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An embraer 145 flight crew reported that they received a 'terrain-terrain pull up; pull up' warning during climb while following ATC instructions.
| Attributes | |
| ACN | 1497625 |
| Time | |
| Date | 201711 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | ATC Issue All Types Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
Took off from [the airport] assigned runway heading and 5000 feet; shortly after tower gave us 2 left hand turns. After which we were advised to contact departure and were subsequently given a 090 heading and to maintain 5000 approximately 8 DME from the VOR. About a minute later while level at 5;000; we got a GPWS 'caution terrain; caution terrain;' and right after 'terrain; terrain; pull up; pull up.' at that moment; I complied with the GPWS warning and initiated the GPWS escape maneuver. At about 6;000 feet; the alert went away and we advised ATC of the situation and let them know that we would level off at 7;000. ATC advised of traffic at 8;000 but still in IMC; then followed by an ATC instructions to turn right to 180 and climb to 15;000. After which the flight proceeded normally and upon arrival wrote up the event in the aml.during this event; the grid mora (minimum off route altitude) on the navigation chart was 3;500. The cause [of the GPWS may have been] a possible radio altimeter malfunction or actual terrain. [I am] still trying to understand the underlying cause.
Original NASA ASRS Text
Title: An Embraer 145 Flight Crew reported that they received a 'Terrain-Terrain Pull up; Pull up' warning during climb while following ATC instructions.
Narrative: Took off from [the Airport] assigned runway heading and 5000 feet; shortly after tower gave us 2 left hand turns. After which we were advised to contact Departure and were subsequently given a 090 heading and to maintain 5000 approximately 8 DME from the VOR. About a minute later while level at 5;000; we got a GPWS 'caution terrain; caution terrain;' and right after 'Terrain; terrain; pull up; pull up.' At that moment; I complied with the GPWS warning and initiated the GPWS escape maneuver. At about 6;000 feet; the alert went away and we advised ATC of the situation and let them know that we would level off at 7;000. ATC advised of traffic at 8;000 but still in IMC; then followed by an ATC instructions to turn right to 180 and climb to 15;000. After which the flight proceeded normally and upon arrival wrote up the event in the AML.During this event; the grid MORA (Minimum Off Route Altitude) on the navigation chart was 3;500. The cause [of the GPWS may have been] a Possible Radio Altimeter malfunction or actual terrain. [I am] still trying to understand the underlying cause.
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.