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Air carrier X non adherence to ATC clearance refused climb clearance misuse of TCASII. Pilot deviation.
| Attributes | |
| ACN | 231979 |
| Time | |
| Date | 199301 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : pmm |
| State Reference | MI |
| Altitude | msl bound lower : 28000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude ground other : taxi |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 1 controller radar : 4 |
| ASRS Report | 231979 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During routine departures off dtw, air carrier X refused a climb clearance because his TCASII showed he was catching air carrier Y 12-15 mi in front, same direction, but on diverging courses. ATC computer showed aircraft were same speed. This is improper use of TCASII. TCASII should be used to avoid imminent sits, not second-guess controller actions. Even if a potential situation existed 12 mi intrail would require a hugh over-take in order for TCASII to become a factor in air safety.
Original NASA ASRS Text
Title: ACR X NON ADHERENCE TO ATC CLRNC REFUSED CLB CLRNC MISUSE OF TCASII. PLTDEV.
Narrative: DURING ROUTINE DEPS OFF DTW, ACR X REFUSED A CLB CLRNC BECAUSE HIS TCASII SHOWED HE WAS CATCHING ACR Y 12-15 MI IN FRONT, SAME DIRECTION, BUT ON DIVERGING COURSES. ATC COMPUTER SHOWED ACFT WERE SAME SPD. THIS IS IMPROPER USE OF TCASII. TCASII SHOULD BE USED TO AVOID IMMINENT SITS, NOT SECOND-GUESS CTLR ACTIONS. EVEN IF A POTENTIAL SIT EXISTED 12 MI INTRAIL WOULD REQUIRE A HUGH OVER-TAKE IN ORDER FOR TCASII TO BECOME A FACTOR IN AIR SAFETY.
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.