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San tower controller reported confusion with guidance on issuing crossing clearance to aircraft too early.
| Attributes | |
| ACN | 1450965 |
| Time | |
| Date | 201705 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | SAN.Tower |
| State Reference | CA |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | Medium Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Route In Use | None |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Medium Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Other / Unknown |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 6 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Clearance Ground Incursion Runway |
Narrative:
Ground had coordinated to cross aircraft X behind aircraft Y at bravo 4. Aircraft Y was on a 1.5 mile final and aircraft X was approaching bravo 6 and ground told aircraft X to cross the runway at bravo 4 while aircraft Y was still on a 1 mile final. I said 'no!' since aircraft had not passed the intersection yet and was still in the air. Controller said; 'it's ok because she said bravo 4.' I assume they are using the anticipated runway separation.I tried to get clarification if this is allowed but do not have an answer. It seems to leave a lot of room for error/runway incursion. Aircraft X could have crossed at bravo 6 since they cross there half the time; thinking it's what controller meant since there was someone on final or aircraft Y could have tried to speed up to cross at bravo 4 before the landing traffic etc. I would like clarification/reference in 7110.65 where either you are allowed to or when you are [not] allowed to say cross. We have had a lot of briefings on runway incursions but maybe reiterate when you are permitted to start an aircraft to cross. It seems to be a widespread problem here that controllers say cross way too early; when landing or departing aircraft are still a whole intersection from reaching the crossing point.
Original NASA ASRS Text
Title: SAN Tower Controller reported confusion with guidance on issuing crossing clearance to aircraft too early.
Narrative: Ground had coordinated to cross Aircraft X behind Aircraft Y at Bravo 4. Aircraft Y was on a 1.5 mile final and Aircraft X was approaching Bravo 6 and ground told Aircraft X to cross the runway at Bravo 4 while Aircraft Y was still on a 1 mile final. I said 'No!' Since aircraft had not passed the intersection yet and was still in the air. Controller said; 'It's OK because she said Bravo 4.' I assume they are using the anticipated runway separation.I tried to get clarification if this is allowed but do not have an answer. It seems to leave a lot of room for error/runway incursion. Aircraft X could have crossed at Bravo 6 since they cross there half the time; thinking it's what controller meant since there was someone on final or Aircraft Y could have tried to speed up to cross at Bravo 4 before the landing traffic etc. I would like clarification/reference in 7110.65 where either you are allowed to or when you are [not] allowed to say cross. We have had a lot of briefings on runway incursions but maybe reiterate when you are permitted to start an aircraft to cross. It seems to be a widespread problem here that controllers say cross way too early; when landing or departing aircraft are still a whole intersection from reaching the crossing point.
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.