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Descending through 35000 MSL flight crew of medium large transport was cleared direct to ctw at FL330. Captain started turn immediately until corrected by first officer.
| Attributes | |
| ACN | 199096 |
| Time | |
| Date | 199201 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ctw |
| State Reference | OH |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 260 flight time total : 13000 flight time type : 500 |
| ASRS Report | 199096 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 4000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cruising at 37000 ft and on direct course to new comberstown VOR. We were given a descent to 33000 with a heading of 110 degree at 36000 ft (we were slow descending at 1000 FPM on capture mode of FMC). The controller gave us a clearance to head directly to new comberstown VOR at 33000. I think the captain misread the instructions and turned directly to new comberstown VOR. I admit I was occupied and assumed he understood the clearance. At about 35000 a TCASII clearance of 'traffic' came on. At the same time, I realized the problem and set the heading bug on 110 degree (about a 20 degree turn) and hit heading select. The controller asked about our heading and I replied we were on a '110 heading.' the controller answered and we continued descent to 33000. Then turned direct to new comberstown VOR. The controller mentioned the other aircraft and we acknowledged it in sight. No further action was taken or required.
Original NASA ASRS Text
Title: DSNDING THROUGH 35000 MSL FLC OF MLG WAS CLRED DIRECT TO CTW AT FL330. CAPT STARTED TURN IMMEDIATELY UNTIL CORRECTED BY FO.
Narrative: WE WERE CRUISING AT 37000 FT AND ON DIRECT COURSE TO NEW COMBERSTOWN VOR. WE WERE GIVEN A DSCNT TO 33000 WITH A HDG OF 110 DEG AT 36000 FT (WE WERE SLOW DSNDING AT 1000 FPM ON CAPTURE MODE OF FMC). THE CTLR GAVE US A CLRNC TO HEAD DIRECTLY TO NEW COMBERSTOWN VOR AT 33000. I THINK THE CAPT MISREAD THE INSTRUCTIONS AND TURNED DIRECTLY TO NEW COMBERSTOWN VOR. I ADMIT I WAS OCCUPIED AND ASSUMED HE UNDERSTOOD THE CLRNC. AT ABOUT 35000 A TCASII CLRNC OF 'TFC' CAME ON. AT THE SAME TIME, I REALIZED THE PROBLEM AND SET THE HDG BUG ON 110 DEG (ABOUT A 20 DEG TURN) AND HIT HDG SELECT. THE CTLR ASKED ABOUT OUR HDG AND I REPLIED WE WERE ON A '110 HDG.' THE CTLR ANSWERED AND WE CONTINUED DSCNT TO 33000. THEN TURNED DIRECT TO NEW COMBERSTOWN VOR. THE CTLR MENTIONED THE OTHER ACFT AND WE ACKNOWLEDGED IT IN SIGHT. NO FURTHER ACTION WAS TAKEN OR REQUIRED.
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.