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A B737 was cleared direct to destination airport but selected direct to an expected ILS waypoint. ATC commented on the aircraft not complying with the issued clearance.
| Attributes | |
| ACN | 793812 |
| Time | |
| Date | 200807 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 269 |
| ASRS Report | 793812 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 286 |
| ASRS Report | 793816 |
| Events | |
| Anomaly | non adherence : company policies non adherence : clearance non adherence : far non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : returned to original clearance |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We were given a clearance direct to ZZZ about 130 NM from the airport. We evaluated the course to the airport versus the course to the abc intersection and the difference was 3-4 degrees. We discussed the choice and decided to go to abc so we would have descent information and be set up for the approach. Just before being handed off to the TRACON; center asked us if we were going direct to ZZZ. I confessed we were going direct to abc. The controller said; 'if you were cleared direct ZZZ that is what we expect you to do.' we then changed the FMC active waypoint to ZZZ. After that conversation; the controller handed us off to the TRACON. TRACON acknowledged our check-in and cleared us direct the next fix inside abc. During debrief with the first officer we discussed the common practice at our airline to do what we had done. Both of us realized going to the OM was not technically correct but we thought it was 'good enough.' in the future I will navigation exactly as cleared and ask for what I want. This is a common practice on the line. Perhaps a note to the troops to return us to compliance would save the next guy from writing this type of report.
Original NASA ASRS Text
Title: A B737 WAS CLRED DIRECT TO DEST ARPT BUT SELECTED DIRECT TO AN EXPECTED ILS WAYPOINT. ATC COMMENTED ON THE ACFT NOT COMPLYING WITH THE ISSUED CLRNC.
Narrative: WE WERE GIVEN A CLRNC DIRECT TO ZZZ ABOUT 130 NM FROM THE ARPT. WE EVALUATED THE COURSE TO THE ARPT VERSUS THE COURSE TO THE ABC INTXN AND THE DIFFERENCE WAS 3-4 DEGS. WE DISCUSSED THE CHOICE AND DECIDED TO GO TO ABC SO WE WOULD HAVE DSCNT INFO AND BE SET UP FOR THE APCH. JUST BEFORE BEING HANDED OFF TO THE TRACON; CTR ASKED US IF WE WERE GOING DIRECT TO ZZZ. I CONFESSED WE WERE GOING DIRECT TO ABC. THE CTLR SAID; 'IF YOU WERE CLRED DIRECT ZZZ THAT IS WHAT WE EXPECT YOU TO DO.' WE THEN CHANGED THE FMC ACTIVE WAYPOINT TO ZZZ. AFTER THAT CONVERSATION; THE CTLR HANDED US OFF TO THE TRACON. TRACON ACKNOWLEDGED OUR CHK-IN AND CLRED US DIRECT THE NEXT FIX INSIDE ABC. DURING DEBRIEF WITH THE FO WE DISCUSSED THE COMMON PRACTICE AT OUR AIRLINE TO DO WHAT WE HAD DONE. BOTH OF US REALIZED GOING TO THE OM WAS NOT TECHNICALLY CORRECT BUT WE THOUGHT IT WAS 'GOOD ENOUGH.' IN THE FUTURE I WILL NAV EXACTLY AS CLRED AND ASK FOR WHAT I WANT. THIS IS A COMMON PRACTICE ON THE LINE. PERHAPS A NOTE TO THE TROOPS TO RETURN US TO COMPLIANCE WOULD SAVE THE NEXT GUY FROM WRITING THIS TYPE OF RPT.
Data retrieved from NASA's ASRS site as of May 2009 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.