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After diverting to an enroute airport due to the failure of their left generator the flight crew of a C-550 began to cross a runway--believing they had been cleared to do so--but were stopped by ground/tower advising they had not been cleared. The pertinent transmission may have been partially blocked.
| Attributes | |
| ACN | 1070935 |
| Time | |
| Date | 201303 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Citation II S2/Bravo (C550) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | AC Generator/Alternator |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 90 Flight Crew Total 6000 Flight Crew Type 700 |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 2300 Flight Crew Type 275 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Clearance Ground Incursion Runway |
Narrative:
When our left generator appeared to have failed mechanically while enroute; we elected to divert to a nearby airport. We shot the ILS to runway xx and everything went as planned; good CRM all the way to the ground. After landing we cleared the runway and ATC gave us taxi instructions to our selected FBO. As we approached runway xx at taxiway delta we asked if we were cleared to cross. ATC's response was partially blocked but I thought I heard that we were cleared to cross runway xx at delta. I read back; '...cleared to cross runway xx at delta'. There was no response from ATC. We cleared the runway left and right before proceeding across the runway. As we crossed ATC stated that we were not cleared to cross. At that point we were already across the runway.we were using nos charts which were very difficult to use versus the commercially published charts which we are planning on using from now on.although there seemed to be good communications going on I believe we must have been blocked by another aircraft. This possibility was increased because ATC was using the tower frequency for both ground and tower operations.
Original NASA ASRS Text
Title: After diverting to an enroute airport due to the failure of their left generator the flight crew of a C-550 began to cross a runway--believing they had been cleared to do so--but were stopped by Ground/Tower advising they had not been cleared. The pertinent transmission may have been partially blocked.
Narrative: When our left generator appeared to have failed mechanically while enroute; we elected to divert to a nearby airport. We shot the ILS to Runway XX and everything went as planned; good CRM all the way to the ground. After landing we cleared the runway and ATC gave us taxi instructions to our selected FBO. As we approached Runway XX at Taxiway Delta we asked if we were cleared to cross. ATC's response was partially blocked but I thought I heard that we were cleared to cross Runway XX at Delta. I read back; '...cleared to cross Runway XX at Delta'. There was no response from ATC. We cleared the runway left and right before proceeding across the runway. As we crossed ATC stated that we were not cleared to cross. At that point we were already across the runway.We were using NOS charts which were very difficult to use versus the commercially published charts which we are planning on using from now on.Although there seemed to be good communications going on I believe we must have been blocked by another aircraft. This possibility was increased because ATC was using the Tower frequency for both Ground and Tower operations.
Data retrieved from NASA's ASRS site as of July 2013 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.