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Flight crew miscopy heading assigned with takeoff clearance and turned left to 260 degrees after departure. Received TCASII advisory. Local controller instructs the flight crew to right to 360 degrees. Unknown if TCASII traffic was IFR or VFR or if less than standard separation occurred.
| Attributes | |
| ACN | 372484 |
| Time | |
| Date | 199706 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 10000 flight time type : 4000 |
| ASRS Report | 372848 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 5999 vertical : 800 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight was cleared for takeoff from ord runway 32L. This clearance included a turn clearance which I did not catch. The captain, handling ATC communications (first officer's turn to fly), acknowledged a heading of 260 degrees, set that heading -- tower did not correct us. Normal takeoff, with a left turn to 260 degrees. As we rolled out, tower issued an immediate right turn to 360 degrees. We complied and then noticed on TCASII descending at approximately our 11 O'clock position -- TCASII issued a 'traffic, traffic' advisory, which quickly ended as we turned away. We were then handed off with no further comment from tower. Contributing factors: 1) both pilots busy with allowable tailwind calculations right up until takeoff (wind 080 degrees at 12 KTS, takeoff runway 32L). 2) xfer of aircraft control (captain to first officer) just as takeoff clearance was issued (first officer heard takeoff clearance but missed turn clearance). 3) tower did not correct readback of improper heading. 4) 'wishful hearing': flight was a wbound departure, heading 260 degrees would have put us on course, while 360 degrees was a turn away.
Original NASA ASRS Text
Title: FLC MISCOPY HDG ASSIGNED WITH TKOF CLRNC AND TURNED L TO 260 DEGS AFTER DEP. RECEIVED TCASII ADVISORY. LCL CTLR INSTRUCTS THE FLC TO R TO 360 DEGS. UNKNOWN IF TCASII TFC WAS IFR OR VFR OR IF LTSS OCCURRED.
Narrative: FLT WAS CLRED FOR TKOF FROM ORD RWY 32L. THIS CLRNC INCLUDED A TURN CLRNC WHICH I DID NOT CATCH. THE CAPT, HANDLING ATC COMS (FO'S TURN TO FLY), ACKNOWLEDGED A HDG OF 260 DEGS, SET THAT HDG -- TWR DID NOT CORRECT US. NORMAL TKOF, WITH A L TURN TO 260 DEGS. AS WE ROLLED OUT, TWR ISSUED AN IMMEDIATE R TURN TO 360 DEGS. WE COMPLIED AND THEN NOTICED ON TCASII DSNDING AT APPROX OUR 11 O'CLOCK POS -- TCASII ISSUED A 'TFC, TFC' ADVISORY, WHICH QUICKLY ENDED AS WE TURNED AWAY. WE WERE THEN HANDED OFF WITH NO FURTHER COMMENT FROM TWR. CONTRIBUTING FACTORS: 1) BOTH PLTS BUSY WITH ALLOWABLE TAILWIND CALCULATIONS RIGHT UP UNTIL TKOF (WIND 080 DEGS AT 12 KTS, TKOF RWY 32L). 2) XFER OF ACFT CTL (CAPT TO FO) JUST AS TKOF CLRNC WAS ISSUED (FO HEARD TKOF CLRNC BUT MISSED TURN CLRNC). 3) TWR DID NOT CORRECT READBACK OF IMPROPER HDG. 4) 'WISHFUL HEARING': FLT WAS A WBOUND DEP, HDG 260 DEGS WOULD HAVE PUT US ON COURSE, WHILE 360 DEGS WAS A TURN 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.