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Air carrier flight crew reported a track deviation and GPWS terrain warning occurred on the approach to MMMZ runway 26.
| Attributes | |
| ACN | 1600356 |
| Time | |
| Date | 201812 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | MMMZ.Airport |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types Inflight Event / Encounter CFTT / CFIT |
Narrative:
Arrival in mazatlan in VMC conditions. ASOS was reporting VOR DME 1 runway 26 in use; mzt approach assigned VOR DME 2 runway 26. Non-flying pilot entered ILS localizer DME 2 runway 26 into the FMS. The FMS was improperly sequenced [and] I flew through the DME arc intercept and aircraft continued directly to mzt. I realized I missed the intercept so I [disconnected] the autopilot and started a turn to the left. [We were in] VMC conditions; I called the field in sight and ATC issued a clearance to land. After turning left to fly towards the runway 26 centerline; [we] received a GPWS terrain alert for a hill that was left or our course to the runway 26 final. Being cautious of the terrain alert and maintain visual reference to the hill; I overshot final slightly; re-established and landed normally on runway 26. I believe a contributing factor was a late clearance to descend from cruise altitude. When the autopilot did not turn onto the DME arc; I should have called missed approach.
Original NASA ASRS Text
Title: Air carrier flight crew reported a track deviation and GPWS terrain warning occurred on the approach to MMMZ Runway 26.
Narrative: Arrival in Mazatlan in VMC conditions. ASOS was reporting VOR DME 1 RWY 26 in use; MZT Approach assigned VOR DME 2 RWY 26. Non-flying pilot entered ILS LOC DME 2 RWY 26 into the FMS. The FMS was improperly sequenced [and] I flew through the DME ARC intercept and aircraft continued directly to MZT. I realized I missed the intercept so I [disconnected] the autopilot and started a turn to the left. [We were in] VMC conditions; I called the field in sight and ATC issued a clearance to land. After turning left to fly towards the RWY 26 centerline; [we] received a GPWS terrain alert for a hill that was left or our course to the RWY 26 final. Being cautious of the terrain alert and maintain visual reference to the hill; I overshot final slightly; re-established and landed normally on RWY 26. I believe a contributing factor was a late clearance to descend from cruise altitude. When the autopilot did not turn onto the DME ARC; I should have called missed approach.
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.