flags. Short runway with a back taxi 180 for takeoff. A poor taxi chart depicting the turnaround. When the taxi instructions were issued there were clearly two red flags; short runway back taxi and 180 to take off. At this point I should have reviewed the 180 procedure since it is not a normal operation. That would have clued me that the runway was not wide enough and lead to inquire ATC.
Original NASA ASRS Text
Title: A Boeing 777-200 Captain reported receiving a RAAS (Runway Awareness and Advisory System) alert for short runway takeoff.
Narrative: Taxi instructions were to back taxi XXR; 180 for takeoff. The taxi chart did not appear to have a turnaround at the end. I did a 180 on the runway and took off. I got the RAAS (Runway Awareness and Advisory System) alert for short runway somewhere near 80 knots. It was a Max Power takeoff. The aircraft was accelerating rapidly; I elected to continue and made a normal takeoff. After climb out I had an uncomfortable feeling about the whole chain of events - short runway; 180 on the runway; and the RAAS alert. As a crew we discussed and took a close look at everything. We noticed on the iPad taxi chart selected to moving map; on the widest scale a turnaround area was depicted. This would have solved the issue. Then we noticed the minimum width for the runway 180 is 157.4 feet. [This runway was only] 148 feet. I also came to the conclusion that while making the 180 I used up runway length.Did not recognize the red flags. Short runway with a back taxi 180 for takeoff. A poor taxi chart depicting the turnaround. When the taxi instructions were issued there were clearly two red flags; short runway back taxi and 180 to take off. At this point I should have reviewed the 180 procedure since it is not a normal operation. That would have clued me that the runway was not wide enough and lead to inquire ATC.
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.