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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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MD80S aircraft while on vectors and altitude changes had TCASII RA. Reporter captain followed RA and evaded intruder. Approach controller blames frequency congestion.
| Attributes | |
| ACN | 373580 |
| Time | |
| Date | 199707 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : elp |
| State Reference | TX |
| Altitude | msl bound lower : 11500 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : elp tower : lga |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other descent other |
| Route In Use | enroute : on vectors enroute airway : elp |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 373580 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 15000 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
In descent with elp approach, we were given numerous heading and altitude changes for conflicting traffic. Were given altitude of 12000 ft and a heading change for VFR traffic in 12 O'clock position. We still received an RA and ended up descending to about 11500 ft for avoidance. Approach indicated they were having a hard time with frequency congestion. In fact we had complained about the poor quality of their transmitter and had received a change to another frequency to see if that helped. We believe we came no closer than 300 ft and 3+ mi to the VFR target.
Original NASA ASRS Text
Title: MD80S ACFT WHILE ON VECTORS AND ALT CHANGES HAD TCASII RA. RPTR CAPT FOLLOWED RA AND EVADED INTRUDER. APCH CTLR BLAMES FREQ CONGESTION.
Narrative: IN DSCNT WITH ELP APCH, WE WERE GIVEN NUMEROUS HDG AND ALT CHANGES FOR CONFLICTING TFC. WERE GIVEN ALT OF 12000 FT AND A HDG CHANGE FOR VFR TFC IN 12 O'CLOCK POS. WE STILL RECEIVED AN RA AND ENDED UP DSNDING TO ABOUT 11500 FT FOR AVOIDANCE. APCH INDICATED THEY WERE HAVING A HARD TIME WITH FREQ CONGESTION. IN FACT WE HAD COMPLAINED ABOUT THE POOR QUALITY OF THEIR XMITTER AND HAD RECEIVED A CHANGE TO ANOTHER FREQ TO SEE IF THAT HELPED. WE BELIEVE WE CAME NO CLOSER THAN 300 FT AND 3+ MI TO THE VFR TARGET.
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.