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Light transport transport taking off canadian airport failed to activate proper code in mode C transpoder. Controller had primary target only, considered the target a VFR--conflict one half mile with medium large transport.
| Attributes | |
| ACN | 109914 |
| Time | |
| Date | 198904 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : yeg |
| State Reference | AB |
| Altitude | msl bound lower : 13000 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : yeg tower : hwd |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 165 flight time total : 9500 flight time type : 3000 |
| ASRS Report | 109914 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : far other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Captain completed customs and company formalities with ramp agent outside of aircraft. First officer obtained ATC clearance while captain was attending to company matters. First officer read back and wrote down clearance correctly first officer failed to enter transponder code. Flight taxied out and was instructed to contact departure when airborne. After takeoff departure was contacted and advised aircraft was 'idented.' flight was instructed to 'maintain runway heading, climb to FL250 upon passing 13000'.' captain heard another aircraft instructed to make, 'immediate turn to 010 degrees by approach controller. Captain increased visibility scan and observed an medium large transport pass down left side within 1/2 mi. Subsequent discussing with approach revealed our flight was a primary target only as computer couldn't tag flight due to different transponder code. First officer could offer no explanation as to why he read back code but did not set it in. Approach controller admitted forgetting about our flight as he dismissed us as a VFR target. Company commenced action to monitor first officer's action as regards personal performance.
Original NASA ASRS Text
Title: LTT TRANSPORT TAKING OFF CANADIAN ARPT FAILED TO ACTIVATE PROPER CODE IN MODE C TRANSPODER. CTLR HAD PRIMARY TARGET ONLY, CONSIDERED THE TARGET A VFR--CONFLICT ONE HALF MILE WITH MLG.
Narrative: CAPT COMPLETED CUSTOMS AND COMPANY FORMALITIES WITH RAMP AGENT OUTSIDE OF ACFT. F/O OBTAINED ATC CLRNC WHILE CAPT WAS ATTENDING TO COMPANY MATTERS. F/O READ BACK AND WROTE DOWN CLRNC CORRECTLY F/O FAILED TO ENTER XPONDER CODE. FLT TAXIED OUT AND WAS INSTRUCTED TO CONTACT DEP WHEN AIRBORNE. AFTER TKOF DEP WAS CONTACTED AND ADVISED ACFT WAS 'IDENTED.' FLT WAS INSTRUCTED TO 'MAINTAIN RWY HDG, CLB TO FL250 UPON PASSING 13000'.' CAPT HEARD ANOTHER ACFT INSTRUCTED TO MAKE, 'IMMEDIATE TURN TO 010 DEGS BY APCH CTLR. CAPT INCREASED VIS SCAN AND OBSERVED AN MLG PASS DOWN LEFT SIDE WITHIN 1/2 MI. SUBSEQUENT DISCUSSING WITH APCH REVEALED OUR FLT WAS A PRIMARY TARGET ONLY AS COMPUTER COULDN'T TAG FLT DUE TO DIFFERENT XPONDER CODE. F/O COULD OFFER NO EXPLANATION AS TO WHY HE READ BACK CODE BUT DID NOT SET IT IN. APCH CTLR ADMITTED FORGETTING ABOUT OUR FLT AS HE DISMISSED US AS A VFR TARGET. COMPANY COMMENCED ACTION TO MONITOR F/O'S ACTION AS REGARDS PERSONAL PERFORMANCE.
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.