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CRJ50 captain experiences a terrain warning during approach due to altimeter being mis set by one inch (30.36 vs 29.36).
| Attributes | |
| ACN | 923371 |
| Time | |
| Date | 201012 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 16000 Flight Crew Type 12000 |
| Events | |
| Anomaly | Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
Major winter storm [was] hitting the midwest (very low altimeters). On descent; I obtained ATIS and wrote down the altimeter as 29.36. We ran the arrival checks and verified the altimeter as 30.36. We never had the occasion to level off until ATC cleared us to 3;000 ft for the approach. The weather was broken and I had ground contact. The ground looked close; I noticed radio altimeter indicated 1;300 ft. It took a moment for this to register (naw; that can't be right). Just as I realized what was going on (wrong altimeter; we had 30.36 set) we got a 'terrain' call from GPWS and shortly thereafter a call from ATC to check our altitude. We climbed; reset altimeters and completed the approach without further incident.our procedures have one pilot copy ATIS and write it down. During the approach checks; we verify the altimeter; but if it is written down wrong or the other pilot does not verify that the copied info is correct; he can easily verify the wrong setting. ACARS would fix this by giving both pilots a data linked ATIS with correct information.
Original NASA ASRS Text
Title: CRJ50 Captain experiences a terrain warning during approach due to altimeter being mis set by one inch (30.36 vs 29.36).
Narrative: Major winter storm [was] hitting the Midwest (very low altimeters). On descent; I obtained ATIS and wrote down the altimeter as 29.36. We ran the ARRIVAL checks and verified the altimeter as 30.36. We never had the occasion to level off until ATC cleared us to 3;000 FT for the approach. The weather was broken and I had ground contact. The ground looked close; I noticed radio altimeter indicated 1;300 FT. It took a moment for this to register (naw; that can't be right). Just as I realized what was going on (wrong altimeter; we had 30.36 set) we got a 'TERRAIN' call from GPWS and shortly thereafter a call from ATC to check our altitude. We climbed; reset altimeters and completed the approach without further incident.Our procedures have one pilot copy ATIS and write it down. During the APPROACH checks; we verify the altimeter; but if it is written down wrong or the other pilot does not verify that the copied info is correct; he can easily VERIFY the wrong setting. ACARS would fix this by giving both pilots a data linked ATIS with correct information.
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.