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A crj-700 flight crew responded to an egpws warning while shooting a visual approach to runway 17R at okc without benefit of a tuned and identified IAP for altitude reference.
| Attributes | |
| ACN | 937390 |
| Time | |
| Date | 201103 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | OKC.TRACON |
| State Reference | OK |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Inflight Event / Encounter CFTT / CFIT |
Narrative:
On a ferry flight to okc I was pilot monitoring and the first officer was pilot flying. We planned a visual approach to runway 17R. We were cleared for a visual approach to runway 17R and the pilot flying began a slow descent. Downtown oklahoma city was in sight and its proximity was discussed however we did receive a GPWS warning while passing over the buildings. Action was taken; however the warning was short lived. There may have been a lack of separation between us and the buildings under the cfrs.the event occurred due to a lack of research on the approach plates and relying solely on visual reference and terrain mapping. I noticed the terrain map had an altitude of 2;200 ft as it's high point and I just assumed that it would give us a 1;000 ft buffer when in fact that is closer to 500 ft. I also pointed out the proximity of the city multiple times but was not assertive enough to get a reaction from the first officer.
Original NASA ASRS Text
Title: A CRJ-700 flight crew responded to an EGPWS warning while shooting a visual approach to Runway 17R at OKC without benefit of a tuned and identified IAP for altitude reference.
Narrative: On a ferry flight to OKC I was pilot monitoring and the First Officer was pilot flying. We planned a visual approach to Runway 17R. We were cleared for a visual approach to Runway 17R and the pilot flying began a slow descent. Downtown Oklahoma City was in sight and its proximity was discussed however we did receive a GPWS warning while passing over the buildings. Action was taken; however the warning was short lived. There may have been a lack of separation between us and the buildings under the CFRs.The event occurred due to a lack of research on the approach plates and relying solely on visual reference and terrain mapping. I noticed the terrain map had an altitude of 2;200 FT as it's high point and I just assumed that it would give us a 1;000 FT buffer when in fact that is closer to 500 FT. I also pointed out the proximity of the city multiple times but was not assertive enough to get a reaction from the First Officer.
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.