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Flight crew in DC9 40 mi southwest of iah descending received TCASII RA requiring an immediate climb. Near midair collision.
| Attributes | |
| ACN | 409543 |
| Time | |
| Date | 199807 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : iah |
| State Reference | TX |
| Altitude | msl bound lower : 10500 msl bound upper : 11500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 20000 flight time type : 8000 |
| ASRS Report | 409543 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Passing 10500 ft in the descent to 10000 ft for crossing gland intersection, we received a TCASII TA followed rapidly by an RA (climb at 3500 FPM) required, we pitched up and added power and climbed to about 11500 ft before TCASII advised clear of conflict. TRACON advised traffic was VFR and not in radio contact. First officer was monitoring TCASII display and said if we hadn't acted immediately, we would have hit whatever it was.
Original NASA ASRS Text
Title: FLC IN DC9 40 MI SW OF IAH DSNDING RECEIVED TCASII RA REQUIRING AN IMMEDIATE CLB. NMAC.
Narrative: PASSING 10500 FT IN THE DSCNT TO 10000 FT FOR XING GLAND INTXN, WE RECEIVED A TCASII TA FOLLOWED RAPIDLY BY AN RA (CLB AT 3500 FPM) REQUIRED, WE PITCHED UP AND ADDED PWR AND CLBED TO ABOUT 11500 FT BEFORE TCASII ADVISED CLR OF CONFLICT. TRACON ADVISED TFC WAS VFR AND NOT IN RADIO CONTACT. FO WAS MONITORING TCASII DISPLAY AND SAID IF WE HADN'T ACTED IMMEDIATELY, WE WOULD HAVE HIT WHATEVER IT WAS.
Data retrieved from NASA's ASRS site as of July 2007 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.