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Crj first officer reported receiving an unexplained egpws warning on an instrument approach that resulted in an evasive maneuver.
| Attributes | |
| ACN | 1690527 |
| Time | |
| Date | 201910 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | MDT.Airport |
| State Reference | PA |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy |
Narrative:
Unsure of what the cause was. The controller said that 3;000 ft. Was the minimum vectoring altitude at that point. After being told to proceed direct to har VOR from center; unsure of which center; was then handed off to harrisburg approach. We were told to descend to 3;000 ft.; and then handed off to harrisburg tower controllers. Passing over the har VOR at 3;000 ft. Per ATC instructions we were cleared for the straight in ILS 13 approach from tower. That is when we received an egpws terrain warning alarm. I was the pilot flying at the time and executed the terrain avoidance procedure. Reaching 3;600 ft. The warning stopped and the tower controller asked about the sudden change in altitude. We leveled off picked up on the glideslope and continued to land without incident. The captain asked for the number to the tower and called when we landed to see why it occurred. The tower controller had apparently had already been relieved from her shift at that point. This approach should be reviewed by the FAA to ensure that the terps minima is still active near the har VOR. The minimum safe altitude is 3;400 ft. And aircraft are being sent below the MSA by the controllers.
Original NASA ASRS Text
Title: CRJ First Officer reported receiving an unexplained EGPWS warning on an instrument approach that resulted in an evasive maneuver.
Narrative: Unsure of what the cause was. The Controller said that 3;000 ft. was the minimum vectoring altitude at that point. After being told to proceed direct to HAR VOR from Center; unsure of which Center; was then handed off to Harrisburg Approach. We were told to descend to 3;000 ft.; and then handed off to Harrisburg Tower controllers. Passing over the HAR VOR at 3;000 ft. per ATC instructions we were cleared for the straight in ILS 13 approach from Tower. That is when we received an EGPWS terrain warning alarm. I was the Pilot Flying at the time and executed the terrain avoidance procedure. Reaching 3;600 ft. the warning stopped and the Tower controller asked about the sudden change in altitude. We leveled off picked up on the glideslope and continued to land without incident. The Captain asked for the number to the Tower and called when we landed to see why it occurred. The Tower controller had apparently had already been relieved from her shift at that point. This approach should be reviewed by the FAA to ensure that the TERPS minima is still active near the HAR VOR. The Minimum Safe Altitude is 3;400 ft. and aircraft are being sent below the MSA by the controllers.
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.