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B737-700 captain reported a track deviation resulted when the flight crew tried to reprogram the FMC following a late clearance change from ATC.
| Attributes | |
| ACN | 1579260 |
| Time | |
| Date | 201809 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | SNA.Airport |
| State Reference | CA |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR OHSEA |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 409 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
Flying the ohsea 1 arrival into sna. The RNAV (rnp) Z runway 20R was loaded into FMC. We were told to expect the RNAV (GPS) Y runway 20R. At two-miles from klevr I programmed the FMC with the new approach. Then as I was cleaning up the legs page; the LNAV disconnect flashed in the scratch pad momentarily and the aircraft went straight instead of making the turn at klevr. We corrected the turn to get back on course. ATC asked our heading and we told them what happened. He gave us a heading and said no problem. He vectored us to final and we landed uneventfully.
Original NASA ASRS Text
Title: B737-700 Captain reported a track deviation resulted when the flight crew tried to reprogram the FMC following a late clearance change from ATC.
Narrative: Flying the OHSEA 1 Arrival into SNA. The RNAV (RNP) Z Runway 20R was loaded into FMC. We were told to expect the RNAV (GPS) Y Runway 20R. At two-miles from KLEVR I programmed the FMC with the new approach. Then as I was cleaning up the LEGS page; the LNAV disconnect flashed in the scratch pad momentarily and the aircraft went straight instead of making the turn at KLEVR. We corrected the turn to get back on course. ATC asked our heading and we told them what happened. He gave us a heading and said no problem. He vectored us to final and we landed uneventfully.
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.