|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Locale Reference||airport : ara.airport|
|Altitude||msl single value : 4000|
|Controlling Facilities||tracon : i90.tracon|
|Make Model Name||Any Unknown or Unlisted Aircraft Manufacturer|
|Navigation In Use||ils localizer & glide slope : 34|
|Flight Phase||descent : approach|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Function||flight crew : first officer|
|Anomaly||conflict : airborne less severe|
inflight encounter other
|Independent Detector||other flight crewa|
other flight crewb
|Resolutory Action||flight crew : took precautionary avoidance action|
|Problem Areas||Flight Crew Human Performance|
ATC Human Performance
We received an egpws warning due to an unobserved obstruction. Approach control was vectoring us for an ILS runway 34. At 3000 ft radar contact was lost. We climbed to 4000 ft but still no radar contact from approach control. We were on an extended downwind to the runway. An egpws caution for obstruction occurred followed by the warning 'pull up.' I climbed and turned right and notified ATC. There was a tethered balloon station within 1/2 to 1 mi at 12 O'clock position. Obstacle caution followed by a pull-up warning. Climbed and turned. Question ATC about obstructions when radar contact is lost.
Original NASA ASRS Text
Title: FLT CREW RECEIVES EGPWS DURING VECTORS FOR APCH TO ARA.
Narrative: WE RECEIVED AN EGPWS WARNING DUE TO AN UNOBSERVED OBSTRUCTION. APCH CTL WAS VECTORING US FOR AN ILS RWY 34. AT 3000 FT RADAR CONTACT WAS LOST. WE CLBED TO 4000 FT BUT STILL NO RADAR CONTACT FROM APCH CTL. WE WERE ON AN EXTENDED DOWNWIND TO THE RWY. AN EGPWS CAUTION FOR OBSTRUCTION OCCURRED FOLLOWED BY THE WARNING 'PULL UP.' I CLBED AND TURNED R AND NOTIFIED ATC. THERE WAS A TETHERED BALLOON STATION WITHIN 1/2 TO 1 MI AT 12 O'CLOCK POS. OBSTACLE CAUTION FOLLOWED BY A PULL-UP WARNING. CLBED AND TURNED. QUESTION ATC ABOUT OBSTRUCTIONS WHEN RADAR CONTACT IS LOST.
Data retrieved from NASA's ASRS site as of January 2009 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.