 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Medium large transport given descent clearance to FL240 with time limitation for leaving FL280. Aircraft made that restriction and was given turn and further descent for traffic that was given at 3 O'clock position. Controller training in progress.
| Attributes | |
| ACN | 88219 |
| Time | |
| Date | 198805 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pxv |
| State Reference | IN |
| Altitude | msl bound lower : 26300 msl bound upper : 27100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid tower : frg |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute airway : zid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 24900 flight time type : 12000 |
| ASRS Report | 88129 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 27000 vertical : 750 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
In contact with ZID center and cleared to descend to FL240. Needed to be out of FL280 in 1 1/2-2 mins. We made the descent through FL280 on schedule then reduced rate of descent. At about 26300' center requested our altitude and advised to turn to 360 degrees immediately and needed us out of FL250 in 10 seconds. A company flight on same frequency was advised to turn to 180 degrees (and a climb clearance, I think). We got out of FL250 as quickly as humanly possible and I asked where the traffic was. The response was 2-3 O'clock with a range. We looked and saw a company large transport Y above us and probably 3-5 mi away. When we were given the turn to 360 degrees, a second controller's voice took over the communications. I don't think there was ever any possibility of a near miss, but it sounded like a trnee and supervisor situation. We were then cleared direct fwa VOR and turned over to chicago center.
Original NASA ASRS Text
Title: MLG GIVEN DESCENT CLRNC TO FL240 WITH TIME LIMITATION FOR LEAVING FL280. ACFT MADE THAT RESTRICTION AND WAS GIVEN TURN AND FURTHER DESCENT FOR TRAFFIC THAT WAS GIVEN AT 3 O'CLOCK POSITION. CTLR TRAINING IN PROGRESS.
Narrative: IN CONTACT WITH ZID CENTER AND CLRED TO DSND TO FL240. NEEDED TO BE OUT OF FL280 IN 1 1/2-2 MINS. WE MADE THE DSCNT THROUGH FL280 ON SCHEDULE THEN REDUCED RATE OF DSCNT. AT ABOUT 26300' CENTER REQUESTED OUR ALT AND ADVISED TO TURN TO 360 DEGS IMMEDIATELY AND NEEDED US OUT OF FL250 IN 10 SECS. A COMPANY FLT ON SAME FREQ WAS ADVISED TO TURN TO 180 DEGS (AND A CLB CLRNC, I THINK). WE GOT OUT OF FL250 AS QUICKLY AS HUMANLY POSSIBLE AND I ASKED WHERE THE TFC WAS. THE RESPONSE WAS 2-3 O'CLOCK WITH A RANGE. WE LOOKED AND SAW A COMPANY LGT Y ABOVE US AND PROBABLY 3-5 MI AWAY. WHEN WE WERE GIVEN THE TURN TO 360 DEGS, A SECOND CTLR'S VOICE TOOK OVER THE COMS. I DON'T THINK THERE WAS EVER ANY POSSIBILITY OF A NEAR MISS, BUT IT SOUNDED LIKE A TRNEE AND SUPVR SITUATION. WE WERE THEN CLRED DIRECT FWA VOR AND TURNED OVER TO CHICAGO CENTER.
Data retrieved from NASA's ASRS site as of August 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.