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On a night time arrival to roa and air carrier aircraft responded to an egpws warning that appeared to have been triggered in error as no obstacles were in the vicinity and ATC advised they had received no alerts.
| Attributes | |
| ACN | 931600 |
| Time | |
| Date | 201102 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ROA.TRACON |
| State Reference | VA |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Boeing Company Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | GPWS |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 150 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 75 Flight Crew Total 8000 Flight Crew Type 400 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Inflight Event / Encounter CFTT / CFIT |
Narrative:
Descending on vector heading to 4;000 as directed by roa approach. Just before level off we got a single 'terrain' alert. We were in a slow descent in flch at 250 KTS. We were IMC at night so I climbed thru 5;000 and had the first officer report out of assigned altitude and that we had responded to a terrain alert. The controller said he had not received any alerts and that we were at the correct MVA for that sector. We descended back down to 4;000 ft and continued via vectors for the ILS to runway 34. Normal approach and landing.my reactions seemed slow and may be attributed to fatigue from the previous 14 days of flying with one 26 hour break. In addition we were late most days this past week getting to the hotel due to winter weather.
Original NASA ASRS Text
Title: On a night time arrival to ROA and air carrier aircraft responded to an EGPWS warning that appeared to have been triggered in error as no obstacles were in the vicinity and ATC advised they had received no alerts.
Narrative: Descending on vector heading to 4;000 as directed by ROA Approach. Just before level off we got a single 'terrain' alert. We were in a slow descent in FLCH at 250 KTS. We were IMC at night so I climbed thru 5;000 and had the First Officer report out of assigned altitude and that we had responded to a terrain alert. The Controller said he had not received any alerts and that we were at the correct MVA for that sector. We descended back down to 4;000 FT and continued via vectors for the ILS to Runway 34. Normal approach and landing.My reactions seemed slow and may be attributed to fatigue from the previous 14 days of flying with one 26 hour break. In addition we were late most days this past week getting to the hotel due to winter weather.
Data retrieved from NASA's ASRS site as of April 2012 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.