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Air carrier captain reported the company's 10-4 chart for the RNAV visual to runway 4 at mhlm is inaccurate and resulted in an unnecessary egpws alert.
| Attributes | |
| ACN | 1523317 |
| Time | |
| Date | 201803 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | MHLM.Airport |
| State Reference | FO |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Electronic Flt Bag (EFB) |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
RNAV visual runway 04 approach; 'caution terrain' egpws warning triggered halfway through turn after SAP11 fix. Flaps 2 and speed 190 as per approach. Enhanced GPWS corresponding yellow. Aircraft on autopilot with green 'final app' and aircraft on path on course in visual conditions with 20 mile visibility. Disengaged autopilot and flew to landing.10-4 does note RNAV 04V for 'visual guidance' however the approach as built should not be triggering terrain warnings or 10-4 pages should note possible warnings. Approach is inaccurate.
Original NASA ASRS Text
Title: Air carrier Captain reported the company's 10-4 chart for the RNAV visual to Runway 4 at MHLM is inaccurate and resulted in an unnecessary EGPWS alert.
Narrative: RNAV Visual Runway 04 approach; 'Caution Terrain' EGPWS warning triggered halfway through turn after SAP11 fix. Flaps 2 and speed 190 as per approach. Enhanced GPWS corresponding yellow. Aircraft on autopilot with green 'FINAL APP' and aircraft on path on course in visual conditions with 20 mile visibility. Disengaged autopilot and flew to landing.10-4 does note RNAV 04V for 'visual guidance' however the approach as built should not be triggering terrain warnings or 10-4 pages should note possible warnings. Approach is inaccurate.
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.