An air carrier flew an RNAV GPS approach to mdw runway 22R and had egpws warning at 4;000 ft over th...

Narrative:

The weather at mdw was clear and the winds were out of the southwest at about 6 KTS. Mdw was landing 22L. There was very little traffic at this time of night so we asked to shoot the RNAV GPS 22R approach with a side step to 22L for practice. There were no RNAV 22L approach plates in our commercial charts binders. The first officer was the pilot flying. We were cleared to the IAF and cleared for the RNAV 22R approach. The approach profile had us crossing the FAF at or above 3;000 ft. We were at 4;000 ft over the IAF and slowing plus in a turn toward the FAF. It was about this time we both noticed the approach profile was taking us over downtown chicago close to the sears tower. According to the approach plate; the tower sits at about 2;300 ft. We decided to stop our descent at 3;500 ft until we were clear of the tower. The tower's location is almost exactly where the FAF is located. We were flaps 5 with the gear down and configuring over the FAF. It was at this point we received one verbal obstacle warning from the GPWS terrain avoidance with an indication on the flight director to pull up. We immediately disconnected the autopilot and applied power to go around when the terrain warning went away. The terrain warning went away as fast as it appeared; obviously because we were over the sears tower when it went off. I do not think we climbed more than 200 ft. We continued a visual approach to 22L. We were configured and stabilized well before 1;000 ft with a normal landing on 22L. I do not know of anything that states that we could not have shot this approach. This was a practice RNAV in visual conditions and we were on profile and following procedures. I know now not to shoot this approach again.

Original NASA ASRS Text

Title: An Air Carrier flew an RNAV GPS approach to MDW Runway 22R and had EGPWS warning at 4;000 FT over the FAF which is located on top of the Sears Tower which is 2;300 FT.

Narrative: The weather at MDW was clear and the winds were out of the southwest at about 6 KTS. MDW was landing 22L. There was very little traffic at this time of night so we asked to shoot the RNAV GPS 22R approach with a side step to 22L for practice. There were no RNAV 22L approach plates in our Commercial Charts binders. The First Officer was the pilot flying. We were cleared to the IAF and cleared for the RNAV 22R approach. The approach profile had us crossing the FAF at or above 3;000 FT. We were at 4;000 FT over the IAF and slowing plus in a turn toward the FAF. It was about this time we both noticed the approach profile was taking us over downtown Chicago close to the Sears Tower. According to the approach plate; the Tower sits at about 2;300 FT. We decided to stop our descent at 3;500 FT until we were clear of the Tower. The Tower's location is almost exactly where the FAF is located. We were flaps 5 with the gear down and configuring over the FAF. It was at this point we received one verbal obstacle warning from the GPWS terrain avoidance with an indication on the flight director to pull up. We immediately disconnected the autopilot and applied power to go around when the Terrain warning went away. The Terrain warning went away as fast as it appeared; obviously because we were over the Sears Tower when it went off. I do not think we climbed more than 200 FT. We continued a visual approach to 22L. We were configured and stabilized well before 1;000 FT with a normal landing on 22L. I do not know of anything that states that we could not have shot this approach. This was a practice RNAV in visual conditions and we were on profile and following procedures. I know now not to shoot this approach again.

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.

Attributes
ACN	931736
Time
Date	201102
Local Time Of Day	0001-0600
Place
Locale Reference	MDW.Airport
State Reference	IL
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 303
Person 2
Function	Pilot Flying First Officer
Experience	Flight Crew Last 90 Days 328
Events
Anomaly	Inflight Event / Encounter CFTT / CFIT

An air carrier flew an RNAV GPS approach to mdw runway 22R and had egpws warning at 4;000 ft over the FAF which is located on top of the sears tower which is 2;300 ft.