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Flight crew of air carrier aircraft took no action during an ILS approach when hearing a TCASII warning while in IMC.
| Attributes | |
| ACN | 256171 |
| Time | |
| Date | 199311 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 18000 flight time type : 2000 |
| ASRS Report | 256171 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | none taken : anomaly accepted other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | unspecified : 30000 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
While on approach coming up on zingg intersection on dfw 17L ILS, TCASII, without prior warning, 'climb, climb.' indicator put green arc at 2000 FPM, red below '0' roc leveled off at 5000 ft. Told tower TCASII gave no signal at end 'clear of conflict.' suspect bad TCASII as approach said no traffic on radar. Later after calling approach on phone, he said an air carrier large transport 2 planes behind us also got an RA to climb and did so. Still approach could not see any traffic except a plane on base going into love field, which aimed it at us about 5 mi away.
Original NASA ASRS Text
Title: FLC OF ACR ACFT TOOK NO ACTION DURING AN ILS APCH WHEN HEARING A TCASII WARNING WHILE IN IMC.
Narrative: WHILE ON APCH COMING UP ON ZINGG INTXN ON DFW 17L ILS, TCASII, WITHOUT PRIOR WARNING, 'CLB, CLB.' INDICATOR PUT GREEN ARC AT 2000 FPM, RED BELOW '0' ROC LEVELED OFF AT 5000 FT. TOLD TWR TCASII GAVE NO SIGNAL AT END 'CLR OF CONFLICT.' SUSPECT BAD TCASII AS APCH SAID NO TFC ON RADAR. LATER AFTER CALLING APCH ON PHONE, HE SAID AN ACR LGT 2 PLANES BEHIND US ALSO GOT AN RA TO CLB AND DID SO. STILL APCH COULD NOT SEE ANY TFC EXCEPT A PLANE ON BASE GOING INTO LOVE FIELD, WHICH AIMED IT AT US ABOUT 5 MI AWAY.
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.