 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737 captain reported a track deviation occurred on the hawkz 7 arrival into sea when the aircraft dropped out of LNAV into heading sel.
| Attributes | |
| ACN | 1619234 |
| Time | |
| Date | 201902 |
| Place | |
| Locale Reference | SEA.Airport |
| State Reference | WA |
| Aircraft 1 | |
| Make Model Name | B737 Next Generation Undifferentiated |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR HAWKZ 7 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 283 Flight Crew Type 12000 |
| Events | |
| Anomaly | Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types |
Narrative:
On the hawkz 7 arrival into sea; in LNAV and VNAV. Just before cofay intersection; we changed the approach for runway 16R from the RNAV Z to the ILS. We then looked up and noticed the aircraft in heading mode. A slight course deviation east of intended flight path occurred before direct to breve was entered and LNAV re-engaged. Proceeded on arrival to landing. Loss of LNAV was unexpected; and a small period of time elapsed before we noticed. Better attention in my role of pilot monitoring next time.
Original NASA ASRS Text
Title: B737 Captain reported a track deviation occurred on the HAWKZ 7 arrival into SEA when the aircraft dropped out of LNAV into HDG SEL.
Narrative: On the HAWKZ 7 arrival into SEA; in LNAV and VNAV. Just before COFAY Intersection; we changed the approach for Runway 16R from the RNAV Z to the ILS. We then looked up and noticed the aircraft in heading mode. A slight course deviation east of intended flight path occurred before direct to BREVE was entered and LNAV re-engaged. Proceeded on arrival to landing. Loss of LNAV was unexpected; and a small period of time elapsed before we noticed. Better attention in my role of Pilot Monitoring next time.
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.